根据 1 998年 8月台湾海峡表层温、盐度的观测结果 ,分析了调查期间所出现的几个低温高盐区 ,结果表明 :(1 )东山和南澳近岸海域出现 2个低温高盐区 ,温度低达 2 3 5℃ ,盐度接近 3 4 0 ,而且在此低温高盐区的南侧存在明显的温、盐度锋面 ,其强度分别可达 0 1 8℃·km- 1 和 0 1 4·km- 1 ;(2 )平潭岛以南及其东北部近岸海域存在范围较大的低温高盐区 ,其中平潭岛以南近岸的表层水温比邻近海域约低 1 5— 3 0℃ ;(3 )在泉州外海也出现一个低温高盐区 ,温度低于 2 7 0℃ ,盐度高于 3 4 0。Several zones of low temperature and high salinity were analyzed according to the underway measurements of temperature and salinity of surface water conducted in the Taiwan Strait in August,1998. The results showed that:(1) There were two zones of low temperature and high salinity in the nearshore zones off Dongshan and Nan'ao,with temperature down to 23 5℃ and salinity about 34 0. In addition,a temperature and salinity front could be clearly seen in the southern side of these two zones,with the strength of 0 18℃·km -1 and 0 14·km -1 respectively. (2) There existed low temperature and high salinity zones in the nearshore areas to the south and northeast of the Pingtan Island,the sea surface temperature in the former was about 1 5—3 0℃ lower than its adjacent sea areas. (3) In the sea area off Quanzhou,a low temperature and high salinity zone was also evident, with the sea surface temperature lower than 27 0℃ and salinity higher than 34 0.福建省科技项目 (98-Z -1 79) ;; 国家自然科学基金重点项目 (4 963 62 2 0
