{"id":8806,"date":"2019-07-18T21:19:16","date_gmt":"2019-07-19T05:19:16","guid":{"rendered":"http:\/\/earthjay.com\/?p=8806"},"modified":"2019-07-18T21:19:16","modified_gmt":"2019-07-19T05:19:16","slug":"earthquake-report-ridgecrest-update-2","status":"publish","type":"post","link":"https:\/\/earthjay.com\/?p=8806","title":{"rendered":"Earthquake Report: Ridgecrest Update #2"},"content":{"rendered":"<ul>\n<li><strong>Summary of Reports for the Ridgecrest Earthquake Sequence<\/strong><\/li>\n<ul>\nThe <a href=\"http:\/\/earthjay.com\/?p=8656\" rel=\"noopener noreferrer\" target=\"_blank\">original Earthquake Report for this widely felt sequence is here<\/a>.<br \/>\nThe <a href=\"http:\/\/earthjay.com\/?p=8706\" rel=\"noopener noreferrer\" target=\"_blank\">update #1 Earthquake Report for this widely felt sequence is here<\/a>.<br \/>\nThe <a href=\"http:\/\/earthjay.com\/?p=8806\" rel=\"noopener noreferrer\" target=\"_blank\">update #2 Earthquake Report for this widely felt sequence is here<\/a>.<br \/>\nThe <a href=\"http:\/\/earthjay.com\/?p=8850\" rel=\"noopener noreferrer\" target=\"_blank\">update #3 Earthquake Report for this widely felt sequence is here<\/a>.\n<\/ul>\n<\/ul>\n<p>Well Well Well<br \/>\nHere is a commercial from Sony for Sony Discman following the 1995-96 Ridgecrest Earthquake (from which we have usurped this name for this July 2019 sequence).<br \/>\n<iframe loading=\"lazy\" width=\"520\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/8k8f2gJjXkQ\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><br \/>\nThe story continues to unfold.<\/p>\n<ul>\n<li>Here is a graphic from the USGS that summarizes our observations as of 16 July.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/California-earthquake-july-16-2019-final_1.png\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/California-earthquake-july-16-2019-final_1.png\" width=\"100%\" alt=\"\" \/><\/a>\n<\/ul>\n<ul>\n<li>The The <a href=\"http:\/\/www.geerassociation.org\/component\/geer_reports\/?view=geerreports&#038;id=91&#038;layout=build\" rel=\"noopener noreferrer\" target=\"_blank\">Geotechnical Extreme Events Reconnaissance (GEER) Association report for the Ridgecrest Earthquake Sequence is now onlin<\/a>e.<\/li>\n<\/ul>\n<h2><font color=orange><strong>Field Work Narrative<\/strong><\/font><\/h2>\n<p>Last week I was lucky enough to spend a week in the field with my coworkers (California Geological Survey) and colleagues (U.S. Geological Survey) making observations of surface rupture from the Ridgecrest Earthquake Sequence (RES). It was initially termed the Searles Valley Earthquake Sequence, but we have since changed the name. Just check out <a href=\"https:\/\/twitter.com\/search?q=%23RidgecrestEarthquake&#038;src=tyah\" rel=\"noopener noreferrer\" target=\"_blank\">#RidgecrestEarthquake<\/a> on social media. Our work will be presented in several publications in the coming future. Stay tuned.<br \/>\nMany of us were granted rare access to the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Naval_Air_Weapons_Station_China_Lake\" rel=\"noopener noreferrer\" target=\"_blank\">Naval Air Weapons Station China Lake<\/a>. This emergency earthquake response effort was an unprecedented collaborative effort between the Navy, the CGS, and the USGS. We worked together as a team and accomplished our mission goals with due diligence. The CGS\/USGS team is out in the field again this week, working off base. We plan to continue doing additional field work for weeks to come. (Though I need to get back to my tsunami stuff as we have deadlines to prepare new tsunami hazard products in the next few weeks to months.)<br \/>\nThese collaborative efforts were based on a mutual respect between team agencies and team members. The field team members all appreciated the very special access we were granted. The commanding officer, Captain Paul Dale, is very supportive of scientific research and his support of our mission was evidence of this.<br \/>\nWe were granted permission to take photos of the geologic evidence of the earthquake and ground shaking. We reviewed our images with the Public Affairs Officer to ensure that we did not take photos of any facilities or equipment that was on the base. This was important and we were very careful about this. We even double checked the images after we got back from the field.<br \/>\nI will add some photos to this page tomorrow.<\/p>\n<h2><font color=orange><strong>Remote Sensing Narrative<\/strong><\/font><\/h2>\n<p>There has also been a large number of Earth scientists using remote sensing data to evaluate the RES. These data are primarily from satellite images of different types (spectral imagery (another word for what we used to call air photos), RADAR, Global Positioning Systems (GPS), seismometer observations, etc.).<br \/>\nFor most of these methods, pre-earthquake data are compared with post-earthquake data for a comparison. The methods used for these comparisons is advancing at a lightning pace. Every year, these models get better and better.<br \/>\nThese remote sensing methods allow us to infer how the ground moved and slipped during and after the earthquake. We can get estimates of the slip on the fault from this type of analysis.<br \/>\nCombining different sources of remote sensing data also allows us to make estimates of the faults, where they moved, and how much they moved (in the subsurface).<br \/>\nI will present some of these observations below.<\/p>\n<h2><font color=orange><strong>USGS Data Products<\/strong><\/font><\/h2>\n<p>I prepared some interpretive posters for the M 7.1 earthquake shortly after it happened. The USGS earthquake pages are a source of great information as evidenced by how hard they are hit by web visitors following events as significant as the M 7.1. The website was unusable for periods of time. This demonstrates that the USGS is doing something right.<br \/>\nLast weekend, I spent Saturday preparing the same types of interpretive posters that <a href=\"http:\/\/earthjay.com\/?p=8706\" rel=\"noopener noreferrer\" target=\"_blank\">I presented here<\/a>, but as comparisons between the M 6.4 and M 7.1 temblors.<\/p>\n<ul>\n<li>Here is an updated seismicity map. There are two main types of earthquakes on this map. I present this map both with aerial imagery and with a topographic (&#8220;hillshade&#8221;) basemap. I outline the general area of Ridgecrest in purple.<\/li>\n<ol>\n<li>First, there are an abundance of aftershocks aligned with the two main faults that ruptured during this sequence (the northwest trending M 7.1 fault and the northeast trending M 6.4 fault). Part of the northwest striking fault ruptured during the M 6.4 event.<\/li>\n<li>Second, there are several areas that show earthquakes that were triggered by this sequence. There are some triggered earthquakes along the Coso Range (where the Coso Geothermal Field is located), some events along the Garlock fault, and some temblors along the Ash Hill fault (in Panamint Valley, to the north of Searles Valley).<\/li>\n<\/ol>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_interpretation_update_shade_20190718.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_interpretation_update_shade_20190718.jpg\" width=\"100%\" alt=\"\" \/><\/a><br \/>\n<a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_interpretation_update_imagery_20190718.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_interpretation_update_imagery_20190718.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>This is a seismicity comparison for the two earthquakes. on the left are earthquakes (USGS) from prior to the M 7.1 earthquake and on the right are quakes after and including the M 7.1 temblor. I plot the USGS Quaternary fault and fold database on the left as black lines.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_earthquake_comparison_20190718.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_earthquake_comparison_20190718.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Here is a map with landslide probability on it. Please head over to <a href=\"http:\/\/earthjay.com\/?p=8656\" rel=\"noopener noreferrer\" target=\"_blank\">that report<\/a> for more information about the USGS Ground Failure products (landslides and liquefaction). Basically, earthquakes shake the ground and this ground shaking can cause landslides. We can see that there is a low probability for landslides. However, we have already seen photographic evidence for landslides and the lower limit for earthquake triggered landslides is magnitude M 5.5 (from Keefer 1984-ish).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_landslide_comparison_20190713.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_landslide_comparison_20190713.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Here is a map showing liquefaction susceptibility. I explain more about this type of map in my <a href=\"http:\/\/earthjay.com\/?p=8656\" rel=\"noopener noreferrer\" target=\"_blank\">original report for the M 6.4 earthquake<\/a>. Scroll down a bit to find the landslide and liquefaction maps for that event.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_liquefaction_comparison_20190713.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_liquefaction_comparison_20190713.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Finally, here is a map that shows the shaking intensity for the M 6.4 and M 7.1 earthquakes. As I mention in my original report, this is based on a model that relates earthquake shaking intensity with earthquake magnitude and distance from the earthquake. Note that there was violent shaking from the M 7.1 event (MMI IX).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_MMI_comparison_20190713.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190704_20170705_MMI_comparison_20190713.jpg\" width=\"100%\" alt=\"\" \/><\/a>\n<\/ul>\n<h2><font color=orange><strong>NASA JPL ARIA Data Products<\/strong><\/font><\/h2>\n<ul>\n<li>NASA Jet Propulsion Laboratory (JPL) prepares Advanced Rapid Imaging and Analysis (ARIA) data products for major events worldwide. Their <a href=\"https:\/\/aria-share.jpl.nasa.gov\/\" rel=\"noopener noreferrer\" target=\"_blank\">data are presented online here<\/a>. I used the data from this event in a GIS computer program, but the data are prepared in Google Earth files too (so everyone can use them if they have a modern computer with an internet connection). This is a valuable government service.<\/li>\n<li>This first map shows the results of modeling Synthetic Aperture Radar Interferometry data. Basically, Radar satellite imagery data from before and from after the earthquake are compared to model the amount of ground deformation that occurred between the satellite acquisitions. Each color band represents a certain amount of motion. This is referred to as the wrapped image.<\/li>\n<li>Here are a series of sources of background information about InSAR analysis.<\/li>\n<ul>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Interferometric_synthetic-aperture_radar\" rel=\"noopener noreferrer\" target=\"_blank\">Wikimedia<\/a><\/li>\n<li><a href=\"https:\/\/comet.nerc.ac.uk\/earth-observation\/insar\/how-insar-works\/\" rel=\"noopener noreferrer\" target=\"_blank\">Centre for the Observation and Modeling of Earthquakes, Volcanoes, and Tectonics<\/a><\/li>\n<li><a href=\"https:\/\/www.ga.gov.au\/scientific-topics\/positioning-navigation\/geodesy\/geodetic-techniques\/interferometric-synthetic-aperture-radar\" rel=\"noopener noreferrer\" target=\"_blank\">Geoscience Australia<\/a><\/li>\n<li><a href=\"https:\/\/volcanoes.usgs.gov\/vhp\/insar.html\" rel=\"noopener noreferrer\" target=\"_blank\">USGS<\/a><\/li>\n<li>Webinar for InSAR Analysis: <a href=\"https:\/\/forum.step.esa.int\/t\/nasa-arset-sar-interferometry-for-earthquakes-training\/11262\" rel=\"noopener noreferrer\" target=\"_blank\">NASA<\/a>\n<\/ul>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_local_update_shade_20190713_interferrogram_20190716.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_local_update_shade_20190713_interferrogram_20190716.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>This map is made using the same basic data, though it has been processed in a way to show the overall ground motion with just two colors, instead of color bands. This is called the unwrapped image.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_local_update_shade_20190713_ARIA_coseismic_20190716.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/20190705_ridgecrest_local_update_shade_20190713_ARIA_coseismic_20190716.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Below is the first in a series of videos that explains more about SAR and InSAR analyses.<\/li>\n<p><iframe loading=\"lazy\" width=\"520\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Xemo2ZpduHA\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/ul>\n<h2><font color=orange><strong>Dr. Sotiris Valkaniotis<\/strong><\/font><\/h2>\n<ul>\n<li><a href=\"https:\/\/twitter.com\/SotisValkan\" rel=\"noopener noreferrer\" target=\"_blank\">Dr. Valkaniotis<\/a> is a Greek geologist who has a great set of remote sensing skills who studies earthquake geology and paleoseismology. I include lots of social media posts below where people share their analyses. However, I select two images from Dr. Valkaniotis for this earthquake. Contact him for more information about his processing. As embedded below in the social media section, here is <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151467585160003584\" rel=\"noopener noreferrer\" target=\"_blank\">the tweet that is the source of these two maps<\/a>.<\/li>\n<li>These images are similar to the NASA JPL ARIA unwrapped maps above. I include his description below in blockquote.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/interferrogram_descending_sentinel1_valkaniotis_20190628_20190710_01.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/interferrogram_descending_sentinel1_valkaniotis_20190628_20190710_01.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nGradient render from unwrapped LOS displacement map (higher quality 20m from SNAP). Surface ruptures (major &#038; minor) are easily visible as dark linear features (high displacement gradient). Processing in <a href=\"https:\/\/twitter.com\/esa_gep\" rel=\"noopener noreferrer\" target=\"_blank\">@esa_gep<\/a>. Descending pair from <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash\" rel=\"noopener noreferrer\" target=\"_blank\">#Sentinel1<\/a>, <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrestearthquake?src=hash\" rel=\"noopener noreferrer\" target=\"_blank\">#Ridgecrestearthquake<\/a>\n<\/p><\/blockquote>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/interferrogram_ascending_sentinel1_valkaniotis_20190628_20190710_01.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/interferrogram_ascending_sentinel1_valkaniotis_20190628_20190710_01.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nAnd the ascending pair from <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash\" rel=\"noopener noreferrer\" target=\"_blank\">#Sentinel1<\/a>, <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrestearthquake?src=hash\" rel=\"noopener noreferrer\" target=\"_blank\">#Ridgecrestearthquake<\/a>. Gradient render from unwrapped LOS displacement map (higher quality 20m  from SNAP). Processing in <a href=\"https:\/\/twitter.com\/esa_gep\" rel=\"noopener noreferrer\" target=\"_blank\">@esa_gep<\/a>.\n<\/p><\/blockquote>\n<li>Here is a <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151831167928360960\" rel=\"noopener noreferrer\" target=\"_blank\">map that Dr. Valkaniotis prepared<\/a> showing fault lines he has interpreted from his model results.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/fault_map_valkaniotis_20190717_01.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/fault_map_valkaniotis_20190717_01.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nComplex and detailed pattern of co-seismic ruptures for the #RidgecrestEarthquake sequence. Red lines are primary &#038; secondary surface ruptures, together with small triggered ruptures away from main faults. Previously mapped Quaternary Faults with yellow, for comparison.\n<\/p><\/blockquote>\n<\/ul>\n<h2><font color=orange><strong>PBS News Hour: 2019.07.08<\/strong><\/font><\/h2>\n<div style=\"width: 640px;\" class=\"wp-video\"><!--[if lt IE 9]><script>document.createElement('video');<\/script><![endif]-->\n<video class=\"wp-video-shortcode\" id=\"video-8806-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/PBS_NewsHour_full_episode_July_8_2019_clip.mp4?_=1\" \/><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/PBS_NewsHour_full_episode_July_8_2019_clip.mp4\">http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/PBS_NewsHour_full_episode_July_8_2019_clip.mp4<\/a><\/video><\/div>\n<h2><font color=orange><strong>Death Valley at Devil&#8217;s Hole<\/strong><\/font><\/h2>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.nps.gov\/media\/video\/embed.htm?id=10BFE6E0-E94E-2768-0BCBA5F0756EA110\" width=\"480\" height=\"306\" frameborder=\"0\" scrolling=\"auto\" allowfullscreen><\/iframe><\/p>\n<blockquote><p>\nThe <a href=\"https:\/\/www.kqed.org\/science\/1945073\/underwater-video-shows-violent-shaking-during-7-1m-socal-earthquake\" rel=\"noopener noreferrer\" target=\"_blank\">clip shows water violently sloshing around<\/a>, rising and falling 10 to 15 feet, according to a park estimate. The video captures two angles, one looking into the cave and the other underwater inside it.<br \/>\nDevils Hole is a part of the desert uplands and spring-fed oases that make up  the Ash Meadows complex, a national wildlife refuge.\n<\/p><\/blockquote>\n<h2><font color=orange><strong>Temblor Articles<\/strong><\/font><\/h2>\n<p>Ross Stein (Ph.D.), Volkan Sevilgan (M.Sc.), Tiegan Hobbs (Ph.D.), Chris Rollins (Ph.D.), Geoffrey Ely, (Ph.D.), and Shinji Toda (Ph.D.) are coauthors to a suite of 5 articles presented on <a href=\"http:\/\/temblor.net\/\" rel=\"noopener noreferrer\" target=\"_blank\">Temblor.net<\/a>. Temblor is a National Science Foundation funded organization that promotes earthquake insurance and seismic retrofits for people in earthquake country. <a href=\"http:\/\/earthjay.com\/?page_id=7908\" rel=\"noopener noreferrer\" target=\"_blank\">I wrote several articles for Temblor<\/a> prior to starting work at the California Geological Survey. (My efforts at earthjay.com are purely volunteer and do not reflect endorsement nor review from or by CGS.)<br \/>\nThese reports are excellent sources of interpretive information at the detail for non experts (sometimes my reports are at a detail more aimed towards undergraduate geology students, though I attempt to make them available to a broad audience as well). I include a few figures from their reports that I find most interesting, but please check out their articles for more information!<\/p>\n<ul>\n<li>Dr. Stein begins by presenting an hypothesis that these earthquakes are in a region of increased tectonic stress following the 1872 Owens Valley Earthquake, estimated to have a magnitude of M 7.6 (though it happened prior to modern seismometer instrumentation, so magnitude estimates have considerable uncertainty). <\/li>\n<li>When earthquake faults slip, the surrounding crust is squished and squashed. This deformation changes the tectonic stresses in the crust. In some places this change causes an increase in the amount of stress on earthquake faults and in some places it decreases the tectonic stress. In places where the stress increases, the fault is brought closer to having an earthquake, and vice versa for places where the stress is diminished.<\/li>\n<li>These stress changes are very small, so for a fault to be triggered by these changes in &#8220;static coulomb stress,&#8221; the fault had to be almost ready to slip before these changes happened. More can be found in Stein (2003) and Toda et al. (2005) linked below in the references.<\/li>\n<li>In the map below, warm colors represent areas with an increase in (static coulomb stress) and cool colors represent a decrease in stress. I include their figure caption in blockquote below the figure (as for all their figures).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_04_02_1872-stress-transfer-M71.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_04_02_1872-stress-transfer-M71.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nhe site of the July 4th shock was likely brought closer to failure in the 1872 M~7.6 shock. Notice that the (red) stress trigger zones of the this 148-year-old quake are all seismically active today, whereas the (blue) stress shadows are generally devoid of shocks.\n<\/p><\/blockquote>\n<\/ul>\n<ul>\n<li>The Owens Valley fault triggering is speculative of course, since that earthquake was so long ago. However, there are other cases where aftershocks or triggered earthquakes are happening a long time after the main event. For example, there are ongoing aftershocks following an 1872 earthquake near Lake Chelan (Bakun et al., 2002; Brocher et al., 2018).<\/li>\n<li>Stein and his colleagues calculated &#8220;static coulomb&#8221; stress changes imparted by the Ridgecrest Earthquake Sequence onto a series of other faults in the area. Read <a href=\"http:\/\/temblor.net\/earthquake-insights\/m-7-1-socal-earthquake-triggers-aftershocks-up-to-100-mi-away-whats-next-9055\/\" rel=\"noopener noreferrer\" target=\"_blank\">more about their analyses here<\/a>.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_04_03_ridgecrest_july6_7pt1_nospecifiedfault-2.png\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_04_03_ridgecrest_july6_7pt1_nospecifiedfault-2.png\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nHere we calculate stress transferred to the principal mapped faults, using the USGS slip model for the 7.1 and a model based on University of Nevada Reno GPS displacements for the 6.4 (not shown here for simplicity, but included). Most of the stress change is from the 7.1: it was several times larger than the 6.4 and torqued the surrounding crust far more. This fault inventory might be woefully incomplete, of course: the 7.1 itself struck on an unmapped fault. Nevertheless, the most striking result is the >2-bar stress increase on a 30-km (20-mile) section of the Garlock Fault. An end-to-end rupture on the Garlock, if (still) possible, would be in the magnitude 7.6-7.8 range.\n<\/p><\/blockquote>\n<\/ul>\n<ul>\n<li>In my interpretive posters above, I mention the areas where there have been triggered earthquakes (e.g. the Coso Geothermal Field, the Garlock fault, the Ash Hill fault). Turns out, Stein and his colleagues were thinking the same thing.<\/li>\n<li>They prepared a figure in <a href=\"http:\/\/temblor.net\/earthquake-insights\/the-ridgecrest-earthquakes-torn-ground-nested-foreshocks-aftershocks-near-the-garlock-and-temblors-forecast-9102\/\" rel=\"noopener noreferrer\" target=\"_blank\">their report here<\/a> where they show changes in &#8220;static coulomb&#8221; stress. They label the same areas I mention (except the Ash Hill fault in Panamint Valley). Take a look at the areas of increased stress compared to these three regions (even the Ash Hill fault is in an area of increased stress).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_05_04_ridgecrest_july9_7pt1_to_interpolatedreceiverorientation_final-2.png\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_05_04_ridgecrest_july9_7pt1_to_interpolatedreceiverorientation_final-2.png\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nFaults in the red lobes are calculated to be brought closer to failure; those in the blue \u2018stress shadows\u2019 are inhibited from failure. The calculation estimates what the dominant fault orientations are around the earthquakes by interpolating between major mapped faults (shown in red lines). So, we would expect strong stressing in the Coso Volcanic Field to the north (where the aftershocks lie), and along the Garlock Fault to the south (but not where most of them lie).\n<\/p><\/blockquote>\n<\/ul>\n<ul>\n<li>Hobbs and Rollins speculate that the San Andreas fault may also have changes in (static coulomb) stress imparted by the Garlock fault if that were to slip. Read more in their article <a href=\"http:\/\/temblor.net\/earthquake-insights\/earthquake-early-warning-system-challenged-by-the-largest-socal-shock-in-20-years-9005\/\" rel=\"noopener noreferrer\" target=\"_blank\">here<\/a>.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_02_09_Fig_14_Temblor.png\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_02_09_Fig_14_Temblor.png\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nIf the western and central Garlock were to rupture, it would load the section of the San Andreas just north of Los Angeles. The jog in the San Andreas under the S in \u201cSource\u201d is at Palmdale. Figure from McAuliffe et al. [2013].\n<\/p><\/blockquote>\n<\/ul>\n<p><strong><\/p>\n<h3>Below are all the Temblor articles to read<\/h3>\n<p><\/strong><\/p>\n<table style=\"width:100%\">\n<tr>\n<td><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/01_Southern%20California%20M%206.4%20earthquake%20stressed%20by%20two%20large%20historic%20ruptures%20_%20Temblor.net.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_01_Southern-California-Earthquake-300x150.png\" alt=\"\" \/><\/a><\/td>\n<td style=\"vertical-align:top\"><font color=\"Cornsilk\"><a href=\"http:\/\/temblor.net\/earthquake-insights\/southern-california-m-6-4-earthquake-stressed-by-two-large-historic-ruptures-8976\/\" rel=\"noopener noreferrer\" target=\"_blank\">2019.07.04<\/a> <strong>Southern California M 6.4 earthquake stressed by two large historic ruptures<\/strong><\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/02_Earthquake%20early%20warning%20system%20challenged%20by%20the%20largest%20SoCal%20shock%20in%2020%20years%20_%20Temblor.net.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_02_5d1e934f98f5a.image_-300x150.jpg\" alt=\"\" \/><\/a><\/td>\n<td style=\"vertical-align:top\"><font color=\"Cornsilk\"><a href=\"http:\/\/temblor.net\/earthquake-insights\/earthquake-early-warning-system-challenged-by-the-largest-socal-shock-in-20-years-9005\/\" rel=\"noopener noreferrer\" target=\"_blank\">2019.07.05<\/a> <strong>Earthquake early warning system challenged by the largest SoCal shock in 20 years<\/strong><\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/03_Magnitude%207.1%20earthquake%20rips%20northwest%20from%20the%20M6.4%20just%2034%20hours%20later%20_%20Temblor.net.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_03_2-300x150.jpg\" alt=\"\" \/><\/a><\/td>\n<td style=\"vertical-align:top\"><font color=\"Cornsilk\"><a href=\"http:\/\/temblor.net\/earthquake-insights\/magnitude-7-1-earthquake-rips-northwest-from-the-m6-4-just-34-hours-later-9041\/\" rel=\"noopener noreferrer\" target=\"_blank\">2019.07.06<\/a> <strong>Magnitude 7.1 earthquake rips northwest from the M6.4 just 34 hours later<\/strong><\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/04_M%207.1%20SoCal%20earthquake%20triggers%20aftershocks%20up%20to%20100%20mi%20away_%20What%e2%80%99s%20next_%20_%20Temblor.net.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_04_july6article_1-300x150.jpg\" alt=\"\" \/><\/a><\/td>\n<td style=\"vertical-align:top\"><font color=\"Cornsilk\"><a href=\"http:\/\/temblor.net\/earthquake-insights\/m-7-1-socal-earthquake-triggers-aftershocks-up-to-100-mi-away-whats-next-9055\/\" rel=\"noopener noreferrer\" target=\"_blank\">2019.07.06<\/a> <strong>M 7.1 SoCal earthquake triggers aftershocks up to 100 mi away: What\u2019s next?<\/strong><\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/05_The%20Ridgecrest%20earthquakes_%20Torn%20ground,%20nested%20foreshocks,%20Garlock%20shocks,%20and%20Temblor%e2%80%99s%20forecast%20_%20Temblor.net.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"><img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/temblor\/temblor_ridgecrest_05_thumnail-300x150.jpg\" alt=\"\" \/><\/a><\/td>\n<td style=\"vertical-align:top\"><font color=\"Cornsilk\"><a href=\"http:\/\/temblor.net\/earthquake-insights\/the-ridgecrest-earthquakes-torn-ground-nested-foreshocks-aftershocks-near-the-garlock-and-temblors-forecast-9102\/\" rel=\"noopener noreferrer\" target=\"_blank\">2019.07.09<\/a> <strong>The Ridgecrest earthquakes: Torn ground, nested foreshocks, Garlock shocks, and Temblor\u2019s forecast<\/strong><\/td>\n<\/tr>\n<p><\/font><br \/>\n<\/table>\n<ul>\n<li>Here are the references for these Temblor articles.<\/li>\n<ul>\n<li>Stein, R. S., and Sevilgen, V., (2019), Southern California M 6.4 earthquake stressed by two large historic ruptures, Temblor, <a href=\"http:\/\/doi.org\/10.32858\/temblor.034\" rel=\"noopener noreferrer\" target=\"_blank\">http:\/\/doi.org\/10.32858\/temblor.034<\/a><\/li>\n<li>Hobbs, T.E. and Rollins, C., (2019), Earthquake early warning system challenged by the largest SoCal shock in 20 years, Temblor, <a href=\"http:\/\/doi.org\/10.32858\/temblor.035\" rel=\"noopener noreferrer\" target=\"_blank\">http:\/\/doi.org\/10.32858\/temblor.035<\/a><\/li>\n<li>Ross S. Stein, Tiegan Hobbs, Chris Rollins, Geoffrey Ely, Volkan Sevilgen, and Shinji Toda, (2019), Magnitude 7.1 earthquake rips northwest from the M6.4 just 34 hours later, Temblor, <a href=\"http:\/\/doi.org\/10.32858\/temblor.037\" rel=\"noopener noreferrer\" target=\"_blank\">http:\/\/doi.org\/10.32858\/temblor.037<\/a><\/li>\n<li>Ross S. Stein, Chris Rollins, Volkan Sevilgen, and Tiegan Hobbs, (2019), M 7.1 SoCal earthquake triggers aftershocks up to 100 mi away: What\u2019s next?, Temblor, <a href=\"http:\/\/doi.org\/10.32858\/temblor.038\" rel=\"noopener noreferrer\" target=\"_blank\">http:\/\/doi.org\/10.32858\/temblor.038<\/a><\/li>\n<li>Chris Rollins, Ross S. Stein, Guoqing Lin, and Deborah Kilb (2019), The Ridgecrest earthquakes: Torn ground, nested foreshocks, Garlock shocks, and Temblor\u2019s forecast, Temblor, <a href=\"http:\/\/doi.org\/10.32858\/temblor.039\" rel=\"noopener noreferrer\" target=\"_blank\">http:\/\/doi.org\/10.32858\/temblor.039<\/a><\/li>\n<\/ul>\n<\/ul>\n<h2><font color=orange><strong>Field Photos<\/strong><\/font><\/h2>\n<ul>\n<li>Below are some field photos I took. I cannot tell anyone where they were taken (at least not yet) as we don&#8217;t have clearance. I may post more later, but wanted to post some to show people the type of observations we were making.<\/li>\n<li>This is <a href=\"https:\/\/twitter.com\/chrisduross\" rel=\"noopener noreferrer\" target=\"_blank\">Dr. Chris DuRoss (USGS)<\/a> as we walked across the scarp at our first site working together.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0103.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0103.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Here is a great one of <a href=\"https:\/\/twitter.com\/neotectonics\" rel=\"noopener noreferrer\" target=\"_blank\">Dr. Jessie T. Jobe (USGS, soon to be USBR)<\/a> taking notes at that same scarp (DuRoss&#8217; boots for scale).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0143.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0143.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>This is a portion of a road where the fault crossed. There were several dm of lateral offset on either side of the road, but the road itself had an imperceptible amount of lateral offset (i.e. 1 \u00b1 1 cm offset). There was some amount of compression here.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0174.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0174.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Here we were projecting the ground surface across the fault to estimate the amount of vertical displacement. <a href=\"https:\/\/twitter.com\/runr447\" rel=\"noopener noreferrer\" target=\"_blank\">Dr. Ryan Gold (USGS)<\/a> is measuring while a Navy Base geologist is holding the profile stick along the ground surface.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/IMG_0835.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/IMG_0835.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Here is a photo very similar to <a href=\"https:\/\/twitter.com\/mrbrianolson\/status\/1149529660943818753\" rel=\"noopener noreferrer\" target=\"_blank\">Mr. Brian Olson&#8217;s<\/a> tweeted photo, but I took this one instead. Dr. Belle Philibosian (USGS) is on the left and Kelly (NAWCL geologist) is on the right. This shows right-lateral strike-slip displacement of 420 cm. We thought nobody would believe us, so we made another measurement nearby to confirm.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0580.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0580.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>I located some beautiful slickenlines (grooves in the fault surface created when the fault slips) and this is Dr. Beth Haddon (USGS) collecting strike, dip and rake data for these lines. We collected many photos of this site so that we can create a 3-D model (using structure from motion).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0640.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0640.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>Here is Dr. Belle Philibosian looking spectacular as usual, providing scale to help us understand the amount of vertical separation across the fault in this location.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0557.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0557.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>We located some evidence for liquefaction too. Here is a sand volcano, where lots of the sediment got washed away by the fluid that possibly shot up through this hole.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0458.jpg\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0458.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>This was a great opportunity to show the compass orientation of these conjugate fault offsets in the road. The road material properties probably controlled the location of the faults here (there were pre-existing planes of weakness as evidenced by the tar patches, but some of the pavement faulting was new).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0285.jpg\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20190705_ridgecrest\/photos\/DSC_0285.jpg\" width=\"100%\" alt=\"\" \/><\/a>\n<\/ul>\n<ul>\n<h2> <strong><font color=orange>San Andreas fault<\/font><\/strong> <\/h2>\n<h3>General Overview<\/h3>\n<li>1906.04.18 <a href=\"http:\/\/earthjay.com\/?p=8428\">M 7.9 San Francisco<\/a><\/li>\n<h3>Earthquake Reports<\/h3>\n<h4>Northern CA<\/h4>\n<ul>\n<li>2017.12.14 <a href=\"http:\/\/earthjay.com\/?p=6593\">M 4.3 Laytonville<\/a><\/li>\n<li>2016.11.06 <a href=\"http:\/\/earthjay.com\/?p=4469\">M 4.1 Laytonville, CA<\/a><\/li>\n<li>2016.11.03 <a href=\"http:\/\/earthjay.com\/?p=4451\">M 3.8 Laytonville, CA<\/a><\/li>\n<li>2016.08.10 <a href=\"http:\/\/earthjay.com\/?p=4152\">M 5.1 Lake Pillsbury, CA<\/a><\/li>\n<\/ul>\n<ul>\n<li>2015.08.30 <a href=\"http:\/\/earthjay.com\/?p=2789\">M 3.6 Mendocino County, CA<\/a><\/li>\n<li>2015.07.27 <a href=\"http:\/\/earthjay.com\/?p=2746\">M 3.5 Point Arena, CA<\/a><\/li>\n<\/ul>\n<h4>Central CA<\/h4>\n<ul>\n<li>2018.07.30 <a href=\"http:\/\/earthjay.com\/?p=7481\">M 3.7 San Pablo Bay<\/a><\/li>\n<li>2018.01.04 <a href=\"http:\/\/earthjay.com\/?p=6815\">M 4.4 Berkeley<\/a><\/li>\n<\/ul>\n<h4>Southern CA<\/h4>\n<ul>\n<li>2019.07.04 <a href=\"http:\/\/earthjay.com\/?p=8656\">M 6.4 Ridgecrest<\/a><\/li>\n<li>2019.07.05 <a href=\"http:\/\/earthjay.com\/?p=8706\">M 6.4 \/ 7.1 Ridgecrest Update #1<\/a><\/li>\n<li>2019.07.18 <a href=\"http:\/\/earthjay.com\/?p=8806\">M 6.4 \/ 7.1 Ridgecrest Update #2<\/a><\/li>\n<li>2019.07.20 <a href=\"http:\/\/earthjay.com\/?p=8850\">M 6.4 \/ 7.1 Ridgecrest Update #3<\/a><\/li>\n<\/ul>\n<ul>\n<li>2016.02.23 <a href=\"http:\/\/earthjay.com\/?p=3758\">M 4.9 Bakersfield<\/a><\/li>\n<\/ul>\n<ul>\n<li>2015.12.30 <a href=\"http:\/\/earthjay.com\/?p=3469\">M 4.4 San Bernardino, CA<\/a><\/li>\n<li>2015.05.03 <a href=\"http:\/\/earthjay.com\/?p=2412\">M 3.8 Los Angeles, CA<\/a><\/li>\n<li>2015.04.13 <a href=\"http:\/\/earthjay.com\/?p=2334\">M 3.3 Los Angeles, CA<\/a><\/li>\n<\/ul>\n<ul>\n<li>2014.04.01 <a href=\"http:\/\/earthjay.com\/?p=1466\">M 5.1 La Habra p-3<\/a><\/li>\n<li>2014.03.29 <a href=\"http:\/\/earthjay.com\/?p=1456\">M 5.1 La Habra p-2<\/a><\/li>\n<li>2014.03.28 <a href=\"http:\/\/earthjay.com\/?p=1435\">M 5.1 La Habra p-1<\/a><\/li>\n<\/ul>\n<h4>Eastern CA<\/h4>\n<ul>\n<li>2016.08.04 <a href=\"http:\/\/earthjay.com\/?p=4163\">M 4.5 Honey Lake, CA<\/a><\/li>\n<\/ul>\n<\/ul>\n<ul>\n<h2> <strong><font color=orange>Southern CA<\/font><\/strong> <\/h2>\n<h3>Earthquake Reports<\/h3>\n<li>2019.06.05 <a href=\"http:\/\/earthjay.com\/?p=8571\">M 4.3 San Clemente Island<\/a><\/li>\n<li>2018.04.05 <a href=\"http:\/\/earthjay.com\/?p=7311\">M 5.3 Channel Islands<\/a><\/li>\n<li>2018.04.05 <a href=\"http:\/\/earthjay.com\/?p=7331\">M 5.3 Channel Islands Update #1<\/a><\/li>\n<li>1994.11.17 <a href=\"http:\/\/earthjay.com\/?p=4835\">M 6.7 Northridge, CA<\/a><\/li>\n<li>1971.02.09 <a href=\"http:\/\/earthjay.com\/?p=7092\">M 6.7 Sylmar, CA<\/a><\/li>\n<\/ul>\n<ul>\n<h2><strong><font color=\"orange\">Social Media<\/font><\/strong><\/h2>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Here&#39;s some context for the M7.1 <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> today in California and its foreshock\/aftershock sequence. It is well off the San Andreas Fault and north of the Garlock fault in the Eastern California Shear Zone. Read more from <a href=\"https:\/\/twitter.com\/temblor?ref_src=twsrc%5Etfw\">@Temblor<\/a> about this area here: <a href=\"https:\/\/t.co\/thInzw8ghF\">https:\/\/t.co\/thInzw8ghF<\/a> <a href=\"https:\/\/t.co\/NpLvDpyn1y\">pic.twitter.com\/NpLvDpyn1y<\/a><\/p>\n<p>&mdash; Dr. Kasey Aderhold (@kaseyaderhold) <a href=\"https:\/\/twitter.com\/kaseyaderhold\/status\/1147384613419008000?ref_src=twsrc%5Etfw\">July 6, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">SLIPNEAR model along the aftershocks of the M6.4 mainshock. Slip inversion carried out with 2 different fault planes, one SE dipping (strike 45) from FMNEAR, and the other NW dipping from GCMT (strike 228). Slip distribution is quite similar in both cases (main slip zone stable) <a href=\"https:\/\/t.co\/gegZ9BSqR9\">pic.twitter.com\/gegZ9BSqR9<\/a><\/p>\n<p>&mdash; Bertrand Delouis (@BertrandDelouis) <a href=\"https:\/\/twitter.com\/BertrandDelouis\/status\/1147891289029042177?ref_src=twsrc%5Etfw\">July 7, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Cumulative  stress change caused by  4 July 2019 M=6.4  and the 7 July 2019 M=7.1 earthquakes on nearby strike slip faults, the red color represents increase seismic hazard Dr Kariche@IPGS2019   <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/twitter.com\/DrLucyJones?ref_src=twsrc%5Etfw\">@DrLucyJones<\/a> <a href=\"https:\/\/t.co\/jpGfqKhdzD\">pic.twitter.com\/jpGfqKhdzD<\/a><\/p>\n<p>&mdash; Jugurtha Kariche (@JkaricheKariche) <a href=\"https:\/\/twitter.com\/JkaricheKariche\/status\/1147878669765005312?ref_src=twsrc%5Etfw\">July 7, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Pixel tracking of <a href=\"https:\/\/twitter.com\/planetlabs?ref_src=twsrc%5Etfw\">@Planetlabs<\/a> satellite images reveals the northern termination of the Mw 7.1 July 5th <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a>. Result shows only ~16 km of rupture, with a minor transtensional splay in lower right. Slip profile, exhibits classic \u2018dogtail\u2019 taper. <a href=\"https:\/\/t.co\/S5CfsKd5AP\">pic.twitter.com\/S5CfsKd5AP<\/a><\/p>\n<p>&mdash; Chris Milliner (@Geo_GIF) <a href=\"https:\/\/twitter.com\/Geo_GIF\/status\/1147907391196823552?ref_src=twsrc%5Etfw\">July 7, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">A complete image of the Mw 7.1 Ridgecrest <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> showing amount of surface displacement measured by <a href=\"https:\/\/twitter.com\/planetlabs?ref_src=twsrc%5Etfw\">@planetlabs<\/a> satellite imagery. Rupture is ~40 km in length with up to ~5m of fault slip. Fault trace has remarkably similar rupture geometry to 1999 Mw 7.1 Hector Mine event. <a href=\"https:\/\/t.co\/ORBA5D0gKz\">pic.twitter.com\/ORBA5D0gKz<\/a><\/p>\n<p>&mdash; Chris Milliner (@Geo_GIF) <a href=\"https:\/\/twitter.com\/Geo_GIF\/status\/1148357756354617344?ref_src=twsrc%5Etfw\">July 8, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Came across this sandy vegetation mound out on the China Lake bed, which was cut in half by the fault rupture. Measured offset is approximately 8 feet. <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/t.co\/ok95QmfZQ8\">pic.twitter.com\/ok95QmfZQ8<\/a><\/p>\n<p>&mdash; Brian Olson (@mrbrianolson) <a href=\"https:\/\/twitter.com\/mrbrianolson\/status\/1148254538551291904?ref_src=twsrc%5Etfw\">July 8, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Estimated preliminary extent of the main rupture of Mw7.1 <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> CA, combining surface rupture traces from <a href=\"https:\/\/twitter.com\/CATnewsDE?ref_src=twsrc%5Etfw\">@CATnewsDE<\/a> and <a href=\"https:\/\/twitter.com\/Geo_GIF?ref_src=twsrc%5Etfw\">@Geo_GIF<\/a> (traced on <a href=\"https:\/\/twitter.com\/planetlabs?ref_src=twsrc%5Etfw\">@planetlabs<\/a> imagery). Main rupture (red) extends at &gt;45km. Black dots: reviewed epicenters USGS. Quaternary Faults: USGS. <a href=\"https:\/\/t.co\/Yq68sg86ub\">pic.twitter.com\/Yq68sg86ub<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1148174196633214976?ref_src=twsrc%5Etfw\">July 8, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Great day mapping. Even made a 2 second cameo on PBS News hour. ;)<br \/> <a href=\"https:\/\/twitter.com\/patton_cascadia?ref_src=twsrc%5Etfw\">@patton_cascadia<\/a><a href=\"https:\/\/twitter.com\/FaultyAndSalty?ref_src=twsrc%5Etfw\">@FaultyAndSalty<\/a><a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/t.co\/kkDR4WP2ib\">https:\/\/t.co\/kkDR4WP2ib<\/a><\/p>\n<p>&mdash; Nick Graehl (@nickgraehl) <a href=\"https:\/\/twitter.com\/nickgraehl\/status\/1148461084589694976?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">As promised, here are pictures of formerly high-speed dirt and environs! Enjoy these annotated photos from our recon mapping with J. Dolan and S. Attia yesterday of the Searles Valley EQ seq. near Ridgecrest, CA. Please contact me for more photos and information-ahatem@usc.edu <a href=\"https:\/\/t.co\/jZSIEaJuZY\">pic.twitter.com\/jZSIEaJuZY<\/a><\/p>\n<p>&mdash; Alex Hatem (@pride_of_lowell) <a href=\"https:\/\/twitter.com\/pride_of_lowell\/status\/1148417064672956416?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">A few more! <a href=\"https:\/\/t.co\/OckTe5LSx7\">pic.twitter.com\/OckTe5LSx7<\/a><\/p>\n<p>&mdash; Alex Hatem (@pride_of_lowell) <a href=\"https:\/\/twitter.com\/pride_of_lowell\/status\/1148417741407211520?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">OK, this really is the last one. The M6.4 earthquake strikes almost perpendicular to the track direction, and shows a deformation pattern that is more symmetric. We are mostly seeing the E-W movement of the fault in this case.<\/p>\n<p>[Thanks to <a href=\"https:\/\/twitter.com\/JAXA_en?ref_src=twsrc%5Etfw\">@JAXA_en<\/a> for a great radar satellite!] <a href=\"https:\/\/t.co\/joFeJ5tURk\">pic.twitter.com\/joFeJ5tURk<\/a><\/p>\n<p>&mdash; Gareth Funning (@gfun) <a href=\"https:\/\/twitter.com\/gfun\/status\/1148721412430942208?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\"><a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestQuake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestQuake<\/a> from Space<\/p>\n<p>This colorful map shows surface changes from the two earthquakes that rattled California last week. More here: <a href=\"https:\/\/t.co\/qnj4B8zJm8\">https:\/\/t.co\/qnj4B8zJm8<\/a> <a href=\"https:\/\/t.co\/w44MXwd3xL\">pic.twitter.com\/w44MXwd3xL<\/a><\/p>\n<p>&mdash; NASA JPL (@NASAJPL) <a href=\"https:\/\/twitter.com\/NASAJPL\/status\/1148667131032027138?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Some photos from today&#8230;<a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/t.co\/x5HrsdpJc6\">pic.twitter.com\/x5HrsdpJc6<\/a><\/p>\n<p>&mdash; Nick Graehl (@nickgraehl) <a href=\"https:\/\/twitter.com\/nickgraehl\/status\/1148461776872230913?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Surface rupture &amp; displacement from the Mw 7.1 <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> CA as seen from <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel2?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel2<\/a> images from <a href=\"https:\/\/twitter.com\/CopernicusEU?ref_src=twsrc%5Etfw\">@CopernicusEU<\/a>. Animation using June 28 and July 8 images. Optical correlation map to follow later. <a href=\"https:\/\/t.co\/4cW0ovSIcM\">pic.twitter.com\/4cW0ovSIcM<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1148501097226678272?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Quake ripped right through the flattest parts of the basin with maybe a little compression ridge in the southern stepover <a href=\"https:\/\/t.co\/NnSmKa3kSv\">pic.twitter.com\/NnSmKa3kSv<\/a><\/p>\n<p>&mdash; Bill Barnhart (@HawkeyeSeismo) <a href=\"https:\/\/twitter.com\/HawkeyeSeismo\/status\/1148702139105062912?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">It was a boots on the ground kind of day for CGS and USGS. Today we focused on measuring fault rupture offsets on the China Lake NAWS base   <a href=\"https:\/\/twitter.com\/hashtag\/faultmapping?src=hash&amp;ref_src=twsrc%5Etfw\">#faultmapping<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/CalConservation?ref_src=twsrc%5Etfw\">@CalConservation<\/a> <a href=\"https:\/\/t.co\/L2PTZZF3ed\">pic.twitter.com\/L2PTZZF3ed<\/a><\/p>\n<p>&mdash; Ellie Spangler (@EllieSpangler) <a href=\"https:\/\/twitter.com\/EllieSpangler\/status\/1148473287598465024?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Data available; high-resolution figures and raster files for subpixel co-seismic offsets for the Mw6.4 and Mw7.1 <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a>, California <a href=\"https:\/\/twitter.com\/hashtag\/earthquakes?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquakes<\/a>, using <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel2?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel2<\/a> images. <a href=\"https:\/\/twitter.com\/hashtag\/MicMac?src=hash&amp;ref_src=twsrc%5Etfw\">#MicMac<\/a> and CosiCorr files. Files uploaded in Zenodo repository: <a href=\"https:\/\/t.co\/l10csPV4n7\">https:\/\/t.co\/l10csPV4n7<\/a> <a href=\"https:\/\/t.co\/1MQIeeEzFj\">pic.twitter.com\/1MQIeeEzFj<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1148571700650565632?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">More from our <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> coverage: DOC Drone footage south of Ransberg Road captures surface rupture. Photo: Roadway surface displacement &#8211; right-lateral offset approx. 6.5 ft and 3&#39; vertical. Offset bottom of pic 5&#39; ~ Footage: Nathaniel Roth. Photo: <a href=\"https:\/\/twitter.com\/mrbrianolson?ref_src=twsrc%5Etfw\">@mrbrianolson<\/a> <a href=\"https:\/\/t.co\/6kDX8Tcc1e\">pic.twitter.com\/6kDX8Tcc1e<\/a><\/p>\n<p>&mdash; DeptofConservation (@CalConservation) <a href=\"https:\/\/twitter.com\/CalConservation\/status\/1148757122391400454?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Surface fault ruptures from the July 4th Mw6.4 <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> visible using <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel2?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel2<\/a> optical (normalized difference &#8211; Band4) and <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a> interferogram (made with SNAP at <a href=\"https:\/\/twitter.com\/esa_gep?ref_src=twsrc%5Etfw\">@esa_gep<\/a>). Multiple traces, marked with orange arrows <a href=\"https:\/\/t.co\/70ePXUsiQD\">pic.twitter.com\/70ePXUsiQD<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1148936597838204930?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">The Ridgecrest earthquakes: Torn ground, nested foreshocks, Garlock shocks, and Temblor\u2019s forecast | <a href=\"https:\/\/t.co\/1twVj9F84q\">https:\/\/t.co\/1twVj9F84q<\/a> <a href=\"https:\/\/t.co\/x6aHPj0Az0\">https:\/\/t.co\/x6aHPj0Az0<\/a> via <a href=\"https:\/\/twitter.com\/hashtag\/NSFfunded?src=hash&amp;ref_src=twsrc%5Etfw\">#NSFfunded<\/a> <a href=\"https:\/\/twitter.com\/temblor?ref_src=twsrc%5Etfw\">@temblor<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/California?src=hash&amp;ref_src=twsrc%5Etfw\">#California<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#Earthquake<\/a><\/p>\n<p>&mdash; temblor (@temblor) <a href=\"https:\/\/twitter.com\/temblor\/status\/1148834728570687488?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Azimuth phase gradient map, Range phase gradient map, Zoom in of range phase gradient map. It is filled with cracks!!!! <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/t.co\/pJ5ydG5xR0\">pic.twitter.com\/pJ5ydG5xR0<\/a><\/p>\n<p>&mdash; Xiaohua Xu (@XiaohuaXu1) <a href=\"https:\/\/twitter.com\/XiaohuaXu1\/status\/1148856954946670592?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\"><a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Trona?src=hash&amp;ref_src=twsrc%5Etfw\">#Trona<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquakes?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquakes<\/a><br \/>M\u22652.0 2019-07-04&gt;2019-07-10-09h <a href=\"https:\/\/t.co\/sRUqn89xEO\">https:\/\/t.co\/sRUqn89xEO<\/a> relocations w\/ station corrections, over ALOS-2\/JAXA\/<a href=\"https:\/\/twitter.com\/NASAJPL?ref_src=twsrc%5Etfw\">@NASAJPL<\/a>-ARIA interferogram <a href=\"https:\/\/t.co\/NpRQTwvQn8\">https:\/\/t.co\/NpRQTwvQn8<\/a><br \/>Events colored by origin time before &amp; after M7 mainshock (left), &amp; by depth (right) <a href=\"https:\/\/t.co\/GnOO4kYR0K\">pic.twitter.com\/GnOO4kYR0K<\/a><\/p>\n<p>&mdash; Anthony Lomax &#x1f30d;&#x1f1ea;&#x1f1fa; (@ALomaxNet) <a href=\"https:\/\/twitter.com\/ALomaxNet\/status\/1148941105767096320?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Track 64 interferogram from Sentinel-1 data acquired by <a href=\"https:\/\/twitter.com\/esa?ref_src=twsrc%5Etfw\">@esa<\/a>. Remind me of the Hector Mine interferogram. <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrestearthquakes?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrestearthquakes<\/a> <a href=\"https:\/\/t.co\/oqDQa5qC6e\">pic.twitter.com\/oqDQa5qC6e<\/a><\/p>\n<p>&mdash; Xiaohua Xu (@XiaohuaXu1) <a href=\"https:\/\/twitter.com\/XiaohuaXu1\/status\/1148848914075754496?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Following <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> earthquake, <a href=\"https:\/\/twitter.com\/NASAJPL?ref_src=twsrc%5Etfw\">@NASAJPL<\/a> ARIA ALOS-2 interferogram, appears to show very small triggered slip on the Garlock fault. Bottom shows USGS Quaternary fault trace. <a href=\"https:\/\/t.co\/kppDaIkpsD\">pic.twitter.com\/kppDaIkpsD<\/a><\/p>\n<p>&mdash; Chris Milliner (@Geo_GIF) <a href=\"https:\/\/twitter.com\/Geo_GIF\/status\/1148717340906835968?ref_src=twsrc%5Etfw\">July 9, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">I saw some spectacular faulting while putting in extra seismometers around Ridgecrest. <a href=\"https:\/\/t.co\/aOXz9aaNnY\">pic.twitter.com\/aOXz9aaNnY<\/a><\/p>\n<p>&mdash; Elizabeth Cochran (@escochran) <a href=\"https:\/\/twitter.com\/escochran\/status\/1148806572585316353?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Ken Hudnut (USGS), along  w\/partners Bob Fenton (FEMA Region IX Admin.) and Mark Ghilarducci (Director of CalOES) briefed <a href=\"https:\/\/twitter.com\/VP?ref_src=twsrc%5Etfw\">@VP<\/a> about the M7.1 earthquake that struck CA on July 5, 2019.  Emphasis was placed upon coordination between CGS, USGS and  <a href=\"https:\/\/twitter.com\/USNavy?ref_src=twsrc%5Etfw\">@USNavy<\/a>. <a href=\"https:\/\/t.co\/suTpYkbe5z\">https:\/\/t.co\/suTpYkbe5z<\/a> <a href=\"https:\/\/t.co\/lrSXC04T8W\">pic.twitter.com\/lrSXC04T8W<\/a><\/p>\n<p>&mdash; USGS (@USGS) <a href=\"https:\/\/twitter.com\/USGS\/status\/1149119109126336513?ref_src=twsrc%5Etfw\">July 11, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">A preliminary semi-realistic finite element model of M6.9 Ridgecrest EQ, with fault curvature following pixel-tracked trace, CVM-H tomography, topography. Vertical fault is set for this stage. Green&#39;s function library on its way. <a href=\"https:\/\/twitter.com\/SotisValkan?ref_src=twsrc%5Etfw\">@SotisValkan<\/a> <a href=\"https:\/\/twitter.com\/chandraphyctc?ref_src=twsrc%5Etfw\">@chandraphyctc<\/a> <a href=\"https:\/\/twitter.com\/shirzaei?ref_src=twsrc%5Etfw\">@shirzaei<\/a> <a href=\"https:\/\/twitter.com\/ratlab3?ref_src=twsrc%5Etfw\">@ratlab3<\/a> <a href=\"https:\/\/t.co\/WSd9520fiT\">pic.twitter.com\/WSd9520fiT<\/a><\/p>\n<p>&mdash; Jay Tung (@jaytung_earth) <a href=\"https:\/\/twitter.com\/jaytung_earth\/status\/1149110775547682820?ref_src=twsrc%5Etfw\">July 11, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Thanks to incoming InSAR images covering the complete rupture (below ALOS-2 interferogram from the <a href=\"https:\/\/twitter.com\/NASAJPL?ref_src=twsrc%5Etfw\">@NASAJPL<\/a> ARIA project), the information value provided by previous rapid slip inversions using strong motion data (SLIPNEAR) can be evaluated: <a href=\"https:\/\/t.co\/KDTC45kKuP\">pic.twitter.com\/KDTC45kKuP<\/a><\/p>\n<p>&mdash; Bertrand Delouis (@BertrandDelouis) <a href=\"https:\/\/twitter.com\/BertrandDelouis\/status\/1148856614897762304?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Map of permanent ground displacement due to M6.4 and M7.1 earthquakes near Ridgecrest California from NASA Caltech-JPL ARIA processing of JAXA ALOS-2 (unwrapped interferogram, path 65). This InSAR sensitive to west and up motion of ground. <a href=\"https:\/\/twitter.com\/zross_?ref_src=twsrc%5Etfw\">@zross_<\/a> relocated main and aftershocks <a href=\"https:\/\/t.co\/CuGtOv78nB\">pic.twitter.com\/CuGtOv78nB<\/a><\/p>\n<p>&mdash; Eric Fielding (@EricFielding) <a href=\"https:\/\/twitter.com\/EricFielding\/status\/1148955536185950209?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Our Automatic Sentinel1 processing of co-seismic interferogram for the California Earthquakes with Mw. 7.1 and Mw 6.4 (Interferogram and LOS  Displacement map) using <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a> <a href=\"https:\/\/twitter.com\/ESA_EO?ref_src=twsrc%5Etfw\">@ESA_EO<\/a> <a href=\"https:\/\/twitter.com\/CopernicusEU?ref_src=twsrc%5Etfw\">@CopernicusEU<\/a> Track 64 (20190704-20190710) <a href=\"https:\/\/twitter.com\/hashtag\/IREA?src=hash&amp;ref_src=twsrc%5Etfw\">#IREA<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/CNR?src=hash&amp;ref_src=twsrc%5Etfw\">#CNR<\/a>  <a href=\"https:\/\/twitter.com\/FraxInSAR?ref_src=twsrc%5Etfw\">@FraxInSAR<\/a> <a href=\"https:\/\/twitter.com\/claudiodeluca?ref_src=twsrc%5Etfw\">@claudiodeluca<\/a>  <a href=\"https:\/\/twitter.com\/VDN75?ref_src=twsrc%5Etfw\">@VDN75<\/a> <a href=\"https:\/\/t.co\/ruGHFoQ0pv\">pic.twitter.com\/ruGHFoQ0pv<\/a><\/p>\n<p>&mdash; Fernando Monterroso (@maferp_13) <a href=\"https:\/\/twitter.com\/maferp_13\/status\/1148950645451436032?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Left lateral faulting <a href=\"https:\/\/twitter.com\/hashtag\/SoCalEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#SoCalEarthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/drone?src=hash&amp;ref_src=twsrc%5Etfw\">#drone<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/California?src=hash&amp;ref_src=twsrc%5Etfw\">#California<\/a> <a href=\"https:\/\/t.co\/7QHGGXGm7G\">pic.twitter.com\/7QHGGXGm7G<\/a><\/p>\n<p>&mdash; Forrest Lanning (@rabidmarmot) <a href=\"https:\/\/twitter.com\/rabidmarmot\/status\/1149170915344670720?ref_src=twsrc%5Etfw\">July 11, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\"><a href=\"https:\/\/twitter.com\/hashtag\/Sentinel2?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel2<\/a> mapped co-seismic <a href=\"https:\/\/twitter.com\/hashtag\/fault?src=hash&amp;ref_src=twsrc%5Etfw\">#fault<\/a> traces from the <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> CA <a href=\"https:\/\/twitter.com\/hashtag\/earthquakes?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquakes<\/a>. While Sentinel-2 (Band 4 normalized difference) offers extravagant detail at certain parts, is missing traces in other areas. Interesting when in comparison with other sensors\/methods &amp; field. <a href=\"https:\/\/t.co\/VCb8ghN8WM\">pic.twitter.com\/VCb8ghN8WM<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1149223626631237632?ref_src=twsrc%5Etfw\">July 11, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">My first look at <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> rupture on Tues and first tweet ever!! <a href=\"https:\/\/t.co\/QFOpokctQR\">pic.twitter.com\/QFOpokctQR<\/a><\/p>\n<p>&mdash; Stephen Angster (@faultjumper) <a href=\"https:\/\/twitter.com\/faultjumper\/status\/1149441142586429440?ref_src=twsrc%5Etfw\">July 11, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Found our BIGGEST offset yet for the fault that caused the M7.1 earthquake. This channel is offset about 13 feet! <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrestearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrestearthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrest<\/a> <a href=\"https:\/\/t.co\/EQCh3Z9DBj\">pic.twitter.com\/EQCh3Z9DBj<\/a><\/p>\n<p>&mdash; Brian Olson (@mrbrianolson) <a href=\"https:\/\/twitter.com\/mrbrianolson\/status\/1149529660943818753?ref_src=twsrc%5Etfw\">July 12, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">An amazing week working with colleagues from <a href=\"https:\/\/twitter.com\/CalConservation?ref_src=twsrc%5Etfw\">@CalConservation<\/a> California Geological Survey and the <a href=\"https:\/\/twitter.com\/USGS?ref_src=twsrc%5Etfw\">@usgs<\/a> mapping ruptures from the earthquakes in Ridgecrest. Thanks to the residents who have been welcoming and the <a href=\"https:\/\/twitter.com\/USNavy?ref_src=twsrc%5Etfw\">@USNavy<\/a> for incredible logistical support. <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrestearthquakes?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrestearthquakes<\/a> <a href=\"https:\/\/t.co\/Yqs8yAZtLY\">pic.twitter.com\/Yqs8yAZtLY<\/a><\/p>\n<p>&mdash; Tim Dawson (@timblor) <a href=\"https:\/\/twitter.com\/timblor\/status\/1149566100549459969?ref_src=twsrc%5Etfw\">July 12, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">This animation shows preliminary results from precise relocation of the Ridgecrest foreshock sequence, up to the the time of occurrence of the M 7.1 mainshock. Full details at: <a href=\"https:\/\/t.co\/Gm3GuSPt0s\">https:\/\/t.co\/Gm3GuSPt0s<\/a> <a href=\"https:\/\/t.co\/RfIijTiHfu\">pic.twitter.com\/RfIijTiHfu<\/a><\/p>\n<p>&mdash; USGS (@USGS) <a href=\"https:\/\/twitter.com\/USGS\/status\/1149747754094272512?ref_src=twsrc%5Etfw\">July 12, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">A very preliminary fault slip model for <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a>, using data from GPS, <a href=\"https:\/\/twitter.com\/esa?ref_src=twsrc%5Etfw\">@esa<\/a> Sentinel-1, <a href=\"https:\/\/twitter.com\/ALOS2_JAXA?ref_src=twsrc%5Etfw\">@ALOS2_JAXA<\/a>, optical imagery from <a href=\"https:\/\/twitter.com\/planetlabs?ref_src=twsrc%5Etfw\">@planetlabs<\/a> by <a href=\"https:\/\/twitter.com\/Geo_GIF?ref_src=twsrc%5Etfw\">@Geo_GIF<\/a>. Model, surface displacement and Coulomb stress available at <a href=\"https:\/\/t.co\/SSyQaHdJYh\">https:\/\/t.co\/SSyQaHdJYh<\/a>. <a href=\"https:\/\/t.co\/TZ8PQop7cZ\">pic.twitter.com\/TZ8PQop7cZ<\/a><\/p>\n<p>&mdash; Xiaohua Xu (@XiaohuaXu1) <a href=\"https:\/\/twitter.com\/XiaohuaXu1\/status\/1149799965750751232?ref_src=twsrc%5Etfw\">July 12, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">CGS and USGS teams mapped fault offsets that were an order of magnitude less than yesterday\u2019s, but in someways much cleaner to measure. Here is a shrub dune left-laterally offset 30 cm by the July 4 M 6.4 <a href=\"https:\/\/t.co\/F7UH6f82An\">pic.twitter.com\/F7UH6f82An<\/a><\/p>\n<p>&mdash; Tim Dawson (@timblor) <a href=\"https:\/\/twitter.com\/timblor\/status\/1149912522461339649?ref_src=twsrc%5Etfw\">July 13, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Updated rupture map of <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> earthquake. Faults mapped from <a href=\"https:\/\/twitter.com\/planetlabs?ref_src=twsrc%5Etfw\">@Planetlabs<\/a> offsets, and Sentinel-1 wrapped and phase gradient. Juncture of Mw 6.4 and 7.1 is highly complex.<\/p>\n<p>Green = primary fault rupture<br \/>Red = secondary faults<br \/>Blue dots = aftershocks (SCSN) <a href=\"https:\/\/t.co\/N3TSO02GYA\">pic.twitter.com\/N3TSO02GYA<\/a><\/p>\n<p>&mdash; Chris Milliner (@Geo_GIF) <a href=\"https:\/\/twitter.com\/Geo_GIF\/status\/1149734567932129285?ref_src=twsrc%5Etfw\">July 12, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><br \/>\nThis one woke me up:<\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Today&#39;s M4.9 aftershock was recorded by a temporary seismometer at ~2 km epicentral distance.  It recorded a peak acceleration of 14%g.  Intensities in Ridgecrest imply accelerations in the same range, or maybe even higher locally. This illustrates an important point. <a href=\"https:\/\/t.co\/ruefagOhdT\">pic.twitter.com\/ruefagOhdT<\/a><\/p>\n<p>&mdash; Susan Hough (@SeismoSue) <a href=\"https:\/\/twitter.com\/SeismoSue\/status\/1149859201713242112?ref_src=twsrc%5Etfw\">July 13, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Headed home after a week working on response to <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a>. Impressive effort by all involved from <a href=\"https:\/\/twitter.com\/hashtag\/USGS?src=hash&amp;ref_src=twsrc%5Etfw\">#USGS<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/CGS?src=hash&amp;ref_src=twsrc%5Etfw\">#CGS<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/UNR?src=hash&amp;ref_src=twsrc%5Etfw\">#UNR<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/EERI?src=hash&amp;ref_src=twsrc%5Etfw\">#EERI<\/a> and many more. A few of my favorite photos: ~4 m offset dirt road, 108F temps, central part of M7.1 rupture with <a href=\"https:\/\/twitter.com\/timblor?ref_src=twsrc%5Etfw\">@timblor<\/a> and <a href=\"https:\/\/twitter.com\/chrisduross?ref_src=twsrc%5Etfw\">@chrisduross<\/a> for scale <a href=\"https:\/\/t.co\/B8fIfaNxti\">pic.twitter.com\/B8fIfaNxti<\/a><\/p>\n<p>&mdash; Ryan Gold (@runr447) <a href=\"https:\/\/twitter.com\/runr447\/status\/1150097810446045184?ref_src=twsrc%5Etfw\">July 13, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">&#39;NASA&#39;s ARIA Team Maps California Quake Damage&#39; news article from the <a href=\"https:\/\/twitter.com\/hashtag\/NASA_App?src=hash&amp;ref_src=twsrc%5Etfw\">#NASA_App<\/a> \u2066<a href=\"https:\/\/twitter.com\/NASAJPL?ref_src=twsrc%5Etfw\">@NASAJPL<\/a>\u2069  <a href=\"https:\/\/t.co\/Kyk34SmN6q\">https:\/\/t.co\/Kyk34SmN6q<\/a><\/p>\n<p>&mdash; Eric Fielding (@EricFielding) <a href=\"https:\/\/twitter.com\/EricFielding\/status\/1149884789647802368?ref_src=twsrc%5Etfw\">July 13, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Growing evidence for Garlock fault having very small triggered slip. Both ALOS-2 wrapped phase and Sentinel 1 aziumuthal gradient map show small slip for ~35 km alongfault. <a href=\"https:\/\/twitter.com\/XiaohuaXu1?ref_src=twsrc%5Etfw\">@XiaohuaXu1<\/a> <a href=\"https:\/\/t.co\/bKSbGmWO9U\">pic.twitter.com\/bKSbGmWO9U<\/a><\/p>\n<p>&mdash; Chris Milliner (@Geo_GIF) <a href=\"https:\/\/twitter.com\/Geo_GIF\/status\/1148961803579187202?ref_src=twsrc%5Etfw\">July 10, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">This <a href=\"https:\/\/twitter.com\/unvaco?ref_src=twsrc%5Etfw\">@UNVACO<\/a> map shows how GPS stations moved from just before to just after the <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a>. The arrows show the direction &amp; size of motion. This represents how much the ground moved at each site. The scale arrow in the lower left represents 100 mm, or 10 cm (~4 in). <a href=\"https:\/\/t.co\/tQzvNGugms\">pic.twitter.com\/tQzvNGugms<\/a><\/p>\n<p>&mdash; IRIS Earthquake Sci (@IRIS_EPO) <a href=\"https:\/\/twitter.com\/IRIS_EPO\/status\/1148208437911797760?ref_src=twsrc%5Etfw\">July 8, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">The possible fault sources of the <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrestearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrestearthquake<\/a> by  analytical solution combining  <a href=\"https:\/\/twitter.com\/hashtag\/sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#sentinel1<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/sentinel2?src=hash&amp;ref_src=twsrc%5Etfw\">#sentinel2<\/a> <a href=\"https:\/\/twitter.com\/UNAVCO?ref_src=twsrc%5Etfw\">@UNAVCO<\/a> gps and <a href=\"https:\/\/twitter.com\/USGS?ref_src=twsrc%5Etfw\">@USGS<\/a> faultlines data.<br \/>The path has just begun.<a href=\"https:\/\/twitter.com\/SimoneAtzori73?ref_src=twsrc%5Etfw\">@SimoneAtzori73<\/a> <a href=\"https:\/\/twitter.com\/maferp_13?ref_src=twsrc%5Etfw\">@maferp_13<\/a> <a href=\"https:\/\/twitter.com\/FraxInSAR?ref_src=twsrc%5Etfw\">@FraxInSAR<\/a> <a href=\"https:\/\/twitter.com\/EugenioSansosti?ref_src=twsrc%5Etfw\">@EugenioSansosti<\/a> <a href=\"https:\/\/t.co\/F34nIjfZKL\">pic.twitter.com\/F34nIjfZKL<\/a><\/p>\n<p>&mdash; Vincenzo De Novellis (@VDN75) <a href=\"https:\/\/twitter.com\/VDN75\/status\/1149927510748094464?ref_src=twsrc%5Etfw\">July 13, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Ground deformation after <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> earthquake using <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a> ascending dataset. <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/RIKEN?src=hash&amp;ref_src=twsrc%5Etfw\">#RIKEN<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/RIKEN_AIP?src=hash&amp;ref_src=twsrc%5Etfw\">#RIKEN_AIP<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#Earthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Deformation?src=hash&amp;ref_src=twsrc%5Etfw\">#Deformation<\/a> <a href=\"https:\/\/t.co\/EFQadAoaZ7\">pic.twitter.com\/EFQadAoaZ7<\/a><\/p>\n<p>&mdash; Sadra Karimzadeh (@Sadra_Krmz) <a href=\"https:\/\/twitter.com\/Sadra_Krmz\/status\/1149994528486514688?ref_src=twsrc%5Etfw\">July 13, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Why historical seismology? Some years ago <a href=\"https:\/\/twitter.com\/Kate6HTN?ref_src=twsrc%5Etfw\">@Kate6HTN<\/a> and I wrote a paper on the 1872 Owens Valley earthquake, presenting evidence that the rupture continued south of Lone Pine, to Haiwee. <a href=\"https:\/\/t.co\/VNND3HfniX\">pic.twitter.com\/VNND3HfniX<\/a><\/p>\n<p>&mdash; Susan Hough (@SeismoSue) <a href=\"https:\/\/twitter.com\/SeismoSue\/status\/1150263486221443073?ref_src=twsrc%5Etfw\">July 14, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">&quot;Scientists from the USGS and other organizations continue field work and analyses&quot;. Here is a release of the surface rupture map:<a href=\"https:\/\/t.co\/cC53bdzEQZ\">https:\/\/t.co\/cC53bdzEQZ<\/a> <a href=\"https:\/\/t.co\/tS3p5t9c6z\">pic.twitter.com\/tS3p5t9c6z<\/a><\/p>\n<p>&mdash; St\u00e9phane Baize (@stef92320) <a href=\"https:\/\/twitter.com\/stef92320\/status\/1150069219272396801?ref_src=twsrc%5Etfw\">July 13, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">More results using <a href=\"https:\/\/twitter.com\/ALOS2_JAXA?ref_src=twsrc%5Etfw\">@ALOS2_JAXA<\/a> data available on <a href=\"https:\/\/t.co\/SSyQaHdJYh\">https:\/\/t.co\/SSyQaHdJYh<\/a> . What really needed is the other look direction. Waiting for 16th Sentinel-1. Also check out the north west corner. That&#39;s central valley going down. <a href=\"https:\/\/t.co\/419xh9uJQi\">pic.twitter.com\/419xh9uJQi<\/a><\/p>\n<p>&mdash; Xiaohua Xu (@XiaohuaXu1) <a href=\"https:\/\/twitter.com\/XiaohuaXu1\/status\/1150258070859051009?ref_src=twsrc%5Etfw\">July 14, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Here it is. With <a href=\"https:\/\/twitter.com\/YorgosBz?ref_src=twsrc%5Etfw\">@YorgosBz<\/a> and <a href=\"https:\/\/twitter.com\/ESM_db?ref_src=twsrc%5Etfw\">@ESM_db<\/a> we&#39;ve been looking at the (possibly) impulsive features of ground motions from the <a href=\"https:\/\/twitter.com\/hashtag\/californiaearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#californiaearthquake<\/a>, as identified by Baker&#39;s 2007 algorithm. Polygon is source projection, E is epicenter. (Note: just preliminary, no conclusions yet.) <a href=\"https:\/\/t.co\/4vucfl8nuV\">pic.twitter.com\/4vucfl8nuV<\/a><\/p>\n<p>&mdash; iunio iervolino (@iuniervo) <a href=\"https:\/\/twitter.com\/iuniervo\/status\/1150318805543018496?ref_src=twsrc%5Etfw\">July 14, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Last 12 days on a seismogram ~15km S of <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> showing:<a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Trona?src=hash&amp;ref_src=twsrc%5Etfw\">#Trona<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a><br \/>  M6.4 2019-07-04 (green)<br \/>  M7 2019-07-06 (black)<br \/>  &#8230;and many, many aftershocks<a href=\"https:\/\/twitter.com\/hashtag\/Australia?src=hash&amp;ref_src=twsrc%5Etfw\">#Australia<\/a><br \/>  M6.6 2019-07-14 (blue, lower left, 06h)<a href=\"https:\/\/twitter.com\/hashtag\/Indonesia?src=hash&amp;ref_src=twsrc%5Etfw\">#Indonesia<\/a><br \/>  M7.3 2019-07-14 (blue, lower right) <a href=\"https:\/\/t.co\/vxnqPB8zd6\">pic.twitter.com\/vxnqPB8zd6<\/a><\/p>\n<p>&mdash; Anthony Lomax &#x1f30d;&#x1f1ea;&#x1f1fa; (@ALomaxNet) <a href=\"https:\/\/twitter.com\/ALomaxNet\/status\/1150662687375990784?ref_src=twsrc%5Etfw\">July 15, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Many are asking *why* Ridgecrest didn&#39;t suffer more damage from the M7.1 earthquake. I noticed the peak ground accelerations measured IN Ridgecrest were actually LESS for the M7.1 despite it releasing 11x more energy. <a href=\"https:\/\/t.co\/UyUGVYyNh0\">pic.twitter.com\/UyUGVYyNh0<\/a><\/p>\n<p>&mdash; Brian Olson (@mrbrianolson) <a href=\"https:\/\/twitter.com\/mrbrianolson\/status\/1150560021953970178?ref_src=twsrc%5Etfw\">July 15, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Wanted to say I was honored to join the team collecting location &amp; offset data from recent Ridgecrest earthquakes. From huddling under tables w\/ <a href=\"https:\/\/twitter.com\/kwhudnut?ref_src=twsrc%5Etfw\">@kwhudnut<\/a> &amp; <a href=\"https:\/\/twitter.com\/earthquakemom?ref_src=twsrc%5Etfw\">@earthquakemom<\/a> during the M7.1 to sweating profusely on the dry lake bed, I valued all of it. <a href=\"https:\/\/twitter.com\/hashtag\/TeamCGS?src=hash&amp;ref_src=twsrc%5Etfw\">#TeamCGS<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/TeamUSGS?src=hash&amp;ref_src=twsrc%5Etfw\">#TeamUSGS<\/a> <a href=\"https:\/\/t.co\/Yxzf8yrQ15\">pic.twitter.com\/Yxzf8yrQ15<\/a><\/p>\n<p>&mdash; Brian Olson (@mrbrianolson) <a href=\"https:\/\/twitter.com\/mrbrianolson\/status\/1150530246879264769?ref_src=twsrc%5Etfw\">July 14, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Another preliminary fault slip model for <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a>, using data from <a href=\"https:\/\/twitter.com\/esa?ref_src=twsrc%5Etfw\">@esa<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a> and <a href=\"https:\/\/twitter.com\/UNAVCO?ref_src=twsrc%5Etfw\">@UNAVCO<\/a> GPS. <a href=\"https:\/\/twitter.com\/USGS?ref_src=twsrc%5Etfw\">@USGS<\/a> faultlines (black) &amp; <a href=\"https:\/\/twitter.com\/IRIS_EPO?ref_src=twsrc%5Etfw\">@IRIS_EPO<\/a> earthquakes distribution (red) are also shown; the darkest blue corresponds to ~5.5 m slip value.<a href=\"https:\/\/twitter.com\/SimoneAtzori73?ref_src=twsrc%5Etfw\">@SimoneAtzori73<\/a> <a href=\"https:\/\/twitter.com\/EricFielding?ref_src=twsrc%5Etfw\">@EricFielding<\/a> <a href=\"https:\/\/t.co\/gSTzlTDD4X\">pic.twitter.com\/gSTzlTDD4X<\/a><\/p>\n<p>&mdash; Vincenzo De Novellis (@VDN75) <a href=\"https:\/\/twitter.com\/VDN75\/status\/1150897348530323456?ref_src=twsrc%5Etfw\">July 15, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Well, at AGU it is going to be called:<br \/>&quot;S041 &#8211; The 2019 M6.4 Searles Valley and M7.1 Ridgecrest Earthquakes&quot;<br \/>Some improvement&#8230;<a href=\"https:\/\/t.co\/adGovA3GyP\">https:\/\/t.co\/adGovA3GyP<\/a><\/p>\n<p>&mdash; Anthony Lomax &#x1f30d;&#x1f1ea;&#x1f1fa; (@ALomaxNet) <a href=\"https:\/\/twitter.com\/ALomaxNet\/status\/1151149056250564608?ref_src=twsrc%5Etfw\">July 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Another phase gradient image from the M7.1 Hector Mine Earthquake. Not as many conjugate fractures as the M7.1 in Ridgecrest. <a href=\"https:\/\/t.co\/pwTr8vEIlI\">pic.twitter.com\/pwTr8vEIlI<\/a><\/p>\n<p>&mdash; David Sandwell (@sandwell_david) <a href=\"https:\/\/twitter.com\/sandwell_david\/status\/1150543619926843393?ref_src=twsrc%5Etfw\">July 14, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">And it&#39;s official, or very close to it: the earthquake sequence formerly known as Searles Valley will henceforth be known, in official circles as well as the media, as the 2019 Ridgecrest sequence. <a href=\"https:\/\/t.co\/cWICiSZ8Ry\">pic.twitter.com\/cWICiSZ8Ry<\/a><\/p>\n<p>&mdash; Susan Hough (@SeismoSue) <a href=\"https:\/\/twitter.com\/SeismoSue\/status\/1151171650198491136?ref_src=twsrc%5Etfw\">July 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Earthquake now officially renamed! <a href=\"https:\/\/t.co\/vNwjzQob3z\">pic.twitter.com\/vNwjzQob3z<\/a><\/p>\n<p>&mdash; Susan Hough (@SeismoSue) <a href=\"https:\/\/twitter.com\/SeismoSue\/status\/1151208835400552449?ref_src=twsrc%5Etfw\">July 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Post-seismic slip (~2-6cm) along the fault rupture of  both Mw6.4 &amp; Mw 7.1 <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquakes?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquakes<\/a>, as hinted by <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/InSAR?src=hash&amp;ref_src=twsrc%5Etfw\">#InSAR<\/a> for the time interval June 10 &#8211; June 16. <a href=\"https:\/\/t.co\/71oFb0Z4A4\">pic.twitter.com\/71oFb0Z4A4<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151231860414078976?ref_src=twsrc%5Etfw\">July 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Descending interferogram <a href=\"https:\/\/twitter.com\/hashtag\/InSAR?src=hash&amp;ref_src=twsrc%5Etfw\">#InSAR<\/a> from <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a> data, <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> sequence. Rupture trace from previous InSAR &amp; optical data. July 4 &#8211; July 16. Processed with DIAPASON at <a href=\"https:\/\/twitter.com\/esa_gep?ref_src=twsrc%5Etfw\">@esa_gep<\/a> <a href=\"https:\/\/t.co\/VThrEHNqj9\">pic.twitter.com\/VThrEHNqj9<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151255038536404994?ref_src=twsrc%5Etfw\">July 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-conversation=\"none\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Unwrapped (LOS displacement) descending interferogram <a href=\"https:\/\/twitter.com\/hashtag\/InSAR?src=hash&amp;ref_src=twsrc%5Etfw\">#InSAR<\/a> from <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a> data, <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a>  <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> sequence. Rupture trace from previous InSAR &amp; optical  data. July 4 &#8211; July 16. Processed with DIAPASON at <a href=\"https:\/\/twitter.com\/esa_gep?ref_src=twsrc%5Etfw\">@esa_gep<\/a> <a href=\"https:\/\/t.co\/Qs8DOuUjix\">pic.twitter.com\/Qs8DOuUjix<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151255043556950017?ref_src=twsrc%5Etfw\">July 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">A new phase gradient map from <a href=\"https:\/\/twitter.com\/Sentinel1a?ref_src=twsrc%5Etfw\">@Sentinel1a<\/a> descending track 71 for <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrestquake?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrestquake<\/a>. Data quality is just better. And a screen shot that shows sharp creep on the Garlock. Soon these will be available on <a href=\"https:\/\/t.co\/sUnZG76gzM\">https:\/\/t.co\/sUnZG76gzM<\/a>. <a href=\"https:\/\/t.co\/ovIzBTgS9p\">pic.twitter.com\/ovIzBTgS9p<\/a><\/p>\n<p>&mdash; Xiaohua Xu (@XiaohuaXu1) <a href=\"https:\/\/twitter.com\/XiaohuaXu1\/status\/1151287255685726208?ref_src=twsrc%5Etfw\">July 17, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-conversation=\"none\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Garlock Fault <a href=\"https:\/\/twitter.com\/AmauryVallage?ref_src=twsrc%5Etfw\">@AmauryVallage<\/a> <a href=\"https:\/\/t.co\/6MlmdcWouK\">pic.twitter.com\/6MlmdcWouK<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151257169079222272?ref_src=twsrc%5Etfw\">July 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Just released: 2019 Ridgecrest Earthquake Sequence: July 4, 2019\u2013July 16, 2019. Download or view a text version at <a href=\"https:\/\/t.co\/C864c132ol\">https:\/\/t.co\/C864c132ol<\/a> <a href=\"https:\/\/t.co\/jHRm0e0fLp\">pic.twitter.com\/jHRm0e0fLp<\/a><\/p>\n<p>&mdash; USGS (@USGS) <a href=\"https:\/\/twitter.com\/USGS\/status\/1151306571290464256?ref_src=twsrc%5Etfw\">July 17, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">And the ascending pair from <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel1?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel1<\/a>, <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrestearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrestearthquake<\/a>. Gradient render from unwrapped LOS displacement map (higher quality 20m  from SNAP). Processing in <a href=\"https:\/\/twitter.com\/esa_gep?ref_src=twsrc%5Etfw\">@esa_gep<\/a>. <a href=\"https:\/\/t.co\/IzaHeceXUU\">pic.twitter.com\/IzaHeceXUU<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151467589996032000?ref_src=twsrc%5Etfw\">July 17, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Some more animations from <a href=\"https:\/\/twitter.com\/hashtag\/Sentinel2?src=hash&amp;ref_src=twsrc%5Etfw\">#Sentinel2<\/a> imagery, sgowing possible  liquefaction\/lateral-spreading or surface distrurbance in <a href=\"https:\/\/twitter.com\/hashtag\/Searles?src=hash&amp;ref_src=twsrc%5Etfw\">#Searles<\/a> Lake  from the Mw 7.1 <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> 2\/2 <a href=\"https:\/\/t.co\/1MXynzpvQR\">pic.twitter.com\/1MXynzpvQR<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151452047360872450?ref_src=twsrc%5Etfw\">July 17, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Building on our previous InSAR result across the <a href=\"https:\/\/twitter.com\/hashtag\/californiaearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#californiaearthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> we&#39;ve been able to determine the East-West and Vertical components of movement using two opposing <a href=\"https:\/\/twitter.com\/CopernicusEU?ref_src=twsrc%5Etfw\">@CopernicusEU<\/a> Sentinel-1 lines-of-sight. Over 90 cm of westward movement is detected! <a href=\"https:\/\/t.co\/LcIMMk9HkI\">pic.twitter.com\/LcIMMk9HkI<\/a><\/p>\n<p>&mdash; NPA SatelliteMapping (@CGGNPA) <a href=\"https:\/\/twitter.com\/CGGNPA\/status\/1151448516176297984?ref_src=twsrc%5Etfw\">July 17, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Instrumental ground motion observations of the <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrestearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrestearthquake<\/a> sequence. Portable real-time stations get us good close in strong-motion measurements of the Mw 4.9 and other aftershocks. <a href=\"https:\/\/twitter.com\/usgs_seismic?ref_src=twsrc%5Etfw\">@usgs_seismic<\/a> <a href=\"https:\/\/twitter.com\/USGS?ref_src=twsrc%5Etfw\">@usgs<\/a> <a href=\"https:\/\/twitter.com\/GeoGinger?ref_src=twsrc%5Etfw\">@GeoGinger<\/a> <a href=\"https:\/\/t.co\/o1Eka8K1lD\">pic.twitter.com\/o1Eka8K1lD<\/a><\/p>\n<p>&mdash; Daniel McNamara (@DanielEMcNamara) <a href=\"https:\/\/twitter.com\/DanielEMcNamara\/status\/1151642637033775104?ref_src=twsrc%5Etfw\">July 17, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Came across an elongate cobble that was FLIPPED over by the earthquake shaking. This is fairly flat ground, no slope for gravity assistance. Suggests some pretty strong shaking in this area south of Hwy 178. <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#ridgecrest<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> <a href=\"https:\/\/t.co\/l1rDnFogYQ\">pic.twitter.com\/l1rDnFogYQ<\/a><\/p>\n<p>&mdash; Brian Olson (@mrbrianolson) <a href=\"https:\/\/twitter.com\/mrbrianolson\/status\/1151712670393012227?ref_src=twsrc%5Etfw\">July 18, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Complex and detailed pattern of co-seismic ruptures for the <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> sequence. Red lines are primary &amp; secondary surface ruptures, together with small triggered ruptures away from main faults. Previously mapped Quaternary Faults with yellow, for comparison. <a href=\"https:\/\/t.co\/wZi8H9i78O\">pic.twitter.com\/wZi8H9i78O<\/a><\/p>\n<p>&mdash; Sotiris Valkaniotis (@SotisValkan) <a href=\"https:\/\/twitter.com\/SotisValkan\/status\/1151831167928360960?ref_src=twsrc%5Etfw\">July 18, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Shaken, not stirred! We observed this strong ground motion indicator of a toppled tufa pile along the SW strand of the Mw 7.1 Ridgecrest rupture. These tufa piles are least 14,000 years old and have been thru many regional EQs, but one decided to fall now! James Dolan for scale. <a href=\"https:\/\/t.co\/KcyE4OAnKs\">pic.twitter.com\/KcyE4OAnKs<\/a><\/p>\n<p>&mdash; Alex Hatem (@pride_of_lowell) <a href=\"https:\/\/twitter.com\/pride_of_lowell\/status\/1151870440656142337?ref_src=twsrc%5Etfw\">July 18, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">These before &amp; after <a href=\"https:\/\/twitter.com\/hashtag\/Landsat?src=hash&amp;ref_src=twsrc%5Etfw\">#Landsat<\/a> panchromatic band images show a surface rupture near the epicenter of the <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> 7.1 <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a>. <br \/>Visit <a href=\"https:\/\/t.co\/umhIv4gJkU\">https:\/\/t.co\/umhIv4gJkU<\/a> for more information about the earthquake <a href=\"https:\/\/t.co\/vxCY9663om\">pic.twitter.com\/vxCY9663om<\/a><\/p>\n<p>&mdash; USGS Landsat Program (@USGSLandsat) <a href=\"https:\/\/twitter.com\/USGSLandsat\/status\/1151929633287393280?ref_src=twsrc%5Etfw\">July 18, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Preliminary fault slip distribution for 7.1 <a href=\"https:\/\/twitter.com\/hashtag\/Ridgecrest?src=hash&amp;ref_src=twsrc%5Etfw\">#Ridgecrest<\/a> earthquake measured from pixel tracking of Sentinel-2 optical images. Rupture shows compact slip asperity near epicenter, with max. being ~4 m, consistent with field observations. <a href=\"https:\/\/t.co\/yGQ1usV2DQ\">pic.twitter.com\/yGQ1usV2DQ<\/a><\/p>\n<p>&mdash; Chris Milliner (@Geo_GIF) <a href=\"https:\/\/twitter.com\/Geo_GIF\/status\/1151956330682277889?ref_src=twsrc%5Etfw\">July 18, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Preliminary rupture models for M6.4 and M7.1 by joint inversions of strong-motion, GPS, and teleseismic. Seems possible that it could have slipped twice. <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/t.co\/jUYE8hUwsE\">pic.twitter.com\/jUYE8hUwsE<\/a><\/p>\n<p>&mdash; Chengli Liu (@chengli_liu) <a href=\"https:\/\/twitter.com\/chengli_liu\/status\/1150809113351208962?ref_src=twsrc%5Etfw\">July 15, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><br \/>\nQuite possibly the best animations on this sequence.<\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">How Two Big Earthquakes Triggered 16,000 More in Southern California &#8211; The New York Times. Love the animations! \u2066<a href=\"https:\/\/twitter.com\/nytimes?ref_src=twsrc%5Etfw\">@nytimes<\/a>\u2069  <a href=\"https:\/\/t.co\/qL4A5cPUb7\">https:\/\/t.co\/qL4A5cPUb7<\/a><\/p>\n<p>&mdash; Susan Hough (@SeismoSue) <a href=\"https:\/\/twitter.com\/SeismoSue\/status\/1152216133820268545?ref_src=twsrc%5Etfw\">July 19, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">The Geotechnical Extreme Events Reconnaissance (GEER) Association report for the Ridgecrest Earthquake Sequence is now online. <a href=\"https:\/\/twitter.com\/hashtag\/RidgecrestEarthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#RidgecrestEarthquake<\/a> <a href=\"https:\/\/twitter.com\/USGSBigQuakes?ref_src=twsrc%5Etfw\">@USGSBigQuakes<\/a> <a href=\"https:\/\/twitter.com\/CalConservation?ref_src=twsrc%5Etfw\">@CalConservation<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/CAgeologicalSurvey?src=hash&amp;ref_src=twsrc%5Etfw\">#CAgeologicalSurvey<\/a> and <a href=\"https:\/\/twitter.com\/UCLAengineering?ref_src=twsrc%5Etfw\">@UCLAengineering<\/a> collaboration w\/<a href=\"https:\/\/twitter.com\/USNavy?ref_src=twsrc%5Etfw\">@USNavy<\/a> <a href=\"https:\/\/t.co\/OQwenwYM2x\">https:\/\/t.co\/OQwenwYM2x<\/a> <a href=\"https:\/\/t.co\/zBlkAaksMR\">pic.twitter.com\/zBlkAaksMR<\/a><\/p>\n<p>&mdash; Jason &quot;Jay&quot; R. Patton (@patton_cascadia) <a href=\"https:\/\/twitter.com\/patton_cascadia\/status\/1152434523247796225?ref_src=twsrc%5Etfw\">July 20, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/ul>\n<ul>\n<h2><strong><font color=\"orange\">References:<\/font><\/strong><\/h2>\n<li>Amos, C.B., Bwonlee, S.J., Hood, D.H., Fisher, G.B., B\u00fcrgmann, R., Renne, P.R., and Jayko, A.S.,  2013. Chronology of tectonic, geomorphic, and volcanic interactions and the tempo of fault slip near Little Lake, California in GSA Bulletin, v. 125, no. 7-8, <a href=\"http:\/\/10.1130\/B30803.1\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1130\/B30803.1<\/a><\/li>\n<li>Bakun, W.H., Ralph A. Haugerud, Margaret G. Hopper, Ruth S. Ludwin, 2002. The December 1872 Washington State Earthquake in BSSA, v. 92, no. 8., <a href=\"https:\/\/doi.org\/10.1785\/0120010274\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1785\/0120010274<\/a><\/li>\n<li>Brocher, T., Margaret G. Hopper, S.T. Ted Algermissen, David M. Perkins, Stanley R. Brockman, and Edouard P. Arnold, 2048. Aftershocks, Earthquake Effects, and the Location of the Large 14 December 1872 Earthquake near Entiat, Central Washington in BSSA, v. 108, no. 1., <a href=\"https:\/\/doi.org\/10.1785\/0120170224\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1785\/0120170224<\/a><\/li>\n<li>Frankel, K.L., Glazner, A.F., Kirby, E., Monastero, F.C., Strane, M.D., Oskin, M.E., Unruh, J.R., Walker, J.D., Anandakrishnan, S., Bartley, J.M., Coleman, D.S., Dolan, J.F., Finkel, R.C., Greene, D., Kylander-Clark, A., Morrero, S., Owen, L.A., and Phillips, F., 2008, Active tectonics of the eastern California shear zone, in Duebendorfer, E.M., and Smith, E.I., eds., Field Guide to Plutons, Volcanoes, Faults, Reefs, Dinosaurs, and Possible Glaciation in Selected Areas of Arizona, California, and Nevada: Geological Society of America Field Guide 11, p. 43\u201381, doi: 10.1130\/2008.fl d011(03).<\/li>\n<li>Frisch, W., Meschede, M., Blakey, R., 2011. Plate Tectonics, Springer-Verlag, London, 213 pp.<\/li>\n<li>Hayes, G., 2018, Slab2 &#8211; A Comprehensive Subduction Zone Geometry Model: U.S. Geological Survey data release, <a href=\"https:\/\/doi.org\/10.5066\/F7PV6JNV\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.5066\/F7PV6JNV<\/a>.<\/li>\n<li>Holt, W. E., C. Kreemer, A. J. Haines, L. Estey, C. Meertens, G. Blewitt, and D. Lavallee (2005), Project helps constrain continental dynamics and seismic hazards, Eos Trans. AGU, 86(41), 383\u2013387, , <a href=\"https:\/\/doi.org\/10.1029\/2005EO410002\" rel=\"noopener noreferrer\" target=\"_blank\"> https:\/\/doi.org\/10.1029\/2005EO410002<\/a>. \/li>\n<li>Kreemer, C., J. Haines, W. Holt, G. Blewitt, and D. Lavallee (2000), On the determination of a global strain rate model, Geophys. J. Int., 52(10), 765\u2013770. <\/li>\n<li>Kreemer, C., W. E. Holt, and A. J. Haines (2003), An integrated global model of present-day plate motions and plate boundary deformation, Geophys. J. Int., 154(1), 8\u201334, , <a href=\"https:\/\/doi.org\/10.1046\/j.1365-246X.2003.01917.x\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1046\/j.1365-246X.2003.01917.x<\/a>. <\/li>\n<li>Kreemer, C., G. Blewitt, E.C. Klein, 2014. A geodetic plate motion and Global Strain Rate Model in Geochemistry, Geophysics, Geosystems, v. 15, p. 3849-3889, <a href=\"https:\/\/doi.org\/10.1002\/2014GC005407\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1002\/2014GC005407<\/a>.<\/li>\n<li>McAuliffe, L. J., Dolan, J. F., Kirby, E., Rollins, C., Haravitch, B., Alm, S., &#038; Rittenour, T. M., 2013. Paleoseismology of the southern Panamint Valley fault: Implications for regional earthquake occurrence and seismic hazard in southern California. Journal of Geophysical Research: Solid Earth, 118, 5126-5146, <a href=\"https:\/\/doi.org\/10.1029\/jgrb.50359\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1029\/jgrb.50359<\/a>.<\/li>\n<li>Meyer, B., Saltus, R., Chulliat, a., 2017. <a href=\"https:\/\/www.ngdc.noaa.gov\/geomag\/emag2.html\" rel=\"noopener noreferrer\" target=\"_blank\">EMAG2: Earth Magnetic Anomaly Grid (2-arc-minute resolution) Version <\/a>3. National Centers for Environmental Information, NOAA. Model. <a href=\"https:\/\/doi.org\/10.7289\/V5H70CVX\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.7289\/V5H70CVX<\/a><\/li>\n<li>M\u00fcller, R.D., Sdrolias, M., Gaina, C. and Roest, W.R., 2008, <a href=\"http:\/\/www.earthbyte.org\/people\/dietmar\/Pdf\/Muller_etal_age_rate_asym_G3_2008.pdf\" rel=\"noopener noreferrer\" target=\"_blank\">Age spreading rates and spreading asymmetry of the world&#8217;s ocean crust<\/a> in Geochemistry, Geophysics, Geosystems, 9, Q04006, <a href=\"https:\/\/doi.org\/10.1029\/2007GC001743\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1029\/2007GC001743<\/a><\/li>\n<li>Stein, R.S., Earthquake Conversations, Scientific American, vol. 288, 72-79, January issue, 2003. Republished in: Our Ever Changing Earth, Scientific American, Special Edition, v. 15 (2), 82-89, 2005.<\/li>\n<li>Toda, S., Stein, R. S., Richards-Dinger, K. &#038; Bozkurt, S. Forecasting the evolution of seismicity in southern California: Animations built on earthquake stress transfer. J. Geophys. Res. 110, B05S16 (2005) <a href=\"https:\/\/doi.org\/10.1029\/2004JB003415\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/doi.org\/10.1029\/2004JB003415<\/a><\/li>\n<\/ul>\n<h2><font color=\"orange\"><strong>Return to the <a href=\"http:\/\/earthjay.com\/?page_id=3218\">Earthquake Reports page<\/a>.<\/font><\/strong><\/h2>\n<ul>\n<li>Sorted by <a href=\"http:\/\/earthjay.com\/?page_id=3219\">Magnitude<\/a><\/li>\n<li>Sorted by <a href=\"http:\/\/earthjay.com\/?page_id=3220\">Year<\/a><\/li>\n<li>Sorted By <a href=\"http:\/\/earthjay.com\/?page_id=3226\">Region<\/a><\/li>\n<\/ul>\n<p><!-- time to complete: 11.75 hours -- 10:00 - 21:45--><br \/>\n<!--\n\u00b0\n\u2265\n\u00d1\n\u00f6\n\u00e1\n\u00b1\n\u00fc\n\n\n<ul>\n\t\n\n<li><\/li>\n\n\n\n\n<blockquote>\n<\/blockquote>\n\n\n<\/ul>\n\n\nhttps:\/\/response.scec.org\/node\/395\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\">\nSummary of Reports for the Ridgecrest Earthquake Sequence The original Earthquake Report for this widely felt sequence is here. The update #1 Earthquake Report for this widely felt sequence is here. The update #2 Earthquake Report for this widely felt&hellip;\n<\/div>\n<div class=\"link-more\"><a href=\"https:\/\/earthjay.com\/?p=8806\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &ldquo;Earthquake Report: Ridgecrest Update #2&rdquo;<\/span>&hellip;<\/a><\/div>\n","protected":false},"author":3,"featured_media":8814,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[5,6,7,27,31,33],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/earthjay.com\/wp-content\/uploads\/2019\/07\/20190705_ridgecrest_interpretation_update_shade_20190718-scaled.jpg","_links":{"self":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/8806"}],"collection":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8806"}],"version-history":[{"count":0,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/8806\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/media\/8814"}],"wp:attachment":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}