2015 Fiscal Year Final Research Report
A study on mean features and variability of meandering and ring formations in the Kuroshio Extension and Gulf Stream regions
Project/Area Number |
25800258
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Meteorology/Physical oceanography/Hydrology
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Research Institution | Hokkaido University |
Principal Investigator |
Sasaki Yoshinori 北海道大学, 理学(系)研究科(研究院), 講師 (50604815)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Keywords | 海洋物理・陸水学 / 気候変動 / 海洋ジェット / 黒潮続流 / メキシコ湾流 |
Outline of Final Research Achievements |
A new method that consists of the detection of the jet path changes and the tracking of a mesoscale eddy is proposed to objectively capture eddy shedding from an oceanic jet based on sea surface height data. This method is applied to the Kuroshio Extension and Gulf Stream jets. Based on these results, it is revealed that the pinched-off mesoscale eddies play an important role in across-jet transports of heat and nutrients. In addition, the fluctuations of the eddy formation are negatively correlated with the strength of the jets, suggesting deceleration of the jets by eddy formation.
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Free Research Field |
数物系科学
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