Experimental evidence to support the double head wave method of generating a rare faction first motion
Description:
An earlier report suggested a double headwave method of generating a rarefaction first motion. In this method a geologic situation is selected so that energy that has been critically refracted once above the shot and once below shot arrives first. Since the theory of headwaves gives in the usual stationary phase approximation a ninety degree phase shift for each critical refraction, energy that has been critically refracted twice produces a 180 degree phase shift. Oil well data was presented to…
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Date:
November 25, 1959
Creator:
Werth, G. C.
Item Type:
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Partner:
UNT Libraries Government Documents Department