The Pasadena Field Office of the US Geological Survey, in cooperation with the Seismological Laboratory at Caltech, is responsible for maintaining the Southern California Seismic Network (SCSN), processing and archiving earthquake information, and conducting scientific research. In addition the office supports a strong motion array, and a GPS array for studies of crustal deformation related to earthquakes. The Southern California Earthquake Center Data Center (SCEC_DC) of the Southern California Earthquake Center (SCEC) works closely with the SCSN to archive data and make it accessable to scientists and the public.
The Pasadena USGS office has a small staff, consisting of seven scientists, four technical support persons, four electronics technicians, and one secretary.
Earth Science in the Public Service For additional earthquake information, try the homepages of the USGS Western Region Headquarters Office in Menlo Park, CA or the USGS National office in Reston, VA.
You can also go directly to the USGS Earthquake Index or the USGS Earthquake Directory.
Most Recent Weekly
Southern California Seismicity Report Most Recent Weekly
Southern California Seismicity Plot Weekly Seismicity Report
Back Issues
Current
Southern California Earthquake List
Current
Southern California Earthquake Plot
Current
Los Angeles Earthquake Plot 
Focal Mechanism and
Peak Ground Acceleration (PGA) Contour Map of Most Recent Significant
Southern California Event
Yearly Earthquake Catalogs (SCSN format) 1932-present
Yearly Earthquake Catalogs (SCECDC format) 1981-present
Current
Northern California Earthquake List
Current
Northern California Earthquake Plot
Other Lists & Plots 
Southern California Seismic Network
description and
map
TERRAscope description and map
GPS Arrays maps and information
Strong Motion Array
Map of Earthquakes of M>3.0 since 1985
(62 kb)
List of Significant California Earthquakes
List of Significant Los Angeles Earthquakes
1994 Southern California Network Bulletin - Includes information about
soon-to-be-released Southern California Earthquakes public brochure &
Network Upgrade project (links to Figures to be added ASAP)
Research Products 
A Preliminary Dislocation Model for the 1995 Kobe, Japan Earthquake (A paper)
1994 Northridge rupture model
1994 Northridge GPS results
Northridge Earthquake - Affects of Ground Tilt and Uplift on Water Systems
Overlapping planes of the 1971 San Fernando & 1994 Northridge,CA
earthquakes
1992 Landers rupture model
ISAIAH - Information on Seismic Activity In A Hurry: Real-time earthquake
monitoring system
Identifying a
Precursor to PcP indicating reflection off a thin (~10km) low velocity
(5-10%) layer above CMB
3-D velocity inversions of
Mt. Pinatubo
3-D velocity inversions of
Rabaul Caldera
Preliminary Dislocation Model for the
Hyogo-ken Nanbu (Kobe) Earthquake (A paper)
Links to
Geographical Survey Institute (GSI) of Japan geodetic results
and other scientific information on the Hyougo-ken Nanbu (a.k.a. Kobe) earthquake
SCEC Phase II Map - Map of earthquake shaking probabilities for southern California,
produced by the Southern California Earthquake Center (SCEC). A full description of the
methods used to compute this map will be published in the April 1995 issue of BSSA.
ABAG Maps of shaking for
customized selections of scenario earthquakes for the San Francisco Bay Area.
This page was last updated 05/25/95.