FIELD: sea seismic prospecting, recording and processing of data obtained by signals from ordinary seismic sources. SUBSTANCE: system includes electrooptical receiving-interpreting aid signal processor. Mentioned aid emits light energy which is reflected from tested surface of sea with frequency bias caused by movement of sea surface stipulated by action of seismic compression waves coming to it. Reflected light signal is received separately from each section of surface of water by electrooptical aid, is processed in signal processor and is recorded in data register. Salient feature of such system lies in ability of mapping of underground strata without use of tow-cable trawls. EFFECT: improved reliability of system. 6 cl, 2 dwg
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