THIS - South End of Cholame Valley, Shandon, 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 THIS
In Operation 2012/05/07 16:25:00 - Present
Elevation: 643.0 meters
Instrumentation Broadband


Site is located on private property off of Davis Road, south of the intersection of SR 41 and SR 46. Station is co-located with PBO GPS station P280.


Berkeley Digital Seismic Network (BK)


Highly varied, including some serpentine under the vault and pier.

Borehole Conditions

This is a TremorScope surface station. The instruments are sited in a 500 gallon plastic tank encased in concrete.

Station Pictures

Pouring concrete during installation of THIS

Pouring concrete during installation of THIS

Engineer standing in the vault at THIS

Engineer standing in the vault at THIS

Table of Seismic Instrumentation

SensorDataloggerSEED ChannelsLocation
BroadbandGuralp CMG-3T Broad Band SeismometerCMG-DM24-EAMBH?,HH?,LH?00
AccelerometerGuralp CMG-5TCCMG-DM24-EAMHN?00