Category: "Catalogs"

Announcement: Acknowledging the NCEDC and Berkeley networks

August 2nd, 2017
Below please see instructions for acknowledging the NCEDC, the BDSN (BK) network, the HRSN (BP) network, and the BARD network if you use this data in your research. You can also find all of this information, as well as a table of other organizations… more »

Announcement: Acknowledging the NCEDC and Berkeley networks

August 2nd, 2017
Below please see instructions for acknowledging the NCEDC, the BDSN (BK) network, the HRSN (BP) network, and the BARD network if you use this data in your research. You can also find all of this information, as well as a table of other organizations… more »

NCEDC Catalogs snapshot available on Github

June 6th, 2017
The NCEDC is pleased to announce the availability of daily snapshots for the earthquake parameters catalog of the Northern California Seismic System through GitHub. This means that at any time the catalog can be retrieved as it was on a given date. The… more »

The NCSS now reports earthquake depth relative to the geoid (sea level)

October 7th, 2015
Starting 2015/10/07, the Northern California Seismic System (NCSS) is reporting earthquake depths relative to the earth geoid surface (which is approximately mean sea level) instead of the previously used surface of the velocity model used to locate the… more »

Geoid Depth FAQ

October 7th, 2015
What is Geoid depth? The depth of an earthquake location can be reported relative to the mathematical geoid surface within the earth, which is very close to sea level. In simplified terms, the geoid is an imaginary surface within the earth… more »

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