日本地质调查所海洋地质部自1974年以来,为了绘制日本周围海域的海底地质图即开始实施一系列调查工作。此项调查主要由两个计划构成,其中一个是日本周围包括深海区在内的区域调查计划,此计划实施的结果预定出版100万分之一区域海底地质图和重力磁力异常图.另外一个是以大陆架及上部陆坡区的详查为目的的调查计划,这一计划预定出版20万分之一的海底地质图、表层沉积图和重力、磁力异常图。 Since 1974, the Japan Geological Survey Marine Geology Department has started a series of investigations to map the seabed geological maps of the sea areas around Japan. The survey consists mainly of two plans, one of which is a regional survey plan around Japan, including the deep-sea zone, where the results of the plan are scheduled to be published in regional seafloor geological maps and gravity magnetic anomaly maps of one millionth. A survey plan aimed at detailed surveys of the continental shelf and the upper slope area is scheduled to publish a 200,000th seabed geological map, surface sediment map and gravity and magnetic anomaly maps.