Seismic recording

Details Seismic recording Seismic recording

G - Physics

01

V

349/20

G01V 1/26 (2006.01)

Patent

CA 1208756

-12- Abstract Seismic Recording A method and apparatus for indicating the time- break on a seismic record wherein the time-break is marked in response to the rupture of an electric circuit by the explosive charge used to generate the seismic waves. The preferred rupturable electric circuit is connected to the same energy source as the electric detonator used to initiate the explosive charge and the preferred electric detonator is one connected to a high frequency A.C. firing energy source through a transformer, the rupturable electric circuit being the primary or secondary circuit of the transformer. The method is more accurate than the present method of marking the time-break at the initial application of current to the detonator.

404217

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