JMA´s new Ocean Bottom Seismographs (OBS) using marine cable installed at the Sea of Enshu to the Sea of Kumano

Author

Saito, Shouji ; Moriwaki, Ken ; Yamada, Yasuyuki

Author_Institution

Japan Meteorol. Agency, Tokyo

fYear

2007

fDate

17-20 April 2007

Firstpage

639

Lastpage

646

Abstract

JMA started a project in 2004 to install new ocean bottom seismographs (OBS) using marine cable at around assumed focal regions of anticipated Tokai and Tonankai earthquakes. JMA installed ocean bottom seismographs (OBS) in 1978 at assumed focal region of Tokai earthquake at the sea of Enshu, and has been keeping seismic observation using them; the started project is to install new OBS on west of the existing OBS. The aim of new OBS is improvement of detection ability of small earthquakes, and also prompt detection of large earthquake and precise determination of its magnitude for early earthquake warning.

Keywords

earthquakes; oceanographic equipment; oceanographic regions; seismometers; submarine cables; 2004; JMA; OBS; Ocean Bottom Seismographs; Sea of Enshu; Sea of Kumano; Tokai Earthquakes; Tonankai Earthquakes; assumed focal regions; early earthquake warning; earthquakes detection ability; focal region; marine cable; seismic observation; Control systems; Earthquakes; Meteorology; Motion estimation; Oceans; Optical devices; Optical sensors; Pressure gauges; Repeaters; Underwater cables;

fLanguage

English

Publisher

ieee

Conference_Titel

Underwater Technology and Workshop on Scientific Use of Submarine Cables and Related Technologies, 2007. Symposium on

Conference_Location

Tokyo

Print_ISBN

1-4244-1207-2

Electronic_ISBN

1-4244-1208-0

Type

conf

DOI

10.1109/UT.2007.370828

Filename

4231158