Field Tests of 3-Component geophones, part II

Donald C. Lawton, Malcolm B. Bertram

Tests of Geosource, Litton, Oyo and Omniphones TM 3-component geophones showed similar performance characteristics for all geophones for test signals generated by a vector source at a horizontal distance of 10 m from the geophones. All geophones showed good separation between components, although the horizontal components of the Omniphones were found to be noisier than those of the other geophones.

Polarization directions measured by the geophones for a semicircle of shotpoints gave very similar results for all geophones and closely matched the expected azimuths.