A new approach to geophysical real-time measurements on a deep-sea floor using decommissioned submarine cables

被引：1
|
作者：
Junzo Kasahara
Toshinori Sato
Hiroyasu Momma
Yuichi Shirasaki
机构：
[1] University of Tokyo,Earthquake Research Institute
[2] JAMSTEC (Japan Marine Science and Technology Center),undefined
[3] KDD R & D Laboratories,undefined
来源：
Earth, Planets and Space | 1998年 / 50卷
关键词：
Hydrophone; Ocean Bottom Seismometer; Submarine Cable; Broadband Seismometer; Hydrophone Array;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In order to better understand earthquake generation, tectonics at plate boundaries, and better image the Earth’s deep structures, real-time geophysical measurements in the ocean are required. We therefore attempted to use decommissioned submarine cables, TPC-1 and TPC-2. An OBS was successfully linked to the TPC-1 on the landward slope of the Izu-Bonin Trench in 1997. The OBS detected co-seismic and gradual changes during a Mw 6.1 earthquake just below the station at 80 km depth on November 11, 1997. A pressure sensor co-registered a change equivalent to 50 cm sea-level change. This suggests a high possibility detecting silent earthquakes or earthquake precursors if they exist.
引用
收藏
页码：913 / 925
页数：12
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