Mechanism of the seasonal transport variation through the Tokara Strait |
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| Authors: | M Kubota H Yokota T Okamoto |
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| Institution: | (1) School of Marine Science and Technology, Tokai University, 424 Shimizu, Shizuoka, Japan;(2) Present address: Center for Climate System Research, University of Tokyo, 153 Tokyo, Japan;(3) Present address: Fujitsu Limited, Numazu, 410-03 Shizuoka, Japan |
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| Abstract: | To investigate an mechanism of the seasonal variation of transport through the Tokara Strait, two numerical experiments with real geometry and wind forcing were carried out. The models are linear barotropic models which are a North Pacific Ocean model and a limited-area model with a fine grid. The seasonal variation of volume transport with a maximum in the summer and a minimum in the autumn could be well reproduced by both models. The results demonstrate the wind stress component normal to a gradient vector of bottom topography is crucial for determining the seasonal variation. The similar seasonal variation widely covers the East China Sea and has a large amplitude near the Tokara Strait. Finally, it can be concluded that winds north of 35°N have little influence on the seasonal response of our model at the Tokara Strait. |
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