Map
of California & Nevada earthquakes
JAS1 - Jamestown, CA, USA
No photos are currently available |
1984/07/26 00:00:00 - 1986/10/24 23:59:00
Latitude: 37.9266
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No photos are currently available |
Location |
Geology |
Vault Conditions
Instrumentation |
Network |
Operation Notes
Noise Characteristics |
Data Availability
- Location:
-
Site is located in Jamestown, California. The equipment
from JAS was relocated to JAS1 07/03/1984, and
then from JAS1 to CMB on 11/06/1986, at which
time JAS1 was closed.
JAS1 (and JAS) were part of the USGS Digital World Wide Standard Seismograph Network (DWWSSN), the digital descendant of the WWSSN.
- Geology:
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Alluvium
- Vault/Borehole conditions:
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Seismometers were temporarily located in a garage on a
concrete floor while looking for a more permanent location. This site was noisy.
- Instrumentation:
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Sensor Datalogger Start Date End Date SEED Channels Location Teledyde Geotech T210 LP V Seismometer DWSSN 1984/07/26 1986/10/24 MH?,LH? Teledyne Geotech S13 SP V Seismometer DWSSN 1984/07/26 1986/10/24 BH? Teledyne Geotech T200 LP H Seismometer DWSSN 1984/07/26 1986/10/24 MH?,LH? - Network:
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BK (Berkeley Digital Seismic Network)
- Operation Notes: (may not be current)
- This section summarizes major changes in equipment or in instrumentation at JAS1.
- 11/06/1986: Station closed; instruments relocated to CMB.
- 07/03/1984: Benioff and Teledyne Geotech instruments relocated to JAS1 from JAS.
- Noise Characteristics:
-
The figures below are cumulative plots of power spectral density (psd)
determined from the broadband channels. In each figure, the vertical
component psd is plotted with blue diamonds, the north component
psd with red squares, and the east component psd with green circles.
The results are presented in the 5 different frequency bands, and
the USGS/Albuquerque low noise model is plotted as a dashed line in each.
The PSD units are in dB (decibel) relative to 1 (m/s**2)**2/Hz. The current
annual plot is updated weekly.
Cumulative PSD results 1999 2000 2001 2002 2003 2004 2005 
- Data Availability:
- BDSN waveforms and associated metadata are available at the
Northern California Earthquake Data Center (NCEDC).
- Map of BDSN stations
- Table of BDSN stations
- BK Information Directory, including
- List of station locations
- List of available channels
- Instrument Response
- Information on Quanterra Timing Errors
- Information on Quanterra 4120 FIR Filter changes - 6/30/2003
- Information on BH sampling rate change - 06/15/2004
- View digital seismograms
Several tools provide access to SEED format data at the NCEDC, both in terms of querying the archives and allowing data requests.- Querying the archives
- Requesting data
Help on using these tools is available.
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Berkeley Seismological Lab
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Copyright 1995-2005, The Regents of the University of California.
Last modified: Wed Jun 25 13:34:08 PDT 2008