BDM - Black Diamond Mines Park, Antioch, CA, USA

We operate broadband and borehole stations under the network code BK. The Berkeley Digital Seismic Network (BDSN) is a regional network of very broadband and strong motion seismic stations designed to monitor regional seismic activity as well as provide high quality data. The Berkeley borehole stations have borehole geophones or other seismic sensors and may have other geophysical instrumentation.



Station Name BDM
In Operation 1998/11/12 00:00:00 - Present
Latitude
Longitude:
Elevation: 219.8 meters
Instrumentation Broadband

Location

Site is located south of Antioch, California, in a former lignite and sand mine in the Black Diamond Mines Regional Park, under the auspices of the East Bay Regional Park District.

Network

Berkeley Digital Seismic Network (BK)

Geology

Sand

Borehole Conditions

The instruments are sited approximately 150 meters into an old mine tunnel. There is a ~100 meter overburden composed of sandstone, shale, and coal, which limits thermal fluctuations. In addition, 7 centimeters of foam cover the instruments.

Station Pictures

Black Diamond Mines Regional Park

Black Diamond Mines Regional Park

View of equipment rack at BDM

View of equipment rack at BDM

Table of Seismic Instrumentation

SensorDataloggerSEED ChannelsLocation
BroadbandStreckeisen STS-2 VBB Tri-Axial SeismometerQ330HR-GFEBH?,HH?,LH?,VH?00
AccelerometerKinemetrics FBA ES-T Accel. GFE (4 g max 5 v/g)Q330HR-GFEHN?00
AuxiliaryAntennaCurrentQ330HR-GFEVE?00
ClockPhaseQ330HR-GFELC?,VC?00
ClockQualityQ330HR-GFELC?,VC?00
InputVoltageQ330HR-GFEVE?00
SystemCurrentQ330HR-GFEVE?00
SystemTemperatureQ330HR-GFEVK?00
VCOValueQ330HR-GFEVC?00