System for imparting compressional and shear waves into the eart

Details System for imparting compressional and shear waves into the eart System for imparting compressional and shear waves into the eart

1998-07-27

2000-05-23

Martin, David S.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181113, 181101, 181108, 181121, 181139, 181142, 181400, 181401, 367 14, 367 15, 367 75, 367 37, 367189, 367140, 116137R, 116142FP, 116DIG7, 116DIG18, 92 51, 92 52, 92 53, G01V 102

Patent

active

060655623

ABSTRACT:
A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a piston/cylinder relationship. Spaced apart horizontal top and bottom plates are secured to the hub. A mass is slidably supported between the plates. Pistons interconnect the hub and the mass. Hydraulic energy is used to reciprocate the mass vertically on the post and horizontally between the plates.

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