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.…
Molucca Earthquake
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…
Earthquakes in Chile: Between the 2010 and 2014 Slip Patches
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…
Moderately Deep Focus Earthquake in Colombia
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…
another northeast Japan earthquake in the Tohoku-Oki earthquake region
We have had another small aftershock. Here is the USGS web page for this earthquake. This time it is in a different region than the swarm of the past couple of weeks. There are several report updates, listed here: 2015.02.16…
Tohoku-Oki aftershocks are in a region of low slip during main events in 2011
Here is what I was getting at in my last post. I have taken the Ammon et al. (2011) slip model and placed it into a real world reference frame (rubbersheeted it in ArcGIS). Then I exported it as a…
Japan earthquake may be aftershock to 2011 Tohoku-Oki earthquake
The USGS depth has been updated to 23.3 km. Now we may interpret this to be an interface earthquake. Here is my first post about this earthquake and here is a post about some aftershocks. There are several report updates,…
NE Japan aftershocks continue offshore the Sanriku coast
There continue to be aftershocks in the M 4-5 range. These are aftershocks and triggered earthquakes (if they are generally on different faults) from the Mw 6.7 earthquake. Here is my page on this mainshock and here is the USGS…
Earthquake offshore of the Sanriku Coast
We just had a good sized shallow compressional earthquake in the northern part of the 2011 Tohoku-Oki earthquake slip region. The USGS web page lists the magnitude at Mw 6.7. Here is a great summary of the tectonics of this…
Northern Mid Atlantic Ridge: Charlie Gibbs fracture zone
We had a large Mw 7.1 earthquake today along the Charlie Gibbs fracture zone, which is the longest transform plate boundary fault system in the North Atlantic, which offsets the Reykjanes Ridge from the Mid Atlantic Ridge. Here is a…