Developing a revolutionary method for exploration of seafloor hydrothermal deposits
Project/Area Number |
25630417
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Earth system and resources engineering
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Research Institution | The University of Tokyo |
Principal Investigator |
Nakamura Kentaro 東京大学, 工学(系)研究科(研究院), 准教授 (40512083)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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Keywords | 海底熱水鉱床 / 船上音響探査 / 周波数 / 観測条件 / 中部沖縄トラフ / 伊平屋北海域 / 新規サイト発見 |
Outline of Final Research Achievements |
In order to make a dramatic improvement in exploration efficiency of seafloor hydrothermal deposits, I tried to develop a new exploration method based on water column observation using multibeam echo souder (MBES) systems. The three years of research produced the following results; (1) elucidation of the cause of the detection of hydrothermal plumes by MBES, (2) determination of optimal conditions for the MBES survey, and (3) performance of a wide-area acoustic water column survey in mid- and southern Okinawa Trough, which provided evidence of effectiveness of this exploration method as well as the first wide-area map for seafloor hydrothermal vent sites in mid-Okinawa Trough.
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Report
(4 results)
Research Products
(5 results)
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[Journal Article] Water column imaging with multibeam echo-sounding in the mid-Okinawa Trough: Implications for distribution of deep-sea hydrothermal vent sites and the cause of acoustic water column anomaly2015
Author(s)
Nakamura, K., Kawagucci, S., Kitada, K., Kumagai, H., Takai, K., and Okino, K.
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Journal Title
GEOCHEMICAL JOURNAL
Volume: 49
Issue: 6
Pages: 579-596
DOI
NAID
ISSN
0016-7002, 1880-5973
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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