Category: "Earthquake Locations"

Calpine/LBL Geysers data added to the NCEDC

April 3rd, 2004
The NCEDC is pleased to announce the availability of seismic phase and waveform data from the Calpine/Lawrence Berkeley Labs seismic network that monitors seismicity in the vicinity of the Geysers geothermal field. The phase data begins 2003/04/04.… more »

Earthquake Catalog Search and Map

January 8th, 2003
January 8, 2003 In response to requests from many teachers, the NCEDC has created an experimental earthquake catalog search which provides seismicity maps as well as lists of earthquakes. The simplified search allows a user to select a catalog and one… more »

Revision of NCSN Catalog

April 20th, 1997
April 29, 1997 On April 29, 1997, the USGS Northern California Seismic Network (NCSN) revised the format and relocated the entire earthquake catalog at the Northern California Earthquake Data Center. We undertook the catalog revision for the following… more »

Change in NCSN Earthquake Catalog

August 1st, 1995
The USGS Northern California Seismic Network (NCSN) has implemented a new policy regarding the archival of automatically timed (RTP) earthquake data in their catalog at the NCEDC. The RTP is an automated system that automatically picks seismic phases,… more »

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