BRK - Haviland Hall, Berkeley, CA, USA
Haviland Hall, UC Berkeley
1996/08/16 00:00:00 - Present
Typical STS-2 installation
BRK is located on the campus of UC Berkeley
in Haviland Hall.
Over the years, recording at 4 separate sites on campus have used
the station name BRK - the Student Observatory (beginning in 1887),
Bacon Hall, Doe Library, Haviland Hall, and McCone Hall.
BRK was one of the original sites for the Wood-Anderson seismographs deployed in 1930. The Wood-Andersons were operated at this site until they were relocated to BKS in 1962.
Jurassic/Cretaceous Franciscan sandstone
- Vault/Borehole conditions:
The instruments are sited in the sub-basement of
(a 2-story building) on the UC Berkeley
campus. The piers were constructed when the building was built
and were used over a number of years for various seismic
instruments. In 1962, the Byerly vault was constructed and most of the
critical instrumentation was relocated to BKS. The
Seismological Laboratory decided to re-occupy the
BRK site in 1994, in order to record data for
comparison with historical paper records.
This site is in an occupied building and is frequently noisy (particularly at high frequencies) during working hours. Although data acquisition began in 1994, only selected events were saved. Archiving of the data as a BDSN site began on 8/16/1996.
Sensor Datalogger Start Date End Date SEED Channels Location AntennaCurrent Q330HR-GFE 2010/04/20 Present VE? 00 ClockPhase Q330HR-GFE 2010/04/20 Present LC?,VC? 00 ClockQuality Q330HR-GFE 2010/04/20 Present LC?,VC? 00 InputVoltage Q330HR-GFE 2010/04/20 Present VE? 00 Kinemetrics FBA ES-T Accel. GFE (2 g max 10 v/g) Q330HR-GFE 2010/04/20 Present HN? 00 Streckeisen STS-2 VBB Tri-Axial Seismometer Q330HR-GFE 2010/04/20 Present BH?,HH?,LH?,VH? 00 SystemCurrent Q330HR-GFE 2010/04/20 Present VE? 00 SystemTemperature Q330HR-GFE 2010/04/20 Present VK? 00 VCOValue Q330HR-GFE 2010/04/20 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.