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Category: earthquake (page 34)

Mendocino fault Earthquake

Posted on: April 23, 2015 Last updated on: April 23, 2015 Written by: Jay Patton Comments: 3
This sure looks like an earthquake on the Transform Plate Boundary fault system known as the Mendocino fault. I have plotted the moment tensor for this earthquake. The shaking intensity contours are plotted. Here is the USGS web page for…
Continue reading “Mendocino fault Earthquake”…

Earthquake in Crete

Posted on: April 16, 2015 Last updated on: April 16, 2015 Written by: Jay Patton Comments: 5
We just had a M = 6.0 earthquake in Crete. Here is the USGS web page for this earthquake. This is an interesting region tectonically. The convergence of the Africa-India-Australia plates northwards towards the Eurasian plate runs from west of…
Continue reading “Earthquake in Crete”…

Earthquake in the Baldwin Hills (Los Angeles)

Posted on: April 13, 2015 Last updated on: April 13, 2015 Written by: Jay Patton Comments: 4
Well, there was quite a buzz on social media following this small magnitude earthquake today. Here is the USGS web page for this Mw 3.3 earthquake. The earthquake appears to be related to the Newport-Inglewood fault system and the epicenter…
Continue reading “Earthquake in the Baldwin Hills (Los Angeles)”…

Blanco fracture zone strikes again

Posted on: April 12, 2015 Last updated on: April 12, 2015 Written by: Jay Patton Comments: 5
The Blanco fracture zone (BFZ) is a transform plate boundary that connects the Juan de Fuca ridge with the Gorda rise spreading centers. This active fault zone consists of numerous right-lateral (dextral) faults. There is some debate as to how…
Continue reading “Blanco fracture zone strikes again”…

Mendocino fault earthquake

Posted on: April 10, 2015 Last updated on: April 10, 2015 Written by: Jay Patton Comments: 5
We had a small magnitude earthquake “today” along the Mendocino fault system approximately 150 km west of Cape Mendocino. Here is the USGS web page for the Mw 4.8 earthquake. Based upon the tectonic setting, the hypocentral depth, and the…
Continue reading “Mendocino fault earthquake”…

Earthquake in the New Britain trench

Posted on: March 29, 2015 Last updated on: March 29, 2015 Written by: Jay Patton Comments: 1
We just had a large magnitude earthquake in the New Britain region, probably on the megathrust (subduction zone fault). There was a swarm of seismic activity in this region in July and August of 2010. Further to the southeast, there…
Continue reading “Earthquake in the New Britain trench”…

Chile earthquakes in the 2010 slip region

Posted on: March 18, 2015 Last updated on: March 18, 2015 Written by: Jay Patton Comments: 1
We had a small flurry of earthquake activity in Chile today, along the subduction zone there. Today’s activity is in the the region of the 2010 earthquake sequence. The largest magnitude earthquake in today’s sequence is a M = 6.2.…
Continue reading “Chile earthquakes in the 2010 slip region”…

Molucca Earthquake

Posted on: March 17, 2015 Last updated on: March 17, 2015 Written by: Jay Patton Comments: 3
This region is a seismically active region. Today we had a M 6.2 earthquake. Here is the USGS web page for this earthquake. Last November, there were a series of large magnitude compression aearthquakes. Here are some posts about these…
Continue reading “Molucca Earthquake”…

Earthquakes in Chile: Between the 2010 and 2014 Slip Patches

Posted on: March 14, 2015 Last updated on: March 14, 2015 Written by: Jay Patton Comments: 10
There have been a few earthquakes in the region between the 2010 and 2014 Chile subduction zone earthquakes. This is a seismic gap that has not had a Great earthquake since 1977, a ~M = 8.5 earthquake that spanned the…
Continue reading “Earthquakes in Chile: Between the 2010 and 2014 Slip Patches”…

Moderately Deep Focus Earthquake in Colombia

Posted on: March 10, 2015 Last updated on: March 10, 2015 Written by: Jay Patton Comments: 4
There was a moderately deep focus extensional earthquake beneath Colombia today. Here is the USGS web page for this earthquake. Here is a map that shows the epicenter as a green dot. Historic earthquake epicenters are plotted in grey. The…
Continue reading “Moderately Deep Focus Earthquake in Colombia”…
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