| 摘要 |
PURPOSE: A multi channel seismic survey apparatus for obtaining seismic data is provided to improve the reliability of a survey result by obtaining seismic data which is applicable for the waveform inversion in the Laplace domain. CONSTITUTION: An air compressor(100) compresses air. The air emitter(200) generates an elastic wave by emitting the compressed air. In a streamer, channels with a plurality of hydrophones are arranged with a pre-set gap. The hydrophones receive the elastic wave which is reflected from the interface of undersea stratum. A signal recording unit(400) records the elastic wave in a memory. A Laplace conversion unit(600) converts elastic wave data in a time domain to elastic wave data in a Laplace domain. A waveform inversion unit(700) performs a waveform inversion process with respect to the elastic wave data in the Laplace domain.
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