Where else would we get a focal mechanism or moment tensor for an earthquake of such a small magnitude! We are so lucky. This is the USGS web page for the earthquake. We get Gorda plate earthquakes frequently and most…
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…
Tohoku-Oki Aftershocks Continue
The aftershocks continue offshore northeast Japan. The recent swarm appear to align along a northwesterly strike (trend). Here is the USGS web page for the earthquake from today. This is the USGS web page for the largest magnitude earthquakes in…
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…
Sandwich Earthquakes in Scotia, mmmmm
We have had a swarm of earthquakes near the Sandwich Islands along the Scotia subduction zone, an oceanic subduction zone. Here is the USGS web page for this earthquake. Here is a map showing the regional tectonic setting with relative…
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…
Panama fracture zone strikes again
We have another earthquake along the Panama fracture zone (PFZ) plate boundary. There are numerous sub-parallel transform (strike-slip) faults in this region. The most recent earthquake is a M = 5.7 and is plotted as the most southerly orange dot…
Jan 31, 2015 Panama fracture zone shakes it up
There was another earthquake along the Panama fracture zone today, following a couple from earlier in the month. Today, there was a Mb 5.1, while on 1.16/2015 there was a Mw 6.6. There was a swarm along strike with the…