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タイトル: 自己浮上式海底地震計の位置精度
その他のタイトル: Position Accuracy of Pop-up Ocean-Bottom Seismometer
著者: 南雲, 昭三郎
笠原, 順三
是沢, 定之
著者(別言語): Nagumo, Shozaburo
Kasahara, Junzo
Koresawa, Sadayuki
発行日: 1982年7月16日
出版者: 東京大学地震研究所
掲載誌情報: 東京大学地震研究所彙報. 第57冊第1号, 1982.7.16, pp. 119-123
抄録: The accuracy of the Pop-up Ocean-Bottom Seismometer (ERI-P79) was tested on the cruise of the R/V Hakuho-Maru (University of Tokyo, Ocean Research Institute) in Feburary-March of 1980 in the Japan Trench and the Bonin Trench regions. The location of the OBS (Ocean-Bottom Seismometer) on the sea-floor is determined to be halfway between the point where it was dropped from the ship and the point where it surfaced. An accuracy of ±0.1 nautical mile, referred to the satellite position, was achieved by careful operations during both the deployment and the recovery. Recommended for these operations are : (1) for deployment, one should drop the OBS at the satellite update time, and also measure and correct the Loran position to the satellite position and (2) for recovery, one should wait at the drop position for the OBS to surface and then pick it up as soon as possible.
URI: http://hdl.handle.net/2261/12838
ISSN: 00408972


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