2009 Fiscal Year Final Research Report
Observational study of deep circulation in the Northwest Pacific
| Project/Area Number |
18340136
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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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 |
KAWABE Masaki The University of Tokyo, 海洋研究所, 教授 (40143549)
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| Co-Investigator(Kenkyū-buntansha) |
YANAGIMOTO Daigo 東京大学, 海洋研究所, 助教 (40260517)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 海洋物理 / 海洋観測 / 深層循環 / 流量変動 / 水塊分析 |
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| Research Abstract |
In order to clarify the deep ocean circulation which forms the current state of ocean and climate by transporting deep water, we conducted oceanographic observations in the North Pacific where deep water upwells and returns to south. Analyzing the oceanographic data, we clarified the variability of location, velocity, and volume transport of deep current in the lower deep layer (deeper than 3500m) which flows in the Northwest Pacific Basin proceeding northward in the Pacific Ocean, and also clarified the distribution and volume transport of deep current in the upper deep layer (2000-3500m depth) which overturns and returns to the Antarctic Ocean. Moreover, we proposed the overall picture of the Pacific Ocean circulation by integrating the results of the study.
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