MIN - Mt. Lassen Park Headquarters, Mineral, 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 MIN
In Operation 1993/03/19 19:46:00 - 1999/12/08 18:10:00
Elevation: 1470.9 meters
Instrumentation Broadband


Site is located in Lassen Volcanic National Park, Mineral, California. The instruments were relocated to station MOD in late 1999 due to increasing noise.

The MIN site was first occupied in 1938, with the installation of Wood-Anderson seismographs.


Berkeley Digital Seismic Network (BK)


Pliocene Volcanic Debris

Borehole Conditions

The instruments are sited in a wooden frame building constructed as a WPA project (circa 1935) for the installation of Wood-Anderson torsion seismometers. The hillside building is partially underground and unheated. The concrete pier is located in the same room as the datalogger and supporting equipment. The seismometers are thermally insulated with 4" of polyurethane foam.

Station Pictures

View of Mt. Lassen<br>Courtesy of the NPS

View of Mt. Lassen
Courtesy of the NPS

Typical STS-1 installation

Typical STS-1 installation

Table of Seismic Instrumentation

SensorDataloggerSEED ChannelsLocation
BroadbandStreckeisen STS-1 VBB Feedback Horizontal SeismometerQ935BH?,HH?,LH?,UH?,VH?
Streckeisen STS-1 VBB Feedback Vertical SeismometerQ935BH?,HH?,LH?,UH?,VH?
AccelerometerKinemetrics FBA-23 Accel. (2 g max 1.25 v/g)Q935BL?,HL?,LL?

Waveforms and associated metadata are available at the Northern California Earthquake Data Center (NCEDC).

Waveform Data