Product Summary
GPS | Other geophysical data | Synthetic Aperature Radar
This document provides a complete overview of all NCEDC products. Other documents describe the data by type, by contributing network, and by access.
Current Earthquake Information
Current earthquake information for northern and central California is available from the joint effort of the USGS and BSL as part of the California Integrated Seismic Network.
| Current Earthquake Information | ||
| Information type | Region | Time period |
|---|---|---|
| Map of recent events | California & Nevada | Last 7 days |
| List of recent earthquakes | California & Nevada | Last 7 days |
| Did you feel it? Report on an earthquake | California | Recent and historical |
| ShakeMap | Northern California | Recent and historical |
| ShakeMap | Southern California | Recent and historical |
| NCSN Seismocams | Northern California | Current |
| BDSN Seismocams | Northern California | Current |
| SCSN Seismocams | Southern California | Current |
| Make Your Own Seismogram | Northern California | Current and historical |
Catalogs
The NCEDC provides access to several different earthquake catalogs. At the present time, both the USGS and the BSL produce earthquake catalogs for northern California and these may be accessed through the Web. The USGS and the BSL are working to generate a single, authoritative catalog and hope to have this available soon. In additional, catalogs associated with the Geysers and Parkfield networks are available and these are useful as entry points into the waveform data. Finally, the NCEDC hosts the ANSS composite earthquake catalog.
| Catalogs | |||||
| Agency/Network | Region | Data type | Time period | Access | Formats |
|---|---|---|---|---|---|
| BSL | Northern California & surrounding areas |
hypocenters, magnitudes, phase and amplitude readings | 1910-present (hypo and mag) 1984-present (phase and amp) |
Searchable Web interface | |
| BSL | Northern California & surrounding areas |
moment tensors | 1990-present | Text file | |
| USGS | Northern California | hypocenters & magnitudes phase and amplitude readings first-motion mechanisms |
1967-present | Searchable Web interface | |
| Townley-Allen Catalog | Northern California & surrounding areas |
hypocenters | 1769-1927 | Text file | |
| BSL HRSN |
Parkfield | hypocenters | 1987-1998 | Text file | |
| Calpine/Unocal Geysers | Geysers | hypocenters & magnitudes | 1995-1998 | Text file | - |
| ANSS | Global | hypocenters & magnitudes | 1898-present | Searchable Web interface
FTP |
|
Seismic Waveform Data
Several networks contribute waveform data to the NCEDC. The NC and BK networks span northern California, while localized networks focus on the Gesyers, the Hayward Fault, and Parkfield. Data from the Hayward fault stations are folded into the BDSN and NCSN, while data from the HRSN and Calpine/Unocal Geysers network are not. - More information
| Seismic Waveforms | ||||||
| Network | Region | Instrumentation | Data type | Time period | Access | Documents |
|---|---|---|---|---|---|---|
| BDSN (BK) | Northern California | Broadband and strong motion | Continuous and event triggered | 1986-present | Searchable Web interface |
|
| NCSN (NC) | Northern California | Short-period, strong motion, and some broadband | Continuous and event triggered | 1984-present | Searchable Web interface |
|
| NHFN (BK) | Northern Hayward Fault | Borehole acceleration and velocity | Continuous and event triggered | 1996-present | Searchable Web interface |
|
| SHFN (NC) | Southern Hayward Fault | Borehole acceleration and velocity | Event triggered | 1994-present | Searchable Web interface |
|
| MPBO (BK) Mini-Plate Boundary Observatory Project |
San Francisco Bay Area | Borehole velocity and strain | Continuous and event triggered | 2001-present | Searchable Web interface |
|
| HRSN (BP) | Parkfield | Borehole velocity | Event triggered and continuous | 1987-1998 1999-2000 2001-present |
Research account
Not available at this time Searchable Web interface |
|
| Calpine/Unocal (UG) | Geysers | Borehole velocity | Event triggered | 1989-1998 | Research account | |
| MOBB (BK) Monterey Ocean Bottom Broadband Observatory |
Monterey Bay | Ocean bottom seismometer | Event triggered | 1997; 2002-present | Research account |
|
| SAFOD (SF) San Andreas Fault Observatory at Depth |
Parkfield area | Borehole sensors | Event triggered | 2002-present (various periods) | Searchable Web interface |
|
Global Positioning System (GPS)
Data from the BARD network of continuous-monitoring GPS receivers are archived at the NCEDC. An effort is currently underway to archive survey-mode GPS data in the Western United States, primarily from the USGS. - More information
| GPS | |||||
| Network/Authority | Region | Mode | Data types | Time period | Access |
|---|---|---|---|---|---|
| BARD | Northern California | Continuous | Raw, RINEX, and Site logs | 1992-present | FTP |
| USGS survey-mode GPS | Western US | Survey | Raw, RINEX, and Site logs | 1992-present | FTP |
Other Geophysical Data
Fault-monitoring data from the USGS and its collaborators is one of the newest data sets at the NCEDC. In addition to this data, some sites in the BK network have additional geophysical sensors. In particular, the mini-Plate Boundary Observatory Project is a deployment of strain meters, borehole seismometers, and continuous GPS. - More information
| Other Geophysical Data | |||||
| Network/Authority | Region | Data types | Time period | Access | Documents |
|---|---|---|---|---|---|
| USGS fault monitoring (UL) | Primarily California | Strain, creep, magnetic field, etc. | 1975-present | Searchable Web interface | |
| BK | Northern California | Temperature, pressure, strain, electric field, magnetic field | 1994-present | Searchable Web interface |
|
| PB | Western United States | Strain and environmental data | 2005-present | Searchable Web interface (not yet!) |
|
Synthetic Aperature Radar
The Western north America Interferometric Synthetic Aperature Radar Consortium (WInSAR) represents a collection of universities and public agencies in the acquisition and archiving of synthetic aperture radar (SAR) data. Scenes are only available to member institutions. - More information
| WInSAR | ||||
| Network/Authority | Region | Data types | Time period | Access |
|---|---|---|---|---|
| WInSAR | North America | Synthetic Aperature Radar scenes | ????-present | Searchable web interface, text (Restricted access to scenes) |
GPS | Other geophysical data | Synthetic Aperature Radar
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Northern California Earthquake Data Center
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Copyright 1995-2005, The Regents of the University of California.
Last modified: Mon Dec 17 17:31:07 PST 2007