据1979年5月15日日本气象厅观测部地震课报道:日本气象研究所地震研究部在东京大学、海上保安厅、日本电信电话公司等单位的协助下,从1974年开始动工,经过5年艰苦努力,正式建成海底地震监视系统,并于1979年4月1日开始运用。这项“海底地震观测系统的研究”计划,作为日本第3次地震计划的一环, According to the May 15, 1979 Japan Meteorological Agency observatory earthquake class report: Japan Meteorological Institute of Seismology Research Department with the help of Tokyo University, Coast Guard, Nippon Telegraph and Telephone Corporation and other units, starting from 1974, after 5 years Worked hard to formally build a submarine earthquake monitoring system, and in April 1, 1979 began to use. As part of Japan’s third earthquake plan, the “Study of Underwater Seismic Observation System”