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The Center, Body, and Range of Technically Defensible Interpretations. The CBD of TDI.

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Month: September 2015

2015.09.16 Chile Update #3

Posted on: September 19, 2015 Last updated on: September 15, 2023 Written by: Jay Patton Comments: 5
The aftershocks continue and will do so for weeks. Aftershocks from the 2011.03.27 Tohoku-Oki M 9.0 earthquake continue today. The decay rate for seismicity relates to characteristics of the fault called the b-value. The b-value can be determined/modeled in several…
Continue reading “2015.09.16 Chile Update #3”…

Chile Historic Tsunami Comparisons

Posted on: September 18, 2015 Last updated on: September 18, 2015 Written by: Jay Patton Comments: 5
Here are three tsunami wave amplitude models from NOAA for three Great (magnitude > 8.0) earthquakes in Chile. Here are the USGS websites for the three earthquakes that generated these earthquakes, plus the one from 2015.09.16 not shown on the…
Continue reading “Chile Historic Tsunami Comparisons”…

2015.09.16 Chile Update #2

Posted on: September 17, 2015 Last updated on: September 17, 2015 Written by: Jay Patton Comments: 10
Here I post some updates about the M 8.3 Great Earthquake in Chile and the associated tsunami observations and models. I have three earlier posts about this earthquake and tsunami event. First Post Update #1 Tsunami Observations Here is an…
Continue reading “2015.09.16 Chile Update #2”…

Chile M 8.3 Earthquake: Tsunami Observations!

Posted on: September 17, 2015 Last updated on: September 17, 2015 Written by: Jay Patton Comments: 6
Here are a couple of videos that document the arrival of tsunami waves in the “mouth of Genio river at Wafer Bay, Cocos Island, Costa Rica. Cocos Island is a National Park located between Galapagos Islands and the continental coast…
Continue reading “Chile M 8.3 Earthquake: Tsunami Observations!”…

2015.09.16 Chile Update #1

Posted on: September 16, 2015 Last updated on: September 16, 2015 Written by: Jay Patton Comments: 10
Here are some updates to this earthquake and tsunami. First, here is an updated map. I have included an illustration from Atwater et al. (2005) that shows the earthquake cycle at a subduction zone. A subduction zone is a convergent…
Continue reading “2015.09.16 Chile Update #1”…

Great Tsunamigenic Earthquake offshore Chile!

Posted on: September 16, 2015 Last updated on: September 16, 2015 Written by: Jay Patton Comments: 20
Well, I was in the middle of a Quaternary Stratigraphy lab when this hit, so it took a while to get home. My delay pales in comparison to the probably large…
Continue reading “Great Tsunamigenic Earthquake offshore Chile!”…

Gulf of California Earthquakes! (first update)

Posted on: September 13, 2015 Last updated on: September 13, 2015 Written by: Jay Patton Comments: 6
Here is an update to the early morning post… I have prepared an updated map that shows the fracture zones, spreading ridges, transform faults, and basins in the region of seismicity from the past 24 hours. Here is the map.…
Continue reading “Gulf of California Earthquakes! (first update)”…

Gulf of California Earthquakes! (first post)

Posted on: September 13, 2015 Last updated on: September 13, 2015 Written by: Jay Patton Comments: 7
We just had a few earthquakes in the Gulf of California (GOC). The results are early, so there is not a moment tensor plotted yet (updated map shows it now). The epicenters plot in the Farallon Baisn. The Gulf of…
Continue reading “Gulf of California Earthquakes! (first post)”…

Earthquake in Papua New Guinea!

Posted on: September 12, 2015 Last updated on: September 12, 2015 Written by: Jay Patton Comments: 0
In the last ~24 hours, we have had a few earthquakes in northeastern Papua New Guinea, all in the M 5 range. Here are the USGS web sites for these earthquakes: 2015.09.11 M 5.5 2015.09.11 M 5.3 2015.09.12 M 5.0…
Continue reading “Earthquake in Papua New Guinea!”…

Kermadec trench earthquake!

Posted on: September 7, 2015 Last updated on: September 7, 2015 Written by: Jay Patton Comments: 1
Last night there were a few earthquakes along the Kermadec trench, which is a convergent plate boundary (subduction zone) where the Pacific plate subducts westward beneath the Australia plate. Here is the USGS website for this M 6.4 earthquake. Recent…
Continue reading “Kermadec trench earthquake!”…
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