南海北部海区温跃层分布特征及成因的初步分析

作者：陈希  沙文钰  李妍

单位：解放军理工大学气象学院海洋气象教研室 南京

关键词：南海 季节性温跃层 分布特征

分类号：P731

出版年·卷·期（页码）：2001·2001·第四期（9-17）

摘要：

利用二十一层海温再分析资料,详细分析了我国南海北部海区温跃层的强度、深度及厚度的季节变化特征。结果表明:在南海陆架浅水区域内,存在着随季节变化明显的辐射型温跃层;3～5月是温跃层的成长期:6～8月是该海域温跃层的强盛期;而9～11月温跃层开始减弱,到了冬季(12月到次年2月)温跃层变得最弱,趋于消亡。结合本海区温跃层的这种变化特征,分析了该海域净辐射通量的分布状况及随季节的变化特征,证明了净辐射通量是影响该海域温跃层季节性分布特征的最重要因素之一。

Use the twenty-one layers reanalysis data of sea temperature, we discusses the intension、deepness and thickness of thermocline character in the north of South China Sea, and the result indicated: in the shallow water area of South China Sea there existed the radiation type seasonal thermocline. From March to May was the shape period of the seasonal thermocline; from June to August was the strongest period of the seasonal thermocline; from Septemper to November was the waken period; and from the December to the February of the next year was the feebleness period. Base on the above analysis, we discuss the net monthly mean distribution of radiant flux in the north area of South China Sea and proved the net radiant flux was one of the most important factors which affect the seasonal thermocline.

参考文献：

[1] 王宗山等.渤、黄海强温跃层数值预报模式.海洋学报,1997,19(4) [2] 毛汉礼等.全国海洋综合调查报告,第三册,第四章:中国近海温、盐、密度的跃层现象科学出版社,1964 [3] 徐锡祯等.南海温跃层基本特征及一维预报模式.海洋与湖沼,1993,24(5) [4] 邓冰等.南海海温可预报性的诊断研究.海洋预报,1997,14,(3)

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