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Northern California Earthquake Data Center

NCEDC News:


2017/12/12

DART system fully operational

The NCEDC DART archive problems were resolved on 2017/12/08. All continuous data for the days 2017.340-342 (2017/12/06-2017/12/08) have been recovered. The DART now contains a complete set of data and is fully operational.

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2017/12/08

DART system experiencing problems

Our DART system has been experiencing problems since day 2017.340 (2017/12/06). We are currently assessing the situation and working on restoring access to continuous real time data. We apologize for the inconvenience.

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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.

World map of NCEDC data distribution

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