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Northern California Earthquake Data Center

NCEDC News:

2017/10/20

All BG stations online again

All BG stations from the planned Calpine power outage are online again. Data resumed flowing to around 2017/10/17 19:24 UTC.

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2017/10/13

EVT_FAST, NETDC & STP services to be retired (December 2017)

The NCEDC offers a number of web services that provide improved functionality formerly served by the EVT_FAST, NETDC & STP systems.

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2017/10/04

14 BG stations offline due to planned power outage

14 BG stations are currently offline due to planned Calpine power outage at their radio repeater. Last data received was at 2017/10/03,20:14 UTC (13:14 PDT). List of stations affected:

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2017/09/29

WR data back online after >3 day outage

Network WR was offline for a few days due to server migration at DWR.

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World map of NCEDC data distribution

World map of NCEDC data distribution (Click to view larger.)

The Northern California Earthquake Data Center (NCEDC) is a permanent archive and distribution center primarily for multiple types of digital data relating to earthquakes in central and northern California. The NCEDC is located at the Berkeley Seismological Laboratory, and has been accessible to users via the Internet since mid-1992. The NCEDC was formed as a joint project of the Berkeley Seismological Laboratory (BSL) and the U.S. Geological Survey (USGS) at Menlo Park in 1991, and current USGS funding is provided under a cooperative agreement for seismic network operations.

Time series data come from broadband, short period, and strong motion seismic sensors, and geophysical sensors such as electromagnetic sensors, strain meters, creep meters, pore pressure, water level, and wind speed sensors. Earthquake catalogs can include time, hypocenter, magnitude, moment tensor, mechanisms, phase arrivals, codas, and amplitude data. GPS data are available in both raw observables and RINEX formatted data.

The NCEDC also provides support for earthquake processing and archiving activities of the Northern California Earthquake Management Center (NCEMC), a component of the California Integrated Seismic Network (CISN). The CISN is the California regional organization of the Advanced National Seismic System (ANSS).

The NCEDC is managed by Douglas Neuhauser under the direction of the BSL Director Richard Allen. Stephane Zuzlewski, Mario Aranha, Taka'aki Taira, Jennifer Taggart, and Peggy Hellweg of the BSL and Lind Gee, Hal Macbeth, Lynn Dietz, and Fred Klein of the USGS Menlo Park contribute to the operation of the NCEDC.

If you use data from the NCEDC, we ask that you acknowledge the data center and the organizations that contributed the data.

We encourage you to contact us with questions, comments and feedback concerning the NCEDC. You can reach us vis email at ncedcinfo@ncedc.org or fill out our comments form.