Hydraulically-coupled, land seismic signal source

Details Hydraulically-coupled, land seismic signal source Hydraulically-coupled, land seismic signal source

1978-04-17

1980-01-08

Birmiel, Howard A.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181119, 181120, 181401, G01V 104

Patent

active

041824288

ABSTRACT:
The seismic source consists of a tank for containing a volume of water. The tank is held in firm contact with the ground by suitable weighting means. The tank wall that contacts the ground is thinner than the other walls. The volume of water in the tank is pressurized to one to three atmospheres. An imploder is mounted in the tank, submerged in the water. When the imploder is fired, reducing the tank pressure abruptly, a negative pressure pulse is generated in the water. The negative pressure pulse is transmitted from the water, through the thin ground-contacting wall, to the ground, producing an acoustic pulse whose first motion is one of rarefaction.

REFERENCES:
patent: 3310128 (1967-03-01), Chelminski
patent: 3642089 (1972-02-01), Parker
patent: 3670839 (1972-06-01), Savit
patent: 3701968 (1972-10-01), Broding
patent: 3712408 (1973-01-01), Muniz
patent: 3770080 (1973-11-01), Laurent et al.
patent: 3833087 (1974-09-01), Cholet
patent: 3840090 (1974-10-01), Silverman
patent: 4108271 (1978-08-01), Chelminski
patent: 4116301 (1978-09-01), Fair

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