Electroacoustic pulse-source for high resolution seismic...

Details Electroacoustic pulse-source for high resolution seismic... Electroacoustic pulse-source for high resolution seismic...

G - Physics

01

V

349/13

G01V 1/157 (2006.01)

Patent

CA 1250040

ABSTRACT A seismic source consists of an electroacoustic transducer having a metallic structure, shaped like an empty round paraboloid closed at the base by means of an elastic diaphragm and filled with a proper liquid. Around the focus of the paraboloid two main electrodes are set and an auxiliary electrode is put between the first ones. The main electrodes are connected to a set of capacitors supplied by a high-voltage power supply. One of the main electrodes and the auxiliary electrode are connected to a trigger pulse generator driven by a remote control via a synchronization pulse generator. The discharge between the main electrodes, primed by a preliminary spark, generates an acoustic pulse through the liquid medium of the transducer on the ground where the paraboloid is engaged. So the transducer generates seismic waves utilized for shallow prospecting both on land and underwater.

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