Category: "Data Availability"

BSL earthquake catalog available in database

December 19th, 2003
The NCEDC is gradually converting the Northern California earthquake catalogs from "flat files" to a database structure. At present, the BSL BDSN catalog is transferred from 1984-present and the information is accessible through a search interface here:… more »

SeismiQuery web interface available

November 15th, 2001
The SeismiQuery program, a web-based program developed by the IRIS DMC, is now available the NCEDC. SeismiQuery provides users with a variety of pre-formatted queries concerning waveform data, instrument response, and channel information database from… more »

USGS Low Frequency Geophysical Data available

October 19th, 2001
October 19, 2001 The Northern California Earthquake Data Center (NCEDC) and the U.S. Geological Survey (USGS) are pleased to announce the availablity of extensive "low frequency" geophysical and fault monitoring data. With National Earthquake Hazards… more »

BK Network data available in SEED format

October 4th, 1999
October 4, 1999 As of October 4, 1999, the NCEDC can distribute all data for the entire BK network in SEED format with complete multi-stage instrument responses. This includes all seismic channels (broadband and strong motion), electric and magnetic… 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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