Map of California & Nevada earthquakes

YBIB - Yerba Buena Island, San Francisco, CA, USA

San Francisco-Oakland Bay Bridge Courtesy of Caltrans

1996/06/28 23:25:00 - 2000/08/24 02:00:00 Latitude: 37.8142 Longitude: -122.3592 Elevation: -27.00 meters

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 renovation 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

Previous Instrumentation

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
    • Year/month/day format
    • Year,doy format
  • Instrument Response
    • SEED format
    • Simplified Responses
• 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
  • SeismiQuery at the NCEDC
  • NetDC Request Form
• Requesting data by channel and time
  • NetDC Request Form
• Requesting data by event
  • EVT_FAST request for NC data

Help on using these tools is available.