Apparatus for and methods of seismic prospecting

Details Apparatus for and methods of seismic prospecting Apparatus for and methods of seismic prospecting

1975-11-03

1977-02-01

Moskowitz, Nelson

Communications: electrical

Selective

Having electron beam device

340 155TG, 346 33C, G01V 126

Patent

active

040064450

ABSTRACT:
In seismic prospecting a local response is achieved by striking a hammer on the ground, and the recording apparatus is arranged to be triggered by the hammer to run from a short time before the impulse to a predetermined time after it. The impulse is recorded into one channel and the reflections into another, and the latter are slowed down by successive recordings to a speed where they can be mechanically plotted. The impulse signal in the other channel is used as a timing and control signal for the re-recording and playbacks.

REFERENCES:
patent: 2956261 (1960-10-01), Grossling
patent: 3293596 (1966-12-01), Paterson et al.
Gaugh, "A New Instrument for Seismic Exploration at Very Short Ranges," 4/52, pp. 311- 333, Geophysics, vol. 17, No. 2.

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