深海曳航音波探査ユニットの開発と深海構造調査 Development of Deep-towed Seismic Profiler Unit and its Application to Deep-sea Sub-bottom Geological Survey
Recently, high resolution seismic survey techniques have become necessary in many actual geological and geophysical investigations. Therefore , we are developing a new type of deep-towed system that can install many electronic components and different types of acoustic sensors at the same time. This paper reports our new digital seismic profiler unit that is currently developed and shows the result of our experiment off Omaezaki, Japan. We started to develop a deep-towed seismic profiling system in the second half of 1980's. Quick development of electronics and computers has lead us to down-sizing and smaller weight for a seismic unit. Major and minor improvements were made for the unit by conducting several offshore experiments in the last decade. We show here a seismic record taken in 1997. Significantly higher resolution seismic profile was obtained compared with the data by a surface-towed streamer cable system we got previously. The new profiler system has high enough capabilities suitable for real geological and geophysical surveys.
海洋調査技術 10(2), 29-40, 1998-09-01
Japan Society for Marine Surveys and Technology