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Magnitude 5.4 Earthquake near BORREGO SPRINGS, 07 July 2010

  • AUTHOR: Debi Kilb
  • DATE: 2010-07-21


A strongly felt (over 24,000 people reported feeling this earthquake) magnitude 5.4 earthquake occurred at 4:53 PM PST (23:53.32 UTC) located near Borrego Springs, California (33.4235, -116.4728, depth ~17 km). In the first 2 weeks of this sequence there were over 600 aftershocks (pink cubes), of these only 3 were over magnitude 3. The largest aftershock within the first two weeks of the sequence was a magnitude 3.4 on 08 July 2010. This visualization also includes data from the 04 April 2010 magnitude 7.2 Easter earthquake, including the 7.2 mainshock hypocenter (red diamond) and the largest aftershocks (over magnitude 4.0; orange diamonds), and over 4000 aftershocks that occurred within 10 weeks of the mainshock (up until June 24th). Also included are locations of historical seismicity in southern California (~38,000 purple cubes) where we highlight the location of earthquakes of magnitude 4.0 and larger (blue orbs). ANZA seismic station locations (green cylinders), an outline of the state of California (grey lines), known surface fault traces (brown lines), roads in California (purple lines), town location markers (text) and an outline of the Salton Sea (blue lake feature) are also shown. A portion of topography/bathymetry of the region is also included.


Links to websites:
http://eqinfo.ucsd.edu/special_events/2010/188/a/
http://eqinfo.ucsd.edu/special_events/2010/094/a/
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