Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46533 10.2205/2020ES000716 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Comparative influence analysis of various tropical cyclones in the South China Sea on the structure of the Vietnamese Current Comparative influence analysis of various tropical cyclones in the South China Sea on the structure of the Vietnamese Current Vlasova Galina Vlasova Galina gavlasova@mail.ru Nguyen Xuan Ba Nguyen Xuan Ba Nguyen Thuy Dung Thi Nguyen Thuy Dung Thi Il'ichev Pacific Oceanological Institute, Far Eastern Branch RAS ru Il'ichev Pacific Oceanological Institute, Far Eastern Branch RAS ru Institute of Oceanography, Vietnamese Academy of Science and Technology (IO VAST) ru Institute of Oceanography, Vietnamese Academy of Science and Technology (IO VAST) ru Institute of Oceanography, Vietnamese Academy of Science and Technology (IO VAST) ru Institute of Oceanography, Vietnamese Academy of Science and Technology (IO VAST) ru 20 5 29 10 2021 https://rjes.ru/en/nauka/article/46533/view

We analyze the water circulation in the zone of the Vietnamese Current in the South China Sea, which is the Western Boundary of the area. We use numerical modeling and calculate the full flow equations in the spring of 1999, what is a transition period from winter to summer. The main goal of the work is a comparative analysis of the influence of various tropical cyclones of the South China Sea on the vertical structure of the Vietnamese Current. We compare the trajectories of the tropical cyclones located in the northern and southern parts of the sea influenced differently at the circulation in the basin. We demonstrate that the tropical cyclones in the southern (northern) parts of the China Sea intensify significantly the Vietnamese Current. This causes the summer type of water transport from south to north named the summer regime of the Vietnamese Current while the other part of the area remains under the influence of the winter regime of water transport with the current propagating from north to south.

We analyze the water circulation in the zone of the Vietnamese Current in the South China Sea, which is the Western Boundary of the area. We use numerical modeling and calculate the full flow equations in the spring of 1999, what is a transition period from winter to summer. The main goal of the work is a comparative analysis of the influence of various tropical cyclones of the South China Sea on the vertical structure of the Vietnamese Current. We compare the trajectories of the tropical cyclones located in the northern and southern parts of the sea influenced differently at the circulation in the basin. We demonstrate that the tropical cyclones in the southern (northern) parts of the China Sea intensify significantly the Vietnamese Current. This causes the summer type of water transport from south to north named the summer regime of the Vietnamese Current while the other part of the area remains under the influence of the winter regime of water transport with the current propagating from north to south.

 South China Sea Vietnamese Current (Western boundary) atmospheric processes cyclone anticyclone hydrodynamic structures numerical modeling water circulation South China Sea Vietnamese Current (Western boundary) atmospheric processes cyclone anticyclone hydrodynamic structures numerical modeling water circulation This work was supported by the Russian-Vietnamese grant No. VANT19-020 in the framework of the Basic Research Program of the Far Eastern Branch of the Russian Academy of Sciences for 2018-2020.

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