YBH - Yreka Blue Horn Mine, Yreka, CA, USA
Entrance to YBH adit
1993/07/24 01:03:00 - Present
Typical STS-1 installation
Site is located in the Klamath
YBH is an auxillary station used by the Prepatory Commission for the Comprehensive Test Ban Treaty Organization. The STS-2 installed in 2002 supports CTBTO activities.
- Vault/Borehole conditions:
The sensors are located in an
abandoned mining adit, approximately
115' from the entrance, on a poured
concrete pier. Approximately 75
meters of overburden cover the adit.
The seismometers are thermally
insulated with 2" of polyurethane
foam. The datalogger and supporting
equipment are located approximately
50' from the entrance to the adit.
Sensor Datalogger Start Date End Date SEED Channels Location AntennaCurrent Q330HR-GFE 2011/06/03 Present VE? 00 ClockPhase Q330HR-GFE 2011/06/03 Present LC?,VC? 00 ClockQuality Q330HR-GFE 2011/06/03 Present LC?,VC? 00 InputVoltage Q330HR-GFE 2011/06/03 Present VE? 00 Kinemetrics FBA ES-T Accel. (2 g max 10 v/g) Q330HR-GFE 2011/06/03 Present HN? 00 Streckeisen STS-1/E300 VBB Feedback Seismometer Q330HR-GFE 2011/06/03 Present BH?,HH?,LH?,VH? 00 SystemCurrent Q330HR-GFE 2011/06/03 Present VE? 00 SystemTemperature Q330HR-GFE 2011/06/03 Present VK? 00 VCOValue Q330HR-GFE 2011/06/03 Present VC? 00 Streckeisen STS-2 VBB Tri-Axial Seismometer Q330 2011/10/20 Present BH?,HH?,LH?,VH? 50
The YBH site also is home to a continuously operating GPS receiver (YHBB) as part of the BARD network.
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.