| NUMERICAL SIMULATION OF 1998 RED TIDE OF THE BOHAI SEA |
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| 作者姓名： | Yongsheng WU Zhao-Yin WANG |
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| 作者单位： | Hydraulic Engineering，Tsinghua University Beijing，100084，China，Hydraulic Engineering，Tsinghua University Beijing，100084，China |
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| 基金项目： | The study is supported by the National Natural Science Foundation of China and the Hong Kong Research Grants (No. 59890200 & No. 50109006). . |
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| 摘 要： | 1 INTRODUCTION The Bohai Sea, located in East China, consists of five parts: Bohai Bay, Liaodong Bay, Laizhou Bay, Central Bohai and the Bohai Strait, as shown in Fig.1. The average water depth of the semi-enclosed sea is only 17 m. The maximum water depth is 70 m, measured in the Bohai Strait. Surrounding the Bohai Sea are 17 industrial cities, including Beiijing, Tangshan, Tianjin, Dalian, Huanghua and Dongying. More than 50 rivers, including the Haihe, Liaohe, Yellow, and …
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NUMERICAL SIMULATION OF 1998 RED TIDE OF THE BOHAI SEA |
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| Yongsheng WU,Zhao-Yin WANG.NUMERICAL SIMULATION OF 1998 RED TIDE OF THE BOHAI SEA[J].International Journal of Sediment Research,2002,17(3). |
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| Authors: | Yongsheng WU Zhao-Yin WANG |
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| Institution: | Yongsheng WU and Zhao-Yin WANG |
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| Abstract: | Algal bloom, known as red tide, has occurred frequently in the Bohai Sea in recent decades causing great economic losses to fisheries as well as having significant adverse impact on the environment. A 3-D Eco-Hydraulic model is developed to simulate the explosive propagation of diatom and dinoflagellate as a function of the concentration of various nutrients, river inflow, tide, temperature, wind, sunshine and rainfall. The model is intended to answer the questions of how the 1998 Bohai Sea red tide occurred, and to investigate how environmental factors, such as temperature, wind, rainfall, solar radiance, sea currents and nutrients, affect the algal bloom process. The parameters employed in the model are calibrated with the data collected in the periods 1982-1983 and 1992-1993. Results from the model indicate that eutrophication of the seawater is the basic condition for algal bloom, and that the 1998 red tide was triggered by the abnormal warm weather in August and September. |
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| Keywords: | Algal bloom Eco-hydrodynamic model Bohai Sea Red tide Eutrophication |
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