Title :
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
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;
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
DOI :
10.1109/UT.2007.370828
