Map
of California & Nevada earthquakes
YBIB - Yerba Buena Island, San Francisco, CA, USA
San Francisco-Oakland Bay Bridge |
1996/06/28 23:25:00 - 2000/08/24 02:00:00
Latitude: 37.8142
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Installation of HFN borehole package at BRIB |
Location |
Geology |
Vault Conditions
Instrumentation |
Network |
Operation Notes
Noise Characteristics |
Data Availability
- Location:
-
BBEB is one of the bridge sites of the
Northern Hayward
Fault Network. The borehole is located on Yerba Buena
Island, near the
San
Francisco - Oakland Bay Bridge.
This site is operated under
the auspices of Caltrans
and the City of San Francisco.
YBIB has been offline since August 24, 2000, when rennovation on the island cut power cables. We hope to restore this station in the future.
- Geology:
-
Franciscan
- Vault/Borehole conditions:
-
The borehole extends to a depth of 61 m.
- Instrumentation:
-
Sensor Datalogger Start Date End Date SEED Channels Location Oyo GeoSpace GS-11 Vertical Geophone Q4120 1996/06/28 2000/08/24 EP?,BP?,DP?,LP? Wilcoxon 731A Accel. (0.5 g max 10 v/g) Q4120 1996/06/28 2000/08/24 BL?,HL?,CL?,LL? - Network:
-
BK (Northern Hayward Fault Network)
- Operation Notes: (may not be current)
- This section summarizes major changes in equipment or in instrumentation at YBIB.
- 08/24/2000: Power failed at YBIB. The station is down until a solution can be found.
- 04/11/2000: Antenna and cable installed for telemetry to MOLA (part of BARD network).
- 11/04/1999: Q4120 upgraded with MSHEAR software.
- 09/03/1999: Replaced Freewave radio with Cylink radio.
- 04/28/1999: Replaced disk in Q4120.
- 07/01/1998: All equipment repaired and reinstalled.
- 02/08/1998: Lightning strike caused instrumentation problems; datalogger removed and sent to Quanterra for repair. This caused a failure in the vertical component of the geophone.
- 01/09/1998: GPS clock antenna reinstalled to fix clock problem.
- 11/26/1996: Q4120 datalogger reinstalled after replacement of 10 amp fuse.
- 06/28/1996: Station instrumentation installed.
- Noise Characteristics:
-
No noise information for YBIB is available at this time.
- Data Availability:
- BDSN waveforms and associated metadata are available at the
Northern California Earthquake Data Center (NCEDC).
- Map of NHFN stations
- Table of NHFN stations
- BK Information Directory, including
- List of station locations
- List of available channels
- Instrument Response
- Information on Quanterra Timing Errors
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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Last modified: Wed Jun 25 13:34:08 PDT 2008