A seismic recording drum is on display and in constant operation in the department.
Coaxial cables connect the recorders to a seismic pit outside the building.
Inside the pit, an intermediate period vertical seismometer is mounted on a 24''-diameter cement column that extends to bedrock. A continuous file of seismograms is maintained. These records are used in GEO 237, Physics of the Earth, as well as in introductory courses. The station attracts interest from the local news media, the general public and seismologists interested in earthquakes in this region. We have digitized the seismic signal.