Quantification of tidal mixing in the Indonesian Archipelago and its impact on the global climate
| Project/Area Number |
26257208
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HIBIYA TOSHIYUKI 東京大学, 大学院理学系研究科(理学部), 教授 (80192714)
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| Co-Investigator(Kenkyū-buntansha) |
木田 新一郎 九州大学, 応用力学研究所, 准教授 (50543229)
升本 順夫 東京大学, 大学院理学系研究科(理学部), 教授 (60222436)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥40,690,000 (Direct Cost: ¥31,300,000、Indirect Cost: ¥9,390,000)
Fiscal Year 2016: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2015: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2014: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
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| Keywords | 乱流混合 / 潮汐流 / インドネシア通過流 / 全球気候 / 投下式乱流計 / 投棄式乱流系 / 投棄式乱流計 |
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| Outline of Final Research Achievements |
The Indonesia Throughflow (ITF) is thought to induce changes of sea surface temperature (SST) and water-mass transformation in the Indonesian Sea and hence control the basin-scale climate change. In the present study, a high-resolution numerical experiment is carried out to quantify tidal mixing in the Indonesian Archipelago and its effect on the ITF. The validity of the calculated results is confirmed through the comparison with the results of previous microstructure observations. It is shown that significant changes of SST and water-mass transformation occur along the eastern route of the ITF caused by vertical mixing associated with breaking of internal tides near constricted channels as well as horizontal mixing associated with sub-mesoscale eddies with diameters of several kilometers.
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Report
(4 results)
Research Products
(119 results)
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[Presentation] Observations of sea surface heights using an airborne radar altimeter for great tsunamis early detection2017
Author(s)
Hirobe, T., Y. Niwa, T. Endo, I. E. Mulia, D. Inazu, T. Yoshida, H. Tatehata, A. Nadai, T. Waseda, and T. Hibiya
Organizer
Japan Geoscience Union-American Geophysical Union Joint Meeting 2017
Related Report
Int'l Joint Research
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[Presentation] 湾水振動のモード減衰率とQ値との関係2016
Author(s)
遠藤貴洋, 広部智之, 稲津大祐, 早稲田卓爾, 田島芳満, 日比谷紀之
Organizer
日本海洋学会2016年度秋季大会
Place of Presentation
鹿児島大学(鹿児島県・鹿児島市)
Year and Date
2016-09-12
Related Report
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[Presentation] 津波に対する湾水応答特性のマッピングに向けて2015
Author(s)
遠藤 貴洋, 稲津 大祐, 早稲田 卓爾, 日比谷 紀之
Organizer
北海道大学低温科学研究所共同利用研究集会「宗谷暖流を始めとした対馬暖流系の変動メカニズム」
Place of Presentation
北海道大学低温科学研究所 (北海道, 札幌市)
Year and Date
2015-07-10
Related Report
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