Abstract
From the field observations and the buoy robot data, the warm ocean water is known to intrude into Kagoshima Bay intermittently in winter. We first visualize these phenomena using some satellite thermal infrared images. Then the numerical analysis is performed employing a multi-level finite difference method (FDM). It is found from the numerical analysis that the intrusion occurs when the warm water comes into touch with the bay water at the mouth of the bay. The calculated warm water distribution in the bay is similar to the satellite images and the velocity of the intrusion is the same order with the ones estimated by the buoy robot data and the satellite images. The intrusion occurs even without the tidal effect, the role of the tide is only to rectify some warm water distribution in the bay.
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Jun-ichi Kohno: He received his B.Sc. (1976) and his Ph.D. (1984) in Physics from Kyushu University. From 1993, he serves as a researcher for Kagoshima Environmental Research and Service. His research interests are environmental fluid dynamics and satellite remote sensing.
Kazunori Hosotani: He received his B.Eng.(1996) and M.Eng.(1999) in Mechanical engineering from Tottori University. After B.Eng., he worked in the CKD Co., Ltd. Since 1999, he is currently an engineer at the Kagoshima Environmental Research and Service. His research interest is environmental fluid dynamics.
Yuhsaku Ono: He received his B.Fish. (2003) from Kagoshima University. He is a student of Master course in the Faculty of Fisheries of Kagoshima University. His research interest is satellite remote sensing on the coastal environment.
Hiroyuki Kikukawa: He received his B.Sc. (1967) and his Ph.D. (1973) in Physics from University of Tokyo. After Ph.D., he works at Kagoshima University (1974-) in the field of coastal oceanography. He is a professor of Kagoshima University. His research interests are satellite remote sensing and numerical study on the coastal environment.
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Kohno, J., Hosotani, K., Ono, Y. et al. Warm ocean water intrusion into Kagoshima Bay. J Vis 7, 331–340 (2004). https://doi.org/10.1007/BF03181537
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DOI: https://doi.org/10.1007/BF03181537