Near-surface seismic investigation source apparatus

Details Near-surface seismic investigation source apparatus Near-surface seismic investigation source apparatus

1994-04-22

1995-05-16

Pihulic, Daniel T.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

G01V 102

Patent

active

054162823

ABSTRACT:
The apparatus consists of a cylindrical combustion chamber supported on the top end of a cylindrical shock tube. The lower end of the shock tube is held a distance from the ground on which the apparatus is used inside a conical enclosure. The conical enclosure is attached to a circular base with a circular hole at its center. The interior of the conical enclosure is covered by a layer of acoustical insulation. The diameter of the shock tube is less than the diameter of the combustion chamber. The cone angle of the conical enclosure is about 50.degree..

REFERENCES:
patent: 4043420 (1977-08-01), Zens et al.
patent: 4189026 (1980-02-01), Elliot et al.

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