Summer Wind Effects on Coastal Upwelling in the Southwestern Yellow Sea

被引:7
|
作者
Wang, Bin [1 ,2 ]
Wu, Lei [1 ,2 ]
Zhao, Ning [3 ]
Liu, Tianran [4 ]
Hirose, Naoki [4 ]
机构
[1] Hohai Univ, Key Lab Marine Hazards Forecasting, Minist Nat Resources, Nanjing 210098, Peoples R China
[2] Hohai Univ, Coll Oceanog, Nanjing 210098, Peoples R China
[3] Japan Agcy Marine Earth Sci & Technol, Res Inst Global Change, Yokosuka, Kanagawa 2370061, Japan
[4] Kyushu Univ, Res Inst Appl Mech, Kasuga 8168580, Japan
基金
中国国家自然科学基金;
关键词
coastal upwelling; southwestern Yellow Sea; Subei coastal current; southwesterly wind; shear wind; CHANGJIANG YANGTZE-RIVER; SURFACE COLD PATCHES; CIRCULATION; PROLIFERA;
D O I
10.3390/jmse9091021
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
The features of coastal upwelling in the southwestern Yellow Sea were investigated based on oceanology data from a research cruise and a regional circulation model. The observation data suggest that a relatively colder and saltier water core exists from the deeper layer to the surface, off the Subei Bank. The concentrations of nutrients also suggest that coastal upwelling is beneficial for nutrient enrichment in the upper layer. The numerical simulations are in good agreement with oceanology observations. Furthermore, sensitivity experiments indicate that, in addition to the tidal-induced upwelling and tidal mixing proposed in previous studies, the summer monsoon is also critical to vertical circulation in the southwestern Yellow Sea. The southwesterly wind stress and positive wind stress curl make considerable contributions to upwelling off the Subei coast compared with tidal motions. Moreover, this study also proposes that changes in the summer monsoon and its curl may have been helpful to the formation of upwelling during the past decade, which may have provided a favorable marine environment for the frequent occurrence of green tides. This study provides a theoretical basis for the mechanisms of coastal upwelling and the nitrogen cycle in the Yellow Sea.
引用
收藏
页数:16
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