| Chemical hydrography of coastal upwelling in the East China Sea |
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| 作者姓名： | 王保栋 王修林 |
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| 作者单位： | Ocean University of China Qingdao 266003 China The First Institute of Oceanography SOA Qingdao 266061 China，Ocean University of China Qingdao 266003 China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | Based on the field data obtained during cruises on the shelf of the East China Sea from 1997 to 1999, seasonal variations of coastal upwelling on the inner shelf are discussed by using cross-shelf transect profiles and horizontal distributions of chemical and hydrographic variables. Results show that the coastal upwelling was year-round, but the areas and intensities of the upwelling were quite different in season. The coastal upwelling occurred in all of the coastal areas of the region in spring and summer, but in autumn only in the area off Zhejiang Province, and in winter in the area off Fujian Prov- ince. It was the strongest in summer and the weakest in winter. Geographically, it was the strongest in the area off Zhejiang Province and the weakest in the southmost or northmost parts of the East China Sea. The estimated nutrient fluxes upward into euphotic zone through coastal upwelling were quite large, es- pecially for phosphate, which contributed significantly to primary production and improved the nutrient structure of the coastal ecosystem in the East China Sea.
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| 关 键 词： | 水文地理学 海洋 上升流 东海 海洋动力学 |
| 收稿时间： | 2005-11-26 |
| 修稿时间： | 2006-11-20 |
Chemical hydrography of coastal upwelling in the East China Sea |
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| Wang?Baodong,Wang?Xiulin.Chemical hydrography of coastal upwelling in the East China Sea[J].Chinese Journal of Oceanology and Limnology,2007,25(1):16-26. |
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| Authors: | Wang Baodong Wang Xiulin |
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| Institution: | (1) Ocean University of China, Qingdao, 266003, China;(2) The First Institute of Oceanography, SOA, Qingdao, 266061, China |
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| Abstract: | Based on the field data obtained during cruises on the shelf of the East China Sea from 1997 to 1999, seasonal variations of coastal upwelling on the inner shelf are discussed by using cross-shelf transect profiles and horizontal distributions of chemical and hydrographic variables. Results show that the coastal upwelling was year-round, but the areas and intensities of the upwelling were quite different in season. The coastal upwelling occurred in all of the coastal areas of the region in spring and summer, but in autumn only in the area off Zhejiang Province, and in winter in the area off Fujian Prov- ince. It was the strongest in summer and the weakest in winter. Geographically, it was the strongest in the area off Zhejiang Province and the weakest in the southmost or northmost parts of the East China Sea. The estimated nutrient fluxes upward into euphotic zone through coastal upwelling were quite large, es- pecially for phosphate, which contributed significantly to primary production and improved the nutrient structure of the coastal ecosystem in the East China Sea. |
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| Keywords: | coastal upwelling vertical structure chemical hydrography nutrient flux the East China Sea |
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