BKS - Byerly Seismographic Vault, Berkeley, CA, USA
Entrance to Byerly adit
1987/05/05 00:00:00 - Present
Typical STS-1 installation
Site is located in Strawberry Canyon, just east of the
UC Berkeley campus,
in an installation known as Byerly Seismographic Vault.
The vault was constructed in 1962 in order to relocate
instruments from Haviland Hall (station BRK),
as "cultural" noise levels were growing in amplitude.
The first digital broadband instrumentation was installed
In addition to the UC Berkeley instrumentation, this vault is home to USGS tiltmeters and a UREDAS system. This site is frequently used for instrument testing and calibration.
Miocene Claremont cherts and shales
- Vault/Borehole conditions:
The instruments are sited in the Byerly Seismographic Vault
in Strawberry Canyon. The vault is a 105 foot adit dug
horizontally at a NW azimuth into the side of a hill.
The piers are constructed of reinforced concrete in the rear
of the vault and are not isolated from floor and walls.
The vault is thermally stable and a ventilating/dehumidifying
system is connected to all rooms. There are three
interior doors leading to the room housing the seismometers.
The seismometers are thermally insulated with 4 inches of
Sensor Datalogger Start Date End Date SEED Channels Location AntennaCurrent Q330HR-GFE 2011/02/25 Present VE? 00 ClockPhase Q330HR-GFE 2011/02/25 Present LC?,VC? 00 ClockQuality Q330HR-GFE 2011/02/25 Present LC?,VC? 00 InputVoltage Q330HR-GFE 2011/02/25 Present VE? 00 Kinemetrics FBA ES-T Accel. GFE (2 g max 10 v/g) Q330HR-GFE 2011/02/25 Present HN? 00 Streckeisen STS-1/E300 VBB Feedback Seismometer Q330HR-GFE 2011/02/25 Present BH?,HH?,LH?,VH? 00 SystemCurrent Q330HR-GFE 2011/02/25 Present VE? 00 SystemTemperature Q330HR-GFE 2011/02/25 Present VK? 00 VCOValue Q330HR-GFE 2011/02/25 Present VC? 00
BK (Berkeley Digital Seismic Network)
- Noise Characteristics:
- Network PDF Noise Analysis Plots
- 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
- 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
- Querying the archives
- Requesting data by channel and time
- Requesting data by event
Help on using these tools is available.