台湾东南海域的温盐分布特征研究  

The Structures of Temperature and Salinity Offshore Southeastern Taiwan

作　　者：魏晓[1] 

机构地区：[1]国土资源部海底矿产资源重点实验室,广州海洋地质调查局

出　　处：《南海地质研究》2015年第1期87-103,共17页Gresearch of Eological South China Sea

基　　金：中国地质调查局项目(编号:1212011220117)

摘　　要：利用实测的温盐深数据对台湾东南海域夏季的温盐分布特征进行统计分析，结果表明，受黑潮的影响，研究区海域表层温度在28℃以上，呈北低南高、西高东低的特征；表层盐度在32-3～34．7psu左右，与温度分布特征呈反相关，高温区域盐度较低，低温区域盐度较高。由于黑潮的影响深度可达数百米，因此区域内的温跃层和盐跃层的位置较深，层化不显著，厚度较大且强度不均匀。且存在着厚度较大的障碍层，厚度一般在50m以上。通过断面数据可知，表层温度基本都在较高的范围内，且高温水层很厚，通过盐度的变化可知，在100～400m的水深范围内，断面内都存在一个高盐水层，走向基本为南北向，最厚的区域分布在122°E～124°E之间，向西巴士海峡一侧和向东西菲律宾海盆一侧逐渐递减，表现出黑潮流经的典型特征。Based on 28 CTD stations analysis data, the research results showed that under the influence of the Kuroshio Current, the sea surface temperature was higher than 28 ℃, and it decreased from north to south and west to east. The surface salinity was about 32.3-34.7 psu/m, and it correlated to the temperature distribution. The thermocline and halocline of the location were very deep because of the influence of the Kuroshio. The layers were thick in more than 50 meters. According to the cross section data, the surface temperature was at a higher level, and the high temperature water layer was very thick. There was a high salt layer with south-north direction in the 100-400 m depth. The thickest high salt layer distributed between 122°E and 124°E and decreased to Bashi Channel in the west and to the Philippine Sea Basin in the east. It showed the influence of the Kuroshio Current.

关 键 词：台湾东南海域 巴士海峡 混合层 温跃层 盐跃层 

分 类 号：P731.11[天文地球—海洋科学]