Studies on mixing and exchange between the Okhotsk Sea and the Pacific and impact on deep structure
| Project/Area Number |
25257206
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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 |
Yasuda Ichiro 東京大学, 大気海洋研究所, 教授 (80270792)
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| Co-Investigator(Kenkyū-buntansha) |
Nishioka Jun 北海道大学, 低温科学研究所, 准教授 (90371533)
Fujio Shinzo 東京大学, 大気海洋研究所, 准教授 (00242173)
Yanagimoto Daigo 東京大学, 大気海洋研究所, 助教 (40260517)
Nagasawa Maki 東京大学, 大気海洋研究所, 技術専門員 (60447448)
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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 |
¥48,100,000 (Direct Cost: ¥37,000,000、Indirect Cost: ¥11,100,000)
Fiscal Year 2015: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥21,190,000 (Direct Cost: ¥16,300,000、Indirect Cost: ¥4,890,000)
Fiscal Year 2013: ¥21,580,000 (Direct Cost: ¥16,600,000、Indirect Cost: ¥4,980,000)
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| Keywords | 日露共同観測 / ブッソル海峡 / オホーツク海 / 乱流 / 鉛直混合 / 千島海峡部 / ロシア海域 / 深層循環 |
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| Outline of Final Research Achievements |
By performing the Russian vessel Multanovsky Expedition in the Russian economic zone in June 2014, we succeeded in time-series observations of long-range current moorings and a glider with a turbulence profiler in and around the Kuril Straits and physical-chemical integrated observations on the Pacific side. Observed enhanced turbulence in the Bussol’ Strait leads to the discovery that thickness and iron/nutrient changes of outflowing Okhotsk Sea water through the strait to influence largely on the water-mass structures and ecosystem in the North Pacific. The enhanced turbulence is found to be generated by 1) the superposition of tidal and mean currents in the deep Bussol’ Strait and by 2) the enhanced down-slope currents accompanied by topographically-trapped waves in the shallow Urup Strait.
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Report
(4 results)
Research Products
(93 results)
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[Journal Article] 水中グライダーによる沿岸海洋観測の可能性2016
Author(s)
伊藤進一,有馬正和,市川雅明,青木茂,奥西武,筧茂穂,長谷川大介,和川拓,安田一郎,田中雄大,黒田寛,清水勇吾
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Journal Title
沿岸海洋研究
Volume: 53(2)
Pages: 125-133
NAID
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Recent sediment dynamics in hadal trenches: Evidence for the influence of higher-frequency (tidal, near-inertial) fluid dynamics.2014
Author(s)
Turnewitsch, R., Falahat S., Stehlikova, J., Oguri K., Glud, R. N, Middelboe, M., Kitazato H., Wenzhofer F., Ando K., Fujio S., and Yanagimoto D.
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Journal Title
Deep-Sea Research I,
Volume: 90
Related Report
Peer Reviewed
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[Journal Article] 10.1002/grl.50613.2013
Author(s)
Kaneko, H., I. Yasuda, K. Komatsu, and S. Itoh
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Journal Title
Geophysical Research Letters
Volume: 40
Issue: 12
Pages: 3123-3127
DOI
Related Report
Peer Reviewed
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