FIELD: seismic prospecting of oil-gas fields in water area, in particular, on a shelf. SUBSTANCE: the seismoacoustic Earth's background is recorded at least by two three-component acoustic installations by all the three components at a time; acoustic vibrations are generated without discontinuing the recording; recording is continued after discontinuing of generation of vibrations. Appearance of infrared resonance frequencies in the spectral characteristics of the information signal testifies to the availability of the field. EFFECT: reduced cost of search and enhanced accuracy. 7 cl, 2 dwg
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