Acoustics – Wave coupling – Earth
Patent
1975-01-22
1978-02-07
Moskowitz, Nelson
Acoustics
Wave coupling
Earth
181116, G01V 102, G01V 110
Patent
active
040722082
ABSTRACT:
A method of seismic prospecting areas having a hard snow covered surface which comprises clearing the snow from a surface strip, laying a line of detonating cord on the surface, covering the cord with a layer of snow, compressing the snow layer to form a stemming layer around the cord, detonating the explosive and recording the reflected or refracted seismic waves.
The invention also includes an apparatus comprising a combination of snow ploughs, snow compressor and cord feed means for use in the method.
REFERENCES:
patent: 2377903 (1945-06-01), Rieber
patent: 2990904 (1961-07-01), Hawkins et al.
patent: 3632172 (1972-01-01), Robinson et al.
patent: 3712220 (1973-01-01), Marke et al.
patent: 3729060 (1973-04-01), Murray
Imperial Chemical Industries Limited
Moskowitz Nelson
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