Swarm on San Andreas
Posted by JAC on 6/25/2011, 12:09 pm
  June 25, 2011 -San Francisco A small swarm of tremors have erupted in Northern California over the last 7 hours. The depth of the earthquakes, all measuring under the 3.1 magnitude is incredibly shallow- ranging from a depth of 0 to 8.7 km. The straight-line pattern eruption of the quakes also reveal they are occurring along the San Andreas Fault line which is a transform fault between the North American and the Pacific Plates. The quakes indicate stress from a southward movement of the American Plate along the fault. What is perhaps even more interesting is the last quake in the swarm, a 2.7 magnitude earthquake in San Francisco (37 lat, 122 long) at a depth of 8 km, is virtually the identical spot and depth of the epicenter of the 7.9 San Francisco earthquake which struck in 1906 and killed about 3,000 people. http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/nc71590005.php http://quakes.globalincidentmap.com//map_detail.php?id=119014 |
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In this thread:
- Re: Swarm on San Andreas - ArgosyTn, 6/28/2011, 11:58 am
- Re: Swarm on San Andreas - JAC, 6/28/2011, 12:04 pm
- Local Triggering of Quakes - JAC, 6/28/2011, 9:32 am
- 300 years of pent up stress - JAC, 6/28/2011, 6:21 am
- Re: Swarm on San Andreas - ArgosyTn, 6/27/2011, 11:30 am
- New Modulation - JAC, 6/27/2011, 10:01 pm
- Scientists Say California Mega-Quake Imminent - JAC, 6/27/2011, 3:39 pm
- Re: Swarm on San Andreas - JAC, 6/27/2011, 11:50 am
- More shallow action on the fault - JAC, 6/27/2011, 10:41 am
- Interesting TEC Anomaly approaching CA. OLR thru the roof. - JAC, 6/25/2011, 6:11 pm
- Fox Island Quake may have been a trigger - JAC, 6/25/2011, 12:15 pm
- Understanding the Magnitude 7.2 Alaska earthquake - JAC, 6/25/2011, 3:26 pm
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