Analysis on characteristics of wind-driven coastal upwelling off the southeastern China coast using coastal upwelling index
- 环境生态－已发表论文 
对1968年1月到2007年12月中国东南沿海(17°n~30°n,109°E~123°E)上升流指数月平均数据进行分析,结论如下:(1)风生沿岸上升流主要在4-8月间发生于海南岛东部、雷州半岛东部、汕头以北至浙江沿岸。(2)风生沿岸上升流的强度具有时空分布变化特征,其中海南岛东部沿岸上升流最强,浙江沿岸其次;整个中国东南沿岸强度较大的风生上升流发生在6-8月。(3)风生上升流的“成长期“长于“衰减期“;与海南岛东部相比,浙江沿岸风生上升流出现早,消失早。(4)海南岛东部、汕头、闽南及浙江沿岸风生上升流有逐年增大的趋势。(5)闽中以南风生上升流的显著周期为1年和半年,闽中以北为1年和4个月,过渡的闽中地区为1年、半年和4个月。In this paper,the characteristics of wind-driven coastal upwelling off the southeastern China coast are analyzed using CUI(Coastal Upwelling Index).The following results are obtained:(1) There exists wind-driven coastal upwelling in summer off the eastern Hainan Island and the Leizhou Peninsula,and from Shantou to Zhejiang.(2) The wind-driven coastal upwelling of the eastern Hainan Island is stronger than that of the others;and the upwelling is stronger during June to August.(3) Wind-driven coastal upwelling off Zhejiang appears earlier than that off the eastern Hainan Island.(4) Wind-driven coastal upwelling off the eastern Hainan Island,Shantou and Zhejiang has a trend of intensification.(5) The wind-driven coastal upwelling off the central and southern Fujian coast as well as Guangdong and eastern Hainan Island coast has two significant periods(one year and half a year);the upwelling has two periods(one year and four months) off the northern Fujian coast and Zhejiang coast;and the upwelling off central Fujian coast has three periods(one year,half a year and 4 months).