1987 Fiscal Year Final Research Report Summary
Short period flucturations of oceanographic and fishing conditions in the coastal boundary region of the Kuroshio and their prediction.
| Project/Area Number |
60460209
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
General fisheries
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| Research Institution | The University of Tokyo |
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Principal Investigator |
SUGIMOTO Takashige Associate Professor, 海洋研究所, 助教授 (40004428)
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| Co-Investigator(Kenkyū-buntansha) |
HIRANO Toshiyuki 東京大学, 海洋学部, 教授 (30013593)
KAWASAKI Yasuhiro Research Associate, Univ. of Tokyo, 海洋研究所, 助手 (90175290)
NAKATA Hideaki Research Associate, Univ. of Tokyo, 海洋研究所, 助手 (60114584)
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| Project Period (FY) |
1985 – 1987
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| Keywords | fisheries prediction / oceanic variation / Kuroshio front wave / Kumano-nada / 黒潮流路変動 / 前線波動 / 暖水舌 |
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| Research Abstract |
Detailed characteristics of short- term fluctuations of the Kuroshio and its Coastal boundary region have been made clear. For this purpose, direct current measurement by use of moored current meters, ship drift of car ferries were applied, and fish catch data at coastal set-net were analyzed. Following results are obtained. The temperature and the current data in the coastal areas of the Kuroshio showed a clear 20 days periodicity almost the same as a period of the Kuroshio's small meander, whose wave length was about 200 km. Catchs yellow-tail in the Kumano-nada and sardine's larvae in the Eushu-nada fluctuated, obviously related to those oceanographic conditions.
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