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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32.3~34.7 psu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50 m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100~400 m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。
The results of temperature and salinity distribution in southeastern Taiwan in summer showed that the surface temperature in the study area was above 28 ℃ due to the influence of Kuroshio, The surface salinity is about 32.3 ~ 34.7 psu, which is inversely correlated with the temperature distribution. The salinity in the high temperature region is low and the salinity in the low temperature region is high. Due to the influence of Kuroshio, which can reach several hundred meters in depth, the thermocline and salinity layers in the area are located at a deeper level with less stratification, thicker and less uniform in intensity. And there is a thick barrier layer, the thickness is generally above 50 m. From the cross-section data, it can be seen that the surface temperature is basically in the higher range, and the high-temperature water layer is very thick. According to the change of salinity, it can be seen that there is a high saline water layer in the water depth of 100-400 m, It is basically a north-south direction. The thickest area distributes between 122 ° E and 124 ° E, descending toward the west side of the Bashi Channel and to the east and west of the Philippine Sea basin, showing the typical characteristics of the Kuroshio Current.