Seismic parameter measurement method and apparatus

Details Seismic parameter measurement method and apparatus Seismic parameter measurement method and apparatus

1981-07-20

1984-06-19

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Receiver circuitry

Responsive to intruder energy

340566, 340565, 367 93, G01V 116

Patent

active

044556314

ABSTRACT:
The apparatus comprises a geophone connected to a circuitry case containing battery, a voltage regulator, a solid state preamplifier and amplifier tuned to respond to seismic signals between 2 and 25 Hz. The amplified seismic signals are rectified and applied to a microammeter connected to efficiently respond to pulsations at the step frequency of walking or crawling personnel. The apparatus can be used to measure seismic noise and to determine soil conditions prior to the emplacement of an intrusion detection system.

REFERENCES:
patent: 3691549 (1972-09-01), Wilson
patent: 3958213 (1976-05-01), Scott et al.
patent: 3969711 (1976-07-01), Ahntholz

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