Bore hole seismometer component, 1980

borehole seismometer components, consisting of miniature5cm horizontal component seismometer, with Teledyne Helicorder amplifer and drum recorder, 1980

This is the vertical component of a three component set of seismometers, designed to fit down boreholes. The components weigh only a few grammes each and their movements are detected by coil and magnet jackets and cabled to the surface. They can be tuned to various frequencies according to their intended purpose.

Details

Category:
Geophysics
Object Number:
1980-1069
Materials:
metal (unknown), wood (unidentified) and plastic (unidentified)
Measurements:
overall: x x , , 21.67kg
type:
seismometers
credit:
Usher, M.J.