据日本《每日新闻》1977年3月31日讯,在今年3月派出考察团到硫黄岛南方海区进行有关海底火山活动的调查过程中,曾使用了由东京大学教授浅田敏研制的海底地震仪。他们使用了四部这样的仪器,在日吉近海沉下三部,在福德冈沉下一部。在设置三至六天以后,用缆绳将其从水深500～2,200米的海底回收,结果四部仪器工作 According to Japan’s “Daily News” March 31, 1977 hearing, in March this year to send a delegation to the southern part of the island of Sulfur Huang sea volcanic activity survey, the use of the University of Tokyo Professor Tian Tianmin developed earthquake instrument. They used four such instruments, three below the coast of Kyrgyzstan, and one below the Fogang. After three to six days of set-up, it was retrieved from the seafloor with a depth of 500-2,200 meters by cable, resulting in four instruments working