2010 Fiscal Year Final Research Report
Distribution and variation of source water components in intermediate layer in the mixed water region revealed by multiple tracer analysis
| Project/Area Number |
19684016
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Fisheries Research Agency |
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Principal Investigator |
SHIMIZU Yugo Fisheries Research Agency, 東北区水産研究所・混合域海洋環境部, 主任研究員 (10371791)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 混合水域 / 親潮 / 黒潮続流 / 複数トレーサー解析 / 水塊混合比 / 北太平洋中層水 / 中層フロート / 溶存酸素解析 |
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| Research Abstract |
In order to reveal the water mass distribution and circulation in the intermediate layer in the Oyashio and mixed water regions, a new method to estimate the mixing ratio among the source waters which form the observed water there was developed and applied to the temperature, salinity, and dissolved oxygen data observed there by our research vessel and profiling floats. Also, the volume transports of the source waters were examined using the observed ocean current data etc. As a result, it is quantitatively revealed that the water originated from the Okhotsk Sea flows into mixed water region with relatively more volume transport in the upper intermediate layer (26.7-27.0σ_θ) whereas the water originated from the subarctic gyre in the northwestern Pacific flows there in the lower layer (27.0-27.3σ_θ) with relatively more volume transport in contrast.
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Research Products
(14 results)
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[Journal Article] Application of an automatic approach for calibrating the NEMURO nutrient-phytoplanktonzooplankton food web model in the Oyashio region.2010
Author(s)
Ito S., Yoshie N., Okunishi T., Ono T., Okazaki Y., Kuwata A., Hashioka T., Rose K.A., Megrey B.A., Kishi M. J., Nakamachi M., Shimizu Y., Kakehi S., Saito H., Takahashi K., Tadokoro K., Kusaka A., Kasai H.
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Journal Title
Progressive Oceanography 87
Pages: 186-200
Peer Reviewed
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