鹿児島湾への外洋水の流入に及ぼす大隅分枝流の影響について

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タイトル別名
  • INFLUENCE OF THE OSUMI BRANCH CURRENT ON OCEANIC WATER INFLOW INTO KAGOSHIMA BAY

説明

Properties of the current velocity index of the Osumi Branch Current (OBC) in the Osumi Strait south of Kyushu were re-examined using sea-level data during 1971-2003. The high correlation with the current velocity measured in the Osumi Strait confirmed that the sea-level difference between Nishino-omote and Odomari is a good index to monitor the current velocity of the OBC. Using daily values of the index and water temperature measured in Kagoshima Bay in 1999, it is found that the current velocity fluctuations of the OBC with periods less than about 8 days significantly contribute to oceanic water inflow into Kagoshima Bay. Moreover, the oceanic water is shown to reach to the central part of Kagoshima Bay about 1.3 day after it enters into the bay along the Osumi Peninsula.

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