http://seismo.berkeley.edu/bard/bard.html

Bay Area Regional Deformation Network

简称BARD，有32个连续运行站，数据下载地址：ftp://www.ncedc.org//pub/gps/rinex

BARD is a network of 32 continuously operating Global Positioning System receivers in Northern California. The primary goal of the network is to monitor crustal deformation across the Pacific-North America plate boundary and in the San Francisco Bay Area for earthquake hazard reduction studies and rapid earthquake emergency response assessment. Join the BARD-info mailing list for network announcements, including information on station upgrades, outages and other problems and new data products, such as real-time streaming.

Station Information

BARD Station List
Download KML file of BARD sites
Map of BARD sites
Site Logs (receiver and antenna type history)

Data Access

Receiver data, both raw and RINEX 24-hour files, are archived and available at the NCEDC. The raw and RINEX data files are in day-of-year directories in either our normal (lowrate) or highrate directories. Site logs are also available at the NCEDC. More station information, including timeseries and data quality evaluation information, is available for BARD backbone sites.

Many of the BARD stations have been upgraded to highrate (1 sample/second) sampling. For highrate sampling, we archive the raw data at highrate, and archive decimated lowrate (1 sample every 15 seconds) RINEX files. For stations that still sample every 15 or 30 seconds, we archive both the raw and RINEX data at that sample rate. We only archive highrate RINEX data for selected stations where we receive only the RINEX data files.

See hints for using ftp to retrieve data in compressed or uncompressed format.

Real-Time Streaming
Lowrate Data (15 or 30 second sampling)
- Raw (for selected sites)
- RINEX (15 second or 30 second RINEX)
Highrate Data (1 sample per second sampling)
- Raw (for selected sites)
- RINEX (for selected sites)
Holdings listed by GPS Week (see Calendar)

When you use data from the NCEDC or BARD network, please provide a proper acknowledgement of the data source.

Analysis

The data are analyzed at the U.S. Geological Survey to find the relative displacements of the stations:

Results

Data from the BARD network may also be used for surveying applications. For legal purposes, the BSL relies on adjustments performed by the California Spatial Reference Center (CSRC), in partnership with the National Geodetic Survey, to provide precise NAD83 reference frame coordinates suitable for use by the surveying community. Many of the BARD stations are included in a 2000 adjustment following the Hector Mine earthquake, which were officially sanctioned by NGS in March 2001. These coordinates can also be obtained from NGS.

Reports

Report on the Mini-PBO Borehole Adapter for GPS
Publications
- Measuring Broadscale Deformation in Northern California and Nevada from Plate Motions and Elastic Strain Accumulation,Murray and Segall (2001)
BARD Project Reports
- 2007 USGS Annual Project Summary (pdf)
- 2004-2006 Final Report (pdf)
- 2001-2004 Final Report (pdf)
- 2001 USGS Annual Project Summary (pdf)
- 2000 USGS Annual Project Summary (pdf)
- 1999 USGS Annual Project Summary (pdf)
- 1998 USGS Annual Project Summary

Collaborations

The BARD network is a collaborative effort of the:

U.C. Berkeley Seismological Laboratory
U.S. Geological Survey
Stanford
U.C. Davis
U.C. Santa Cruz
Trimble Navigation
Ashtech
Lawrence Livermore National Laboratory
U.S. Coast Guard
National Geodetic Survey
Scripps Institution of Oceanography
Jet Propulsion Laboratory

Other useful links

Crustal Deformation
- Northern California - USGS Menlo Park
- Southern California - USGS Pasadena
- USGS Real-time Monitoring
GPS
- GPS - General GPS information
- CDDIS - NASA Crustal Dynamics Data Information System
- IGS - International GPS Service for Geodynamics
- SOPAC - Scripps Orbit and Permanent Array Center
- SCIGN - Southern California Integrated GPS Network
- NGS - National Geodetic Survey
- BARGEN - Basin and Range Geodetic Network
- UNAVCO - University NAVSTAR Consortium
- PANGA/CWU - Pacific Northwest Geodetic Array, Central Washington University
- PANGA/UW - Pacific Northwest Geodetic Array, University of Washington
- WDCA/PGC - Western Canada Deformation Array, Pacific Geoscience Center
- NCGPSUG - Northern California GPS Users Group
- CGCC - California Geodetic Control Committee
- CSRC - California Spatial Reference Center

Please send comments and questions to bard@seismo.berkeley.edu.

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美国加州北部区域性海湾变形监测网

Bay Area Regional Deformation Network

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