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GEER Report Now Available: January 9, 2010 Offshore Northern California Earthquake

Following the earthquake of January 9, 2010 offshore Northern California, near Eureka, researchers from numerous institutes and universities worked collaboratively as a GEER team to perform reconnaissance of geological, seismological, and geotechnical aspects of the earthquake effects. The results are summarized in a report recently published on the GEER web site at:

Topics discussed include earthquake description and ground motions; geologic and seismotectonic setting, observed landslides, liquefaction events, ground cracking, and a general discussion of seismic response of structures. Overall, minor occurrences of ground deformations were observed in the region.

Partial support of this effort was provided by the National Science Foundation.

posted February 19, 2010