Seafloor Seismic Observations in the 80's -A revlew-

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  • 1980年代の海底地震観測
  • 1980ネンダイ ノ カイテイ ジシン カンソク

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Abstract

A review of seafloor observations of seismic waves is presented, highlighting progress in the 80's. Observations made by ocean bottom seismographs have proved superiority in the acquisition of better quality data than conventional surface hydrophone observations and in determining more accurate seismicity and seismic structure in ocean areas. The decade has seen developments of highly reliable instruments which can be deployed in tens of quantity. Efforts are continuing to broaden the observational window in the frequency range and dynamic range, which require to overcome noise problems linked to observational site and instrument coupling parameters. Long-term observation is also another important goal for the next generation of seafloor seismic instruments to construct a truly global seismic network.

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