印度洋塞舌尔穹隆区海表面温度的季节变化  

Seasonal Variability of the SST in Seychelles Dome Region of Indian Ocean

作　　者：楚合涛[1] 胡瑞金[1] 范植松[1] 

机构地区：[1]中国海洋大学物理海洋实验室山东省高校海洋-大气相互作用与气候重点实验室,山东青岛266100

出　　处：《现代农业科技》2015年第11期254-256,共3页Modern Agricultural Science and Technology

基　　金：国家自然科学面上基金项目(41275084)

摘　　要：利用1959年1月至2008年12月的ORA-S3资料,研究了印度洋塞舌尔穹隆区SST(海表面温度)的季节变化。结果表明穹窿区SST季节变化上呈现年周期变化特点,1—4月升高,在4月最高,5—8月降低,8月最低,9—12月升高。1—3月的SST的水平分布存在低值中心(虽然较弱)。4—5月等温线基本与纬线平行,SST北高南低。北半球夏秋季节等温线呈西北-东南向。混合层热收支表明海面净热通量项在1—3月、6—7月和10—12月SD区SST的季节变化中起重要的作用;4—5月的卷夹项为影响SST的主要物理过程;8—9月影响SST的主要物理过程为水平平流项。Based on ORA-S3 data from January, 1959 to December, 2008,the seasonal variability of the SST in the Seychelles Dome region of the Indian Ocean was studied.It is showed annual characteristics in the seasonal changes of SST in dome area,it warmed from January to April （warmest）, and cooled from May to August （coldest）, then warmed from September to December.On the horizontal distribution, the SST in SD exhibited low centers from January to March.The isotherm was parallel to latitude from April to May, and northwest-southeast in summer and autumn.The main results of the mixed layer heat budget showed that the net surface heat flux term was the most important physical processes from January to March ,from June to July and from October to December.The entrainment was bigger or appropriate with the net surface heat flux term from April to May.The horizontal advection term played the most important roles from August to September.

关 键 词：印度洋 塞舌尔穹隆区 海表面温度 季节变化 热收支 

分 类 号：P732.7[天文地球—海洋科学]