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北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第58巻 第3号 >


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Title: 2006年5月末の北海道亀田半島沖で発生した急潮現象
Other Titles: The Kyucho occurred off Kameda Peninsula, Hokkaido, at the end of May, 2006
Authors: 小林, 直人1 Browse this author
磯田, 豊2 Browse this author →KAKEN DB
小林, 雅行3 Browse this author
佐藤, 千鶴4 Browse this author
木村, 修5 Browse this author
山口, 秀一6 Browse this author
高津, 哲也7 Browse this author →KAKEN DB
ロザ, アナ ルイザ8 Browse this author
Authors(alt): Kobayashi, Naoto1
Isoda, Yutaka2
Kobayashi, Masayuki3
Satoh, Chizuru4
Kimura, Osamu5
Yamaguchi, Hidekazu6
Takatsu, Tetsuya7
Rosa, Ana Luisa8
Keywords: Kyucho
Kameda peninsula
rainfall water
wind-induced internal Kelvin wave
Issue Date: 28-Feb-2009
Publisher: 北海道大学大学院水産科学研究院
Journal Title: 北海道大学水産科学研究彙報
Journal Title(alt): Bulletin of Fisheries Sciences, Hokkaido University
Volume: 58
Issue: 3
Start Page: 29
End Page: 41
Abstract: A large damage to fishing set-nets caused by the Kyucho occurred off Kameda peninsula on 30 May, 2006. Such Kyucho seldom occurs in this area and hence it is unusual phenomenon. Two current-meters setting off Usujiri located at Kameda peninsula and off Shiraoi faced the Hidaka Bay captured this sudden and swift current. The meteorological and oceanographical conditions in 2005 without the Kyucho and those in 2006 with the Kyucho were compared. The difference in both years was the oceanic stratification. That is, the surface halocline was thinly formed by a large quantity of rainfall water accompanied by the atmospheric disturbance on 28 May in 2006, before the Kyucho occurrence. In the case of such discontinuity subsurface thinner layer than usual, we will expect that the particle velocity of wind-induced internal Kelvin wave increases, but its phase propagation speed rather decreases. In fact, the observed surface current velocity (0.3-1.2 m/s) is almost as same as the estimated propagation speed (0.3-0.8 m/s).
Type: bulletin (article)
Appears in Collections:北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第58巻 第3号

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