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Supporting Networks

Stations from number of networks function in support of Northern Califormia Earthquake Management Center operations. The NCEDC archives waveform data from a subset of stations for each of these networks. In addition, complete or partial archives of supporting networks that are no loger running are also available from the NCEDC archive.

Supporting Networks:

UC San Diego ANZA Network (AZ)
Leo Brady Seismic Network (LB)
California Geological Survey Network (CE)
Southern California Seismic Network (CI)
University of Reno, Nevada Network (NN)
National Strong Motion Program/Project, NSMP (NP)
EarthScope Transportable Array, USArray (TA)
University of Oregon Regional Seismic Network (UO)
United States National Seismic Network, USNSN (US)
Pacific Northwest Seismic Network, PNSN (UW)

Historically Supporting Networks: Los Angeles Basin Seismic Network (LA)

Data access
All of the archived data for these supporting networks is in SEED or miniSEED format and can be queried for and retrieved using our standard tools:

Several tools provide access to SEED format data at the NCEDC, both in terms of querying the archives and allowing data requests.

Help on using these tools is available.

Supporting Networks Currently Being Archived at the NCEDC

UC San Diego ANZA Network (AZ)

The ANZA Realtime Broadband Array, run by UC San Diego, is a broadband array crossing the San Jacinto and Rose Canyon fault zones in Southern California. The NCEDC archives waveform data from a small subset of these stations.

Leo Brady Seismic Network (LB)

Operated by Sandia National Laboratories, the Leo Brady Seismic Network consists of a few stations in Nevadah, Utah, and California, surrounding the Nevada Test Site. The NCEDC archives data from one station, DAC, in Darwin, CA.

California Geological Survey Network (CE)

The NCEDC has historically archived data for a handful of California Geological Survey stations; however, only station 53783 in Gilroy, CA is currently being archived.

Southern California Seismic Network (CI)

In 2004, the NCEDC started to archive broadband and strong motion data from 15 SCSN (network CI) stations that are telemetered to the Northern California Earthquake Management Center (NCEMC) of the California Integrated Seismic Network (CISN). These data are used in the prototype real-time state-wide earthquake processing system and also provide increased coverage for Northern California events. Since the data are telemetered directly from the stations in real time to both the SCSN and to the NCEMC, the NCEDC archives the NCEMC's copy of the data to ensure that at least one copy of the data will be preserved. Due to reduced state funding, the SCSN has gradually reduced the number of directly telemetered stations to 4. However, beginning in November 2014, the NCEDC is again archiving a copy of the data from the 11 other original stations, delivered via T-1 line from the data center at SCEC.

In early 2006, the NCEDC started to continuously archive some of the selected SCSN short-period stations that are contributed to the NCSN. All of these data are also available in real time from the NCEDC DART. In 2009, the NCEMC started incorporating data from ~25 additional SCSN stations near the southern border of the NCEMC monitoring area in its event waveform collection to provide better azimuthal coverage of events in that area. In 2009-2010, the NCEMC also started retrieving event waveform data from the SCSN for other SCSN stations that are expected to receive signals from Northern California earthquakes. All of these event waveforms are also archived at the NCEDC.

The SCEDC is the authoritative archive for all CI data.

University of Reno, Nevada Network (NN)

The University of Reno in Nevada (UNR) operates several broadband stations in western Nevada and eastern California that are important for Northern California earthquake processing and analysis. Starting in August 2000, the NCEDC has been receiving and archiving continuous broadband data from selected UNR stations. In early 2006, the NCEDC started to archive continuous data from the UNR short-period stations that are contributed to the NCSN. Both the broadband and short-period UNR stations are available in real time through the NCEDC DART. The University of Nevada, Reno, operates a network with broadband, strong motion, and short period sensors located in western Nevada and eastern California. The NCEDC archives waveform data spanning a subset of channels from a portion of these stations.

The IRIS DMC archives all data from the UNR regional seismic network. This includes data from the short-period network as well as the broadband stations.

National Strong Motion Program/Project, NSMP (NP)

The NSMP network operates strong motion sensors at over 700 stations throughout the US and Carribean for the purpose of recording damaging earthquakes. The NCEDC archives continuous waveform data from a handful of these stations, and event data for events in northern and central California.

EarthScope Transportable Array, USArray (TA)

The Earthscope Transportable Array is a network of 400 temporary stations being deployed in stages across the continental US and Alaska. Since 2011, the NCEDC currently archives waveforms from a small number of these stations sited in southern Oregon and far northern California. The archive also contains data from the Transportable Array's initial deployment across northern and central California in 2005-2007.

The IRIS DMC is the primary archive for USArray data.

University of Oregon Regional Seismic Network (UO)

The NCEDC archives data from station DBO in Dodson Butte, OR.

United States National Seismic Network, USNSN (US)

The NCEDC archives data from USNSN stations ELK in Elko, NV and WVOR in Wild Horse Valley, OR. The archive contains 1994-2006 data for station MNV (Mina, NV).

Pacific Northwest Seismic Network, PNSN (UW)

The PNSN is Operated by the University of Washington. The NCEDC archives data from a small subset of PNSN stations that contribute to the NCSS.

Historic Supporting Networks Archived at the NCEDC

Los Angeles Basin Seismic Network (LA)

In 1988, the NCEDC archived ~40 days of data from two stations in the Los Angeles Basin Seismic Network: DHB near Culver City and GFP near the Hollywood Reservoir.