{"id":7193,"date":"2018-02-26T13:21:04","date_gmt":"2018-02-26T21:21:04","guid":{"rendered":"http:\/\/earthjay.com\/?p=7193"},"modified":"2024-02-26T18:38:55","modified_gmt":"2024-02-26T18:38:55","slug":"earthquake-report-papua-new-guinea-update-1","status":"publish","type":"post","link":"https:\/\/earthjay.com\/?p=7193","title":{"rendered":"Earthquake Report: Papua New Guinea: Update #1"},"content":{"rendered":"<p>The aftershocks are still coming in! We can use these aftershocks to define where the fault may have slipped during this M 7.5 earthquake. As I mentioned <a href=\"http:\/\/earthjay.com\/?p=7157\" rel=\"noopener\" target=\"_blank\">yesterday in the original report<\/a>, it turns out the fault dimension matches pretty well with empirical relations between fault length and magnitude from Wells and Coppersmith (1994).<\/p>\n<p>The mapped faults in the region, as well as interpreted seismic lines, show an imbricate fold and thrust belt that dominates the geomorphology here (as well as some volcanoes, which are probably related to the slab gap produced by crust delamination; see Cloos et al., 2005 for more on this). I found a fault data set and include this in the aftershock update interpretive poster (from the Coordinating Committee for Geoscience Programmes in East and Southeast Asia, <a href=\"http:\/\/www.ccop.or.th\/\" rel=\"noopener\" target=\"_blank\">CCOP<\/a>).<\/p>\n<p>I initially thought that this M 7.5 earthquake was on a fault in the Papuan Fold and Thrust Belt (PFTB). Mark Allen pointed out on twitter that the ~35km hypocentral depth is probably too deep to be on one of these &#8220;thin skinned&#8221; faults (see Social Media below). Abers and McCaffrey (1988) used focal mechanism data to hypothesize that there are deeper crustal faults that are also capable of generating the earthquakes in this region. So, I now align myself with this hypothesis (that the M 7.5 slipped on a crustal fault, beneath the thin skin deformation associated with the PFTB. (thanks Mark! I had downloaded the Abers paper but had not digested it fully.)<\/p>\n<h2><font color=\"orange\">Below is my interpretive poster for this earthquake<\/font><\/h2>\n<p>I plot the seismicity from the past month, with color representing depth and diameter representing magnitude (see legend).<br \/>\nI plot the USGS fault plane solutions (moment tensors in blue and focal mechanisms in orange) for the M 7.5 earthquake, in addition to some relevant historic earthquakes.<\/p>\n<ul>\n<li>I placed a moment tensor \/ focal mechanism legend on the poster. There is more material from the USGS web sites about <a href=\"http:\/\/earthquake.usgs.gov\/learn\/glossary\/?term=moment%20tensor\" target=\"_blank\" rel=\"noopener\">moment tensors<\/a> and <a href=\"http:\/\/earthquake.usgs.gov\/learn\/topics\/beachball.php\" target=\"_blank\" rel=\"noopener\">focal mechanisms<\/a> (the beach ball symbols). Both moment tensors and focal mechanisms are solutions to seismologic data that reveal two possible interpretations for fault orientation and sense of motion. One must use other information, like the regional tectonics, to interpret which of the two possibilities is more likely. <\/li>\n<li>I also include the shaking intensity contours on the map. These use the Modified Mercalli Intensity Scale (MMI; see the legend on the map). This is based upon a computer model estimate of ground motions, different from the &#8220;Did You Feel It?&#8221; estimate of ground motions that is actually based on real observations. The MMI is a qualitative measure of shaking intensity. More on the MMI scale can be found <a href=\"http:\/\/earthquake.usgs.gov\/learn\/topics\/mercalli.php\" target=\"_blank\" rel=\"noopener\">here<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Mercalli_intensity_scale\" target=\"_blank\" rel=\"noopener\">here<\/a>. This is based upon a computer model estimate of ground motions, different from the &#8220;Did You Feel It?&#8221; estimate of ground motions that is actually based on real observations.<\/li>\n<li>I include the slab contours plotted (<a href=\"http:\/\/www.agu.org\/pubs\/crossref\/2012\/2011JB008524.shtml\" target=\"_blank\" rel=\"noopener\">Hayes et al., 2012<\/a>), which are contours that represent the depth to the subduction zone fault. These are mostly based upon seismicity. The depths of the earthquakes have considerable error and do not all occur along the subduction zone faults, so these slab contours are simply the best estimate for the location of the fault.<\/li>\n<\/ul>\n<ul>\n<li>\n<h3><strong>I include some inset figures.<\/strong><\/h3>\n<\/li>\n<li>In the upper right corner is a general overview of the plate boundaries and mapped faults in the region. I place a blue star in the general location of the M 7.5 epicenter. The fault lines on this figure also come from CCOP.<\/li>\n<li>In the lower right corner is a plot showing vertical land motion for GPS sites along a north-south profile. Basically, this shows that the sites north of the FTB are currently uplifting at about 5 mm.yr and the sites north of the Bewani fault zone are uplifting an additional 10 mm\/yr. This means that the crustal shortening associated with the collision of Australia with the Pacific\/Caroline plates is partly being accumulated as elastic strain in the crust and is localized on these fault systems. While this profile is several tens of kilometers to the west of the M 7.5, this process is likely also happening where the M 7.5 occurred.<\/li>\n<li>On the left are three figures from Abers and McCaffrey (1988).<\/li>\n<ul>\n<li>The upper panel shows the extent of a portion of their analysis that is cogent for the M 7.5 sequence. The extent of this box is also outlined in a dashed yellow rectangle on the main map. The blue star represents the general location of the M 7.5 earthquake. There are no backthrusts mapped on this figure (the hypothesis for the M 7.5 source fault promoted in my original report and on social media).<\/li>\n<li>This is a north-south cross section showing the focal mechanisms for 3 of the earthquakes in the map. This shows a south vergent fault as a possible source for the M ~5.x earthquakes studied by Abers and McCaffrey (1988). I am starting to favor an interpretation that the M 7.5 fault is south vergent.<\/li>\n<li>The lowest panel shows the interpretation from Abers that these deeper crustal faults are responsible for the seismicity they studied (and I thank mark again that I may posit that these faults are responsible for the current seismicity).<\/li>\n<\/ul>\n<\/ul>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_aftershocks_interpretation.pdf\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_aftershocks_interpretation.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<ul>\n<li>Here is the original interpretive poster from my initial report here.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_interpretation_EQGTE_65.pdf\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_interpretation_EQGTE_65.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<li>The same map without historic seismicity.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_interpretation.pdf\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_interpretation.jpg\" width=\"100%\" alt=\"\" \/><\/a>\n<\/ul>\n<h2><strong><font color=\"orange\">Some Relevant Discussion and Figures<\/font><\/strong><\/h2>\n<ul>\n<li>Here is the tectonic map from Loulali et al. (2015).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/Koulali_etal_2015_gps_kinematics_PNG_fig_01.JPG\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/Koulali_etal_2015_gps_kinematics_PNG_fig_01.JPG\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nTectonic setting of the Papua New Guinea region. Topography and bathymetry are from SRTM(http:\/\/topex.ucsd.edu\/www_html\/srtm30_plus.html). Faults are mostly from the East and Southeast Asia (CCOP) 1:2000000 geological map (downloaded from http:\/\/www.orrbodies.com\/resources\/item\/orr0052). AFTB, Aure Fold-and-Thrust Belt; OSZF, Owen Stainly fault zone; GF, Gogol fault; BTFZ, Bewani-Torricelli fault zone; RMFZ, Ramu-Markham fault zone; BSSL, Bismarck Sea Seismic Lineation.\n<\/p><\/blockquote>\n<\/ul>\n<ul>\n<li>Here is a map from Abers and McCaffrey (1988) that shows all the earthquakes included in their study (and the focal mechanisms). Inset &#8220;a&#8221; is the region shown on the aftershock poster above.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/abers_mccaffrey_1988_deformation_new_guinea_fold_thrust_belt_fig_02.JPG\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/abers_mccaffrey_1988_deformation_new_guinea_fold_thrust_belt_fig_02.JPG\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nMap of focal mechanisms determined here, locations of cross sections in Figure 11, and shallow seismicity. Focal mechanisms are shown as lower hemisphere projections with the compressional quadrants shaded, and the P and T axes shown as solid and open circles, respectively. The sizes of the focal spheres are scaled to log (MO), according to the scale in the upper right, and are labeled by the event numbers in Table 1. Seismicity is from the ISC catalog, 1964-1984, and includes all events listed as being shallower than 70 km recorded by 25 or more stations, with M b \u2022 5.0, and with standard deviations in latitude, longitude, or depth each not exceeding 20 km. Inset in lower left shows all large (M \u2022 7.0), shallow (! 70 km) earthquakes in the period 1900-1985, from the catalog compiled by Everingham [1974] for events before 1971 and from Ganse and Nelson [1981, with supplement] for more recent events. Faults are labelled on Figure 1.\n<\/p><\/blockquote>\n<li>Here are all the 3 cross sections from Abers and McCaffrey (1988). The upper section is a and the lower section is c (from the above map).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/abers_mccaffrey_1988_deformation_new_guinea_fold_thrust_belt_fig_11.JPG\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/abers_mccaffrey_1988_deformation_new_guinea_fold_thrust_belt_fig_11.JPG\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nCross sections of seismicity and topography: a, b, and c refer to the profile locations on Figure 2. Vertical exaggeration is 10x for topography and lx for seismicity, as indicated by the vertical scale bars on right. Horizontal scale, indicated on profile a, is the same for all profiles. Focal spheres are plotted as back hemisphere projections, and compressional quadrants are filled.\n<\/p><\/blockquote>\n<li>This is the money shot, showing their interpretation (Abers and McCaffrey, 1988).<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/abers_mccaffrey_1988_deformation_new_guinea_fold_thrust_belt_fig_12.JPG\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/abers_mccaffrey_1988_deformation_new_guinea_fold_thrust_belt_fig_12.JPG\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\nCartoon showing how thin-skinned faulting mapped in PNG might be related to faulting in the basement, inferred from the earthquakes and other evidence discussed in the  text. See Figure 11a for comparison to actual topography and earthquake mechanisms.\n<\/p><\/blockquote>\n<\/ul>\n<ul>\n<li>Here is a comparison of the proposed fault length shown on the poster with fault scaling relations from Wells and Coppersmith (1994). The upper panel is figure 9 and the lower panel is figure 17. I include figure captions for these figures below. Presuming a fault length of 170 km, the magnitude would be between 7.5 and 8.<\/li>\n<p><a href=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_wells_coppersmith.jpg\" rel=\"noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20180225_PNG\/20180225_PNG_wells_coppersmith.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n<blockquote><p>\n<strong>Figure 9. <\/strong>(a) Regression of surface rupture length on magnitude (M). Regression line shown for all-slip-type relationship. Short dashed line indicates 95% confidence interval. (b) Regression lines for strike-slip, reverse, and normal-slip relationships. See Table 2 for regression coefficients. Length of regression lines shows the range of data for each relationship.\n<\/p><\/blockquote>\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\">17 km depth puts it in the basement &#8211; ie below regional detachments commonly shown for this and other fold-and-thrust belts. Similarities to Zagros seismicity. <a href=\"https:\/\/t.co\/EMtgOz4Tv2\">https:\/\/t.co\/EMtgOz4Tv2<\/a><\/p>\n<p>&mdash; Mark Allen (@mb_allen) <a href=\"https:\/\/twitter.com\/mb_allen\/status\/968051276335472640?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\">Tectonic context of yesterday Mw7.5 <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> in Papua New Guinea, thrust faulting linked to Papuan fold &amp; thrust belt structure.<br \/>( figures after Baldwin et al. 2012, doi: 10.1146\/annurev-earth-040809-152540 ) <a href=\"https:\/\/t.co\/AtE4GEogAM\">pic.twitter.com\/AtE4GEogAM<\/a><\/p>\n<p>&mdash; Robin Lacassin (@RLacassin) <a href=\"https:\/\/twitter.com\/RLacassin\/status\/968040510769295360?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\">Exxon shuts facilities that feed Papua New Guinea <a href=\"https:\/\/twitter.com\/hashtag\/LNG?src=hash&amp;ref_src=twsrc%5Etfw\">#LNG<\/a> plant after earthquake <a href=\"https:\/\/t.co\/dcoWK6NqAg\">https:\/\/t.co\/dcoWK6NqAg<\/a> via <a href=\"https:\/\/twitter.com\/markets?ref_src=twsrc%5Etfw\">@markets<\/a> <a href=\"https:\/\/t.co\/2zeYdQ9RdY\">pic.twitter.com\/2zeYdQ9RdY<\/a><\/p>\n<p>&mdash; Rob Verdonck (@RobVerdonck) <a href=\"https:\/\/twitter.com\/RobVerdonck\/status\/968102676759302149?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\">ExxonMobil and Oil Search have shut down their liquefied natural gas (LNG) operations and facilities in Papua New Guinea after a 7.5 magnitude earthquake hit the country\u2019s Highlands this morning. <a href=\"https:\/\/t.co\/AJXzlEPjDu\">https:\/\/t.co\/AJXzlEPjDu<\/a> <a href=\"https:\/\/t.co\/z8Za1wX4cN\">pic.twitter.com\/z8Za1wX4cN<\/a><\/p>\n<p>&mdash; 2018 PNG Industrial &amp; Mining Resources Exhibition (@PNGminingexpo) <a href=\"https:\/\/twitter.com\/PNGminingexpo\/status\/967953844746436608?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\">Media contact for Papua New Guinea &#x1f1f5;&#x1f1ec; earthquake: Udaya Regmi, head of country for <a href=\"https:\/\/twitter.com\/hashtag\/RedCross?src=hash&amp;ref_src=twsrc%5Etfw\">#RedCross<\/a> +675 75436368. <a href=\"https:\/\/twitter.com\/hashtag\/png?src=hash&amp;ref_src=twsrc%5Etfw\">#png<\/a> <a href=\"https:\/\/t.co\/Myedl3iuFJ\">pic.twitter.com\/Myedl3iuFJ<\/a><\/p>\n<p>&mdash; IFRC Asia Pacific (@IFRCAsiaPacific) <a href=\"https:\/\/twitter.com\/IFRCAsiaPacific\/status\/967915952355426304?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\/SIDS?src=hash&amp;ref_src=twsrc%5Etfw\">#SIDS<\/a> are very vulnerable need special attention of international community.Aftershocks feared as troops respond to major earthquake in Papua New Guinea <a href=\"https:\/\/t.co\/VfL2lX1afg\">https:\/\/t.co\/VfL2lX1afg<\/a> <a href=\"https:\/\/twitter.com\/AdamRogers2030?ref_src=twsrc%5Etfw\">@AdamRogers2030<\/a> <a href=\"https:\/\/twitter.com\/carlvmercer?ref_src=twsrc%5Etfw\">@carlvmercer<\/a> <a href=\"https:\/\/twitter.com\/ScheuerJo?ref_src=twsrc%5Etfw\">@ScheuerJo<\/a> <a href=\"https:\/\/twitter.com\/RKalapurakal?ref_src=twsrc%5Etfw\">@RKalapurakal<\/a> <a href=\"https:\/\/twitter.com\/martinfredras?ref_src=twsrc%5Etfw\">@martinfredras<\/a> <a href=\"https:\/\/twitter.com\/AOSISChair?ref_src=twsrc%5Etfw\">@AOSISChair<\/a><\/p>\n<p>&mdash; Riad Meddeb (@riadmeddeb) <a href=\"https:\/\/twitter.com\/riadmeddeb\/status\/968088643234684929?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\">Magnitude 7.5 earthquake strikes Papua New Guinea <a href=\"https:\/\/t.co\/DRaW4YcvY8\">https:\/\/t.co\/DRaW4YcvY8<\/a><\/p>\n<p>&mdash; HuffPost (@HuffPost) <a href=\"https:\/\/twitter.com\/HuffPost\/status\/967872519108808704?ref_src=twsrc%5Etfw\">February 25, 2018<\/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\">Large earthquakes rattle Papua New Guinea | <a href=\"https:\/\/t.co\/1twVj9F84q\">https:\/\/t.co\/1twVj9F84q<\/a> <a href=\"https:\/\/t.co\/qRueNHqwJa\">https:\/\/t.co\/qRueNHqwJa<\/a> via <a href=\"https:\/\/twitter.com\/temblor?ref_src=twsrc%5Etfw\">@temblor<\/a><\/p>\n<p>&mdash; temblor (@temblor) <a href=\"https:\/\/twitter.com\/temblor\/status\/968248063100891136?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\">Officials in Papua New Guinea fear dozens dead or injured after major quake, but damage hindering access to affected areas. <a href=\"https:\/\/t.co\/M0FTqtEBPr\">https:\/\/t.co\/M0FTqtEBPr<\/a><\/p>\n<p>&mdash; The Associated Press (@AP) <a href=\"https:\/\/twitter.com\/AP\/status\/968327617534398464?ref_src=twsrc%5Etfw\">February 27, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h3>UPDATE 2018.02.27<\/h3>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">BBC News &#8211; Papua New Guinea earthquake: At least 14 killed amid landslides <a href=\"https:\/\/t.co\/AAS4O9GmBm\">https:\/\/t.co\/AAS4O9GmBm<\/a><\/p>\n<p>&mdash; Anthony Lomax &#x1f30d; (@ALomaxNet) <a href=\"https:\/\/twitter.com\/ALomaxNet\/status\/968482182904926209?ref_src=twsrc%5Etfw\">February 27, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.facebook.com\/plugins\/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fbernard.j.mcqueen%2Fvideos%2F1311389595627207%2F&#038;show_text=0&#038;width=267\" width=\"267\" height=\"476\" style=\"border:none;overflow:hidden\" scrolling=\"no\" frameborder=\"0\" allowTransparency=\"true\" allowFullScreen=\"true\"><\/iframe><br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.facebook.com\/plugins\/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fbernard.j.mcqueen%2Fvideos%2F1311383648961135%2F&#038;show_text=1&#038;width=267\" width=\"267\" height=\"831\" style=\"border:none;overflow:hidden\" scrolling=\"no\" frameborder=\"0\" allowTransparency=\"true\" allowFullScreen=\"true\"><\/iframe><br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.facebook.com\/plugins\/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fbernard.j.mcqueen%2Fposts%2F1311035865662580&#038;width=500\" width=\"500\" height=\"626\" style=\"border:none;overflow:hidden\" scrolling=\"no\" frameborder=\"0\" allowTransparency=\"true\"><\/iframe><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Some more detail on the landslides triggered by the Mw=7.5 <a href=\"https:\/\/twitter.com\/hashtag\/PNGearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#PNGearthquake<\/a> two days ago:- <a href=\"https:\/\/t.co\/lFDT6qOwpE\">https:\/\/t.co\/lFDT6qOwpE<\/a> <a href=\"https:\/\/t.co\/LfONDmr5kn\">pic.twitter.com\/LfONDmr5kn<\/a><\/p>\n<p>&mdash; Dave Petley (@davepetley) <a href=\"https:\/\/twitter.com\/davepetley\/status\/968382558173097984?ref_src=twsrc%5Etfw\">February 27, 2018<\/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\">Initial Papua New Guinea Earthquake mapping project is posted: <a href=\"https:\/\/t.co\/YSEZgDkWgy\">https:\/\/t.co\/YSEZgDkWgy<\/a> <a href=\"https:\/\/t.co\/x4lTqv7xW3\">pic.twitter.com\/x4lTqv7xW3<\/a><\/p>\n<p>&mdash; HOTOSM (@hotosm) <a href=\"https:\/\/twitter.com\/hotosm\/status\/967964760749768704?ref_src=twsrc%5Etfw\">February 26, 2018<\/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\">Recent Earthquake Teachable Moment for M7.5 Papua New Guinea <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> | Contains interpreted <a href=\"https:\/\/twitter.com\/USGS?ref_src=twsrc%5Etfw\">@USGS<\/a> maps\/summaries, computer animations, seismograms, AP photos, and other event-specific information. Perfect for classroom use! (Photo: USGS)<a href=\"https:\/\/t.co\/qgP9OV341A\">https:\/\/t.co\/qgP9OV341A<\/a> <a href=\"https:\/\/t.co\/UHc5xsRIkq\">pic.twitter.com\/UHc5xsRIkq<\/a><\/p>\n<p>&mdash; IRIS Earthquake Sci (@IRIS_EPO) <a href=\"https:\/\/twitter.com\/IRIS_EPO\/status\/968505847633580032?ref_src=twsrc%5Etfw\">February 27, 2018<\/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=\"ro\" dir=\"ltr\">Mw=6.4, NEW GUINEA, PAPUA NEW GUINEA (Depth: 6 km), 2018\/02\/28 02:45:44 UTC &#8211; Full details here: <a href=\"https:\/\/t.co\/EpJloOvOPj\">https:\/\/t.co\/EpJloOvOPj<\/a> <a href=\"https:\/\/t.co\/XyCvRfCMTs\">pic.twitter.com\/XyCvRfCMTs<\/a><\/p>\n<p>&mdash; Earthquakes (@geoscope_ipgp) <a href=\"https:\/\/twitter.com\/geoscope_ipgp\/status\/968689760016437248?ref_src=twsrc%5Etfw\">February 28, 2018<\/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\">Follow <a href=\"https:\/\/twitter.com\/EricTlozek?ref_src=twsrc%5Etfw\">@EricTlozek<\/a> for updates on <a href=\"https:\/\/twitter.com\/hashtag\/PNGearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#PNGearthquake<\/a> From Highlands:<\/p>\n<p>At least 11 dead in <a href=\"https:\/\/twitter.com\/hashtag\/PNG?src=hash&amp;ref_src=twsrc%5Etfw\">#PNG<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a>, authorities confirm <a href=\"https:\/\/t.co\/aVKuJrXzw8\">https:\/\/t.co\/aVKuJrXzw8<\/a><\/p>\n<p>A number of big aftershocks<\/p>\n<p>&mdash; Dylan Quinnell (@DylanQuinnell) <a href=\"https:\/\/twitter.com\/DylanQuinnell\/status\/968640887394746368?ref_src=twsrc%5Etfw\">February 28, 2018<\/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\">People killed &amp; others buried in rubble after <a href=\"https:\/\/twitter.com\/hashtag\/PNG?src=hash&amp;ref_src=twsrc%5Etfw\">#PNG<\/a> quake. Also damage to mine &amp; gas pipelines <a href=\"https:\/\/twitter.com\/hashtag\/PNGearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#PNGearthquake<\/a> <a href=\"https:\/\/t.co\/o0u6gQJQHk\">https:\/\/t.co\/o0u6gQJQHk<\/a><\/p>\n<p>&mdash; SomeThoughts (@dissent4ever) <a href=\"https:\/\/twitter.com\/dissent4ever\/status\/968288682225446912?ref_src=twsrc%5Etfw\">February 27, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h3>UPDATE 2018.02.28<\/h3>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">M7.5 PNG <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> occurred close to oil facilities and especially the PNG LNG pipeline, which crosses several active faults on its trace to the ocean (orange dots on map). Online report here:  <a href=\"https:\/\/t.co\/XzqpMyZosn\">https:\/\/t.co\/XzqpMyZosn<\/a> <a href=\"https:\/\/t.co\/PomIlHw2c3\">pic.twitter.com\/PomIlHw2c3<\/a><\/p>\n<p>&mdash; St\u00e9phane Baize (@stef92320) <a href=\"https:\/\/twitter.com\/stef92320\/status\/968917911099330560?ref_src=twsrc%5Etfw\">February 28, 2018<\/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\">Papua New Guinea has experienced a 7.5 magnitude earthquake and serious landslides. <a href=\"https:\/\/twitter.com\/planetlabs?ref_src=twsrc%5Etfw\">@planetlabs<\/a> \u201cbefore and after\u201d below &#8211; more at <a href=\"https:\/\/t.co\/hJPeRECVCe\">https:\/\/t.co\/hJPeRECVCe<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/disasterresponse?src=hash&amp;ref_src=twsrc%5Etfw\">#disasterresponse<\/a> <a href=\"https:\/\/t.co\/4luq1vNQe6\">pic.twitter.com\/4luq1vNQe6<\/a><\/p>\n<p>&mdash; Andrew Zolli (@andrew_zolli) <a href=\"https:\/\/twitter.com\/andrew_zolli\/status\/968957714670989312?ref_src=twsrc%5Etfw\">February 28, 2018<\/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\/USGS?src=hash&amp;ref_src=twsrc%5Etfw\">#USGS<\/a> estimate of landslide distribution resulting from Papua New Guinea earthquake <a href=\"https:\/\/t.co\/iT43YdLFsh\">https:\/\/t.co\/iT43YdLFsh<\/a> <a href=\"https:\/\/t.co\/lG8M7I5aOg\">pic.twitter.com\/lG8M7I5aOg<\/a><\/p>\n<p>&mdash; Ryan Gold (@runr447) <a href=\"https:\/\/twitter.com\/runr447\/status\/968918783518826502?ref_src=twsrc%5Etfw\">February 28, 2018<\/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\">ALOS-2 InSAR for <a href=\"https:\/\/twitter.com\/hashtag\/PNGearthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#PNGearthquake<\/a>. Deformation area extends with the length of ~170 km in NW-SE direction. The largest deformation occurred at SE part, around Lake Kutubu. <a href=\"https:\/\/t.co\/jHqNQJVHFi\">https:\/\/t.co\/jHqNQJVHFi<\/a> <a href=\"https:\/\/t.co\/2vvDhNqQq0\">pic.twitter.com\/2vvDhNqQq0<\/a><\/p>\n<p>&mdash; Yu Morishita (@Yu__Morishita) <a href=\"https:\/\/twitter.com\/Yu__Morishita\/status\/968997346267705344?ref_src=twsrc%5Etfw\">February 28, 2018<\/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\">Satellite image company <a href=\"https:\/\/twitter.com\/planetlabs?ref_src=twsrc%5Etfw\">@planetlabs<\/a> have now managed to capture an image of the whole of the Pasir Panjang landslide, which killed 18 people in Indonesia:- <a href=\"https:\/\/t.co\/CUNR8z7b4g\">https:\/\/t.co\/CUNR8z7b4g<\/a> <a href=\"https:\/\/t.co\/JcGGNuZG6D\">pic.twitter.com\/JcGGNuZG6D<\/a><\/p>\n<p>&mdash; Dave Petley (@davepetley) <a href=\"https:\/\/twitter.com\/davepetley\/status\/969126895773241344?ref_src=twsrc%5Etfw\">March 1, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h3>UPDATE 2018.023.01<\/h3>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">Deadly landslide(s) during <a href=\"https:\/\/twitter.com\/hashtag\/PNG?src=hash&amp;ref_src=twsrc%5Etfw\">#PNG<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/earthquake?src=hash&amp;ref_src=twsrc%5Etfw\">#earthquake<\/a> <a href=\"https:\/\/t.co\/VQfMmIYCdA\">https:\/\/t.co\/VQfMmIYCdA<\/a><\/p>\n<p>&mdash; St\u00e9phane Baize (@stef92320) <a href=\"https:\/\/twitter.com\/stef92320\/status\/969256562631036929?ref_src=twsrc%5Etfw\">March 1, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h3>UPDATE 2018.023.02<\/h3>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p lang=\"en\" dir=\"ltr\">&quot;&#8230;there are at least four landslide dams on the Heggio River, some of which appear to be large. The level of hazard, and the vulnerability of people and other assets downstream, in unclear at present.&quot;<br \/>By <a href=\"https:\/\/twitter.com\/davepetley?ref_src=twsrc%5Etfw\">@davepetley<\/a> via <a href=\"https:\/\/twitter.com\/hashtag\/AGUblogs?src=hash&amp;ref_src=twsrc%5Etfw\">#AGUblogs<\/a><a href=\"https:\/\/t.co\/L4D5JY8Hch\">https:\/\/t.co\/L4D5JY8Hch<\/a><\/p>\n<p>&mdash; Am Geophysical Union (@theAGU) <a href=\"https:\/\/twitter.com\/theAGU\/status\/969805829141647361?ref_src=twsrc%5Etfw\">March 3, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<ul>\n<h2> <strong><font color=orange>New Britain | Solomon | Bougainville | New Hebrides | Tonga | Kermadec<\/font><\/strong> <\/h2>\n<h3>General Overview<\/h3>\n<h3>Earthquake Reports<\/h3>\n<li>2018.02.25 <a href=\"http:\/\/earthjay.com\/?p=7157\">M 7.5 Papua New Guinea<\/a><\/li>\n<li>2018.02.26 <a href=\"http:\/\/earthjay.com\/?p=7193\">M 7.5 Papua New Guinea Update #1<\/a><\/li>\n<li>2017.11.07 <a href=\"http:\/\/earthjay.com\/?p=5941\">M 6.5 Papua New Guinea<\/a><\/li>\n<li>2017.11.04 <a href=\"http:\/\/earthjay.com\/?p=5926\">M 6.8 Tonga<\/a><\/li>\n<li>2017.10.31 <a href=\"http:\/\/earthjay.com\/?p=5918\">M 6.8 Loyalty Islands<\/a><\/li>\n<li>2017.08.27 <a href=\"http:\/\/earthjay.com\/?p=5765\">M 6.4 N. Bismarck plate<\/a><\/li>\n<li>2017.05.09 <a href=\"http:\/\/earthjay.com\/?p=5359\">M 6.8 Vanuatu<\/a><\/li>\n<li>2017.03.19 <a href=\"http:\/\/earthjay.com\/?p=5182\">M 6.0 Solomon Islands<\/a><\/li>\n<li>2017.03.05 <a href=\"http:\/\/earthjay.com\/?p=5142\">M 6.5 New Britain<\/a><\/li>\n<li>2017.01.22 <a href=\"http:\/\/earthjay.com\/?p=4946\">M 7.9 Bougainville<\/a><\/li>\n<li>2017.01.03 <a href=\"http:\/\/earthjay.com\/?p=4761\">M 6.9 Fiji<\/a><\/li>\n<li>2016.12.17 <a href=\"http:\/\/earthjay.com\/?p=4596\">M 7.9 Bougainville<\/a><\/li>\n<li>2016.12.08 <a href=\"http:\/\/earthjay.com\/?p=4580\">M 7.8 Solomons<\/a><\/li>\n<li>2016.10.17 <a href=\"http:\/\/earthjay.com\/?p=4362\">M 6.9 New Britain<\/a><\/li>\n<li>2016.10.15 <a href=\"http:\/\/earthjay.com\/?p=4346\">M 6.4 South Bismarck Sea<\/a><\/li>\n<li>2016.09.14 <a href=\"http:\/\/earthjay.com\/?p=4314\">M 6.0 Solomon Islands<\/a><\/li>\n<li>2016.08.31 <a href=\"http:\/\/earthjay.com\/?p=4260\">M 6.7 New Britain<\/a><\/li>\n<li>2016.08.12 <a href=\"http:\/\/earthjay.com\/?p=4198\">M 7.2 New Hebrides Update #2<\/a><\/li>\n<li>2016.08.12 <a href=\"http:\/\/earthjay.com\/?p=4189\">M 7.2 New Hebrides Update #1<\/a><\/li>\n<li>2016.08.12 <a href=\"http:\/\/earthjay.com\/?p=4180\">M 7.2 New Hebrides<\/a><\/li>\n<li>2016.04.06 <a href=\"http:\/\/earthjay.com\/?p=3919\">M 6.9 Vanuatu Update #1<\/a><\/li>\n<li>2016.04.03 <a href=\"http:\/\/earthjay.com\/?p=3887\">M 6.9 Vanuatu<\/a><\/li>\n<li>2015.03.30 <a href=\"http:\/\/earthjay.com\/?p=2310\">M 7.5 New Britain<\/a> (Update #5)<\/li>\n<li>2015.03.30 <a href=\"http:\/\/earthjay.com\/?p=2306\">M 7.5 New Britain<\/a> (Update #4)<\/li>\n<li>2015.03.29 <a href=\"http:\/\/earthjay.com\/?p=2303\">M 7.5 New Britain<\/a> (Update #3)<\/li>\n<li>2015.03.29 <a href=\"http:\/\/earthjay.com\/?p=2298\">M 7.5 New Britain<\/a> (Update #2)<\/li>\n<li>2015.03.29 <a href=\"http:\/\/earthjay.com\/?p=2289\">M 7.5 New Britain<\/a> (Update #1)<\/li>\n<li>2015.03.29 <a href=\"http:\/\/earthjay.com\/?p=2287\">M 7.5 New Britain<\/a> <\/li>\n<li>2015.11.18 <a href=\"http:\/\/earthjay.com\/?p=3315\">M 6.8 Solomon Islands<\/a><\/li>\n<li>2015.05.24 <a href=\"http:\/\/earthjay.com\/?p=2519\">M 6.8, 6.8, 6.9 Santa Cruz Islands<\/a><\/li>\n<li>2015.05.05 <a href=\"http:\/\/earthjay.com\/?p=2424\">M 7.5 New Britain<\/a><\/li>\n<\/ul>\n<ul>\n<h2><strong><font color=\"orange\">References:<\/font><\/strong><\/h2>\n<li>Abers, G. and McCaffrey, R., 1988. Active Deformation in the New Guinea Fold-and-Thrust Belt: Seismological Evidence for Strike-Slip Faulting and Basement-Involved Thrusting in JGR, v. 93, no. B11, p. 13,332-13,354<\/li>\n<li>Baldwin, S.L., Monteleone, B.D., Webb, L.E., Fitzgerald, P.G., Grove, M., and Hill, E.J., 2004. <a href=\"http:\/\/www.nature.com\/nature\/journal\/v431\/n7006\/fig_tab\/nature02846_F1.html\" target=\"_blank\" rel=\"noopener\">Pliocene eclogite exhumation at plate tectonic rates in eastern Papua New Guinea<\/a> in Nature, v. 431, p\/ 263-267, doi:10.1038\/nature02846. <\/li>\n<li>Baldwin, S.L., Fitzgerald, P.G., and Webb, L.E., 2012. <a href=\"http:\/\/www.uvm.edu\/~lewebb\/papers\/Baldwin%20et%20al%202012%20New%20Guinea.pdf\" target=\"_blank\" rel=\"noopener\">Tectonics of the New Guinea Region<\/a>, Annu. Rev. Earth Planet. Sci., v. 40, pp. 495-520.<\/li>\n<li>Cloos, M., Sapiie, B., Quarles van Ufford, A., Weiland, R.J., Warren, P.Q., and McMahon, T.P., 2005, Collisional delamination in New Guinea: The geotectonics of subducting slab breakoff: Geological Society of America Special Paper 400, 51 p., doi: 10.1130\/2005.2400.<\/li>\n<li>Hamilton, W.B., 1979. <a href=\"https:\/\/pubs.er.usgs.gov\/publication\/pp1078\" target=\"_blank\" rel=\"noopener\">Tectonics of the Indonesian Region<\/a>, USGS Professional Paper 1078.<\/li>\n<li>Hayes, G. P., D. J. Wald, and R. L. Johnson (2012), <a href=\"http:\/\/earthquake.usgs.gov\/data\/slab\" target=\"_blank\" rel=\"noopener\">Slab1.0: A three-dimensional model of global subduction zone geometries<\/a>, J. Geophys. Res., 117, B01302, doi:10.1029\/2011JB008524.<\/li>\n<li>Holm, R. and Richards, S.W., 2013. <a href=\"https:\/\/www.researchgate.net\/publication\/260694465_A_re-evaluation_of_arc-continent_collision_and_along-arc_variation_in_the_Bismarck_Sea_region_Papua_New_Guinea\/figures\" target=\"_blank\" rel=\"noopener\">A re-evaluation of arc-continent collision and along-arc variation in the Bismarck Sea region, Papua New Guinea<\/a> in Australian Journal of Earth Sciences, v. 60, p. 605-619.<\/li>\n<li>Holm, R.J., Richards, S.W., Rosenbaum, G., and Spandler, C., 2015. <a href=\"https:\/\/www.researchgate.net\/publication\/274511758_Disparate_Tectonic_Settings_for_Mineralisation_in_an_Active_Arc_Eastern_Papua_New_Guinea_and_the_Solomon_Islands\" target=\"_blank\" rel=\"noopener\">Disparate Tectonic Settings for Mineralisation in an Active Arc, Eastern Papua New Guinea and the Solomon Islands<\/a> in proceedings from PACRIM 2015 Congress, Hong Kong ,18-21 March, 2015, pp. 7.<\/li>\n<li>Holm, R.J., Rosenbaum, G., Richards, S.W., 2016. Post 8 Ma reconstruction of Papua New Guinea and Solomon Islands: Microplate tectonics in a convergent plate boundary setting in Eartth Science Reviews, v. 156, p. 66-81.<\/li>\n<li>Johnson, R.W., 1976, Late Cainozoic volcanism and plate tectonics at the southern margin of the Bismarck Sea, Papua New Guinea, in Johnson, R.W., ed., 1976, Volcanism in Australia: Amsterdam, Elsevier, p. 101-116<\/li>\n<li>Koulali, A., tregoning, P., McClusky, S., Stanaway, R., Wallace, L., and Lister, G., 2015. New Insights into the present-day kinematics of the central and western Papua New Guinea from GPS in GJI, v. 202, p. 993-1004, doi: 10.1093\/gji\/ggv200<\/li>\n<li>Sapiie, B., and Cloos, M., 2004. Strike-slip faulting in the core of the Central Range of west New Guinea: Ertsberg Mining District, Indonesia in GSA Bulletin, v. 116; no. 3\/4; p. 277\u2013293<\/li>\n<li>Tregoning, P., McQueen, H., Lambeck, K., Jackson, R. Little, T., Saunders, S., and Rosa, R., 2000. Present-day crustal motion in Papua New Guinea, Earth Planets and Space, v. 52, pp. 727-730.<\/li>\n<li>Wells, D., l., and Coppersmith, K.J., 1994. New Empirical Relationships among Magnitude, Rupture Length, Rupture Width, Rupture Area, and Surface Displacement in BSSA, vol. 84, no. 4, pp. 974-1002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\">\nThe aftershocks are still coming in! We can use these aftershocks to define where the fault may have slipped during this M 7.5 earthquake. As I mentioned yesterday in the original report, it turns out the fault dimension matches pretty&hellip;\n<\/div>\n<div class=\"link-more\"><a href=\"https:\/\/earthjay.com\/?p=7193\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &ldquo;Earthquake Report: Papua New Guinea: Update #1&rdquo;<\/span>&hellip;<\/a><\/div>\n","protected":false},"author":3,"featured_media":7194,"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":[51,5,6,7,26,27],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/earthjay.com\/wp-content\/uploads\/2018\/02\/20180225_PNG_aftershocks_interpretation-scaled.jpg","_links":{"self":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/7193"}],"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=7193"}],"version-history":[{"count":1,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/7193\/revisions"}],"predecessor-version":[{"id":11849,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/7193\/revisions\/11849"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/media\/7194"}],"wp:attachment":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}