SEGJ Technical Conference

A small-scale three dimensional seismic reflection survey at the region near the mouth of Fuji River, Shizuoka Pref.

Abstract It is very important to know the subsurface structure and depositional environment from the coastal to the shallow sea region, when studying a groundwater flow. However, when we acquire geophysical survey data, since the data acquisition methods of both land and marine cannot successfully be applied for the data acquisition at the domain from the coastal to the shallow sea region, such regions are often left as blank of geophysical surveys. Therefore, we are investigating the geophysical survey methods appropriate for the survey beneath the coastal to the shallow sea region. We are also developing the evaluation method for such region. Therefore we carried out a seismic reflection survey for the purpose of imaging the subsurface of coastal to the shallow sea region of the mouth of the Fuji River, Shizuoka, and checked applicability of the technique. We carried out three-dimensional seismic reflection survey using an ocean bottom cable system. As a result, we could image three dimensional subsurface structure of the target area.