초록

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Abstract ▼ AI-Helper

Unlike the conventional marine surface seismic survey which in most cases uses P-wave reflections, the active ocean-bottom seismic survey using an artificial source like air-gun and sensors located on the sea bottom provides us high quality mode-converted waves as well as wide-angle seismic data. Oc...

Unlike the conventional marine surface seismic survey which in most cases uses P-wave reflections, the active ocean-bottom seismic survey using an artificial source like air-gun and sensors located on the sea bottom provides us high quality mode-converted waves as well as wide-angle seismic data. Ocean-bottom wide-angle seismic data make it possible to resolve deep structure and velocity models in the offshore. Mode-converted waves further provides lithologic information such as S-wave velocity and Poisson's ratio which cannot be derived from P-wave data. In this study, we introduce the overall scope of ocean-bottom seismic technologies and discuss methods of survey and processing for diverse investigation targets. We also report current ocean-bottom seismic technologies and research trends of advanced countries and Korea.

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