Method and apparatus for creating seismic waves in the earth

Details Method and apparatus for creating seismic waves in the earth Method and apparatus for creating seismic waves in the earth

1975-01-06

1976-10-05

Birmiel, H.A.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181114, 340 17R, G01V 114

Patent

active

039839575

ABSTRACT:
A mass positioned above the earth and having downward extensions, which may include wheels, resting on the earth. One or more closed chambers having two parts vertically reciprocable with respect to each other, one part pressing on the earth, the other part fastened to the underside of the mass. Means to inject pressurized fluid into the chamber to expand the chamber and to lift the mass above the earth, and means to modulate the fluid pressure in the chamber to generate seismic waves in the earth, and means alternately to apply a subatmospheric pressure to the chamber, to collapse the chamber and lift said one part above the earth.

REFERENCES:
patent: 2283588 (1942-05-01), Strom
patent: 2312850 (1943-03-01), Scharoun
patent: 3363720 (1968-01-01), Mifsud et al.
patent: 3658148 (1970-04-01), Clynch
patent: 3690402 (1972-09-01), Stafford
patent: 3866709 (1975-02-01), Mifsud
patent: 3905446 (1975-09-01), Ross

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