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第 39 回 大気海洋物理系 B 棟コロキウム のおしらせ
日 時:1999年 9月 20日(月) 午後 4:30 〜 6:30
場 所:地球環境科学研究科 管理棟 2F 講堂
発表者:Zhanggui Wang (Researcher of JST.)
題 目:The Kuroshio Response to the low frequency wind stress
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The Kuroshio Response to the low frequency wind stress (Zhanggui Wang) 発表要旨 :
A one-way nested model, which includes a low resolution Pacific model and a fine resolution Kuroshio model, is developed and used to investigate an effect of the wind stress forcing on the Kuroshio transport. It is shown that the simulated seasonal variations of Kuroshio transport are in good agreement with the observations, a maximum in summer and a minimum in winter. The interannual fluctuation of the Kuroshio transport bears a close relation to the low frequency wind stress forcing. The amplitude and phase of the fluctuation depend on the structure and location of the wind stress forcing. We also examine the response of the Kuroshio transport to the real wind stress from the period 1972 to 1992. It is found that the Kuroshio transport across Asuka line has an oscillation of about 3-year period. It is mainly attributed to the interannual fluctuation of the surface wind stress curl located in the central Pacific Ocean. In addition, the model results reveal that the topographic effect is correlated with the model resolution.
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