吕宋海峡及其周边海域海表温度的季节变化特征

利用海表温度的遥感资料,分析了吕宋海峡及其周边海域海表温度的季节变化及其区域特征,并初步分析了其主要特征的形成原因.研究结果表明:冬季海表温度除受太阳辐射、东北季风的影响外,还受该区域海流、海陆分布的影响,因此温度场呈现出多个水舌结构；夏季海表温度空间分布较均匀,冬季的水舌结构基本消失；同时在台湾梅峡西岸以及吕宋岛东、西两侧海域分别出现上升流导致的低温区和大于30.0 C的高温区,后者主要受海面辐射、海流等的影响.绝大部分研究海域内的海表温度极大值出现在7月,但在吕宋岛以西海区、台湾海峡中北部海区海表温度极大值分别出现在5月和8月；相对而言,海表温度的极小值主要出现在1月,研究区域东北部124°～126°E海域推迟到2月.

SST Seasonal Variation Characteristics in Luzon Strait and Its Around Seas

In this paper,we use remote sensing data to study the seasonal variations of SST in Luzon Strait and its around area,and preliminarily analyze the cause for some of the main characteristics.The research results indicate that in winter,besides solar radiation and the northeasterly monsoon,the factors that influence SST in the west and east of Luzon Strait is the sea surface currents and the distribution of sea and land,thus the SST field of the whole area displays several tongue-shaped structures;and in summer,SST is evenly-distributed,and the wintertime tongue-shaped structures disappear;the SST in the central Taiwan Strait is also affected by the South China Sea Warm Current;and there is a cold zone along the coast in the western Taiwan Strait due to the coastal upwelling;at the same time,there are two higher SST zones in the east and west of Luzon Island.Those SST variation characteristics are mainly influenced by solar radiation and currents.In most study area,the maximum SST occurs in July,some in May and August and part in June.Relatively speaking,in the most of the study area,the minimum SST appears in January,with only a small area in the northeastern study area in which it is put off to February.