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JCC - Jacoby Creek, Bayside, CA, USA

View of JCC

View of JCC

2001/04/11 21:27:00 - Present

Latitude: 40.8175
Longitude: -124.0296
Elevation: 27.25 meters

STS-2 at JCC

STS-2 at JCC

Location | Geology | Vault Conditions
Instrumentation | Network | Operation Notes
Noise Characteristics | Data Availability

Location:
Site is located near Jacoby Creek in northwestern California. It sits in a decommissioned rock quarry on property now belonging to Barnum Timber. JCC is the replacement for station ARC.

Geology:
Quaternary Sandstone

Vault/Borehole conditions:
The sensors are located in an insulated shed built into the base of a hill.

Instrumentation:
SensorDataloggerStart DateEnd DateSEED ChannelsLocation
Battery VoltageQ9352001/06/01PresentLE?,UE?
Internal TemperatureQ9352001/06/01PresentUK?
Kinemetrics FBA ES-T Accel. (2 g max 10 v/g)Q9352004/09/02PresentLL?,BL?,HL?
Kinemetrics FBA-23 Accel. (2 g max 1.25 v/g)Q9352001/04/112004/09/02HL?,LL?,BL?
Motorola MPX201 PressureQ9352001/04/11PresentLD?
Streckeisen STS-2 VBB Tri-Axial SeismometerQ9352001/04/11PresentBH?,HH?,LH?,UH?,VH?
Streckeisen STS-2 VBB Tri-Axial SeismometerQ9352001/06/01PresentUM?
YSI 44031 ThermistorQ9352001/04/11PresentLK?

Network:
BK (Berkeley Digital Seismic Network)

Operation Notes: (may not be current)
This section summarizes major changes in equipment or in instrumentation at JCC.

  • 06/15/2004: Changed BH channels sampling rate to 40 Hz.
  • 04/12/2001: Instrumentation installed.

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
1999 PSD 2000 PSD 2001 PSD 2002 PSD 2003 PSD 2004 PSD 2005 PSD

Data Availability:
BDSN waveforms and associated metadata are available at the Northern California Earthquake Data Center (NCEDC).

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.

BDSN Overview | Map | Table



Berkeley Seismological Lab
215 McCone Hall, UC Berkeley
Berkeley CA 94720-4760
www@seismo.berkeley.edu

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Last modified: Wed Jun 25 13:34:08 PDT 2008