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San Ramon Swarm: Map of background seismicity
This map illustrates the Nov 2002 San Ramon swarm in the context of historical seismicity. Earthquakes from the USGS catalog 1970-2002 are plotted, with events of ML >= 4.0 plotted with large circles. Events associated with various sequences are plotted in color: 1970 Danville (blue), 1976 Danville (tourquoise), 1980 Livermore (yellow), and 1990 Alamo (green). Events from the 2002 swarm are plotted in red.
CISN Earthquake Reports
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Northern California Management Center |
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Last modified: Mon Jul 25 14:18:51 PDT 2011