珠江口以外海域温、盐度的断面分布特征--2001年5月与2002年11月航次

通过2001年5月与2002年11月珠江口以外海域的CTD观测资料，分析调查海域两个航次的温、盐断面分布特征，并将表层温度特征与卫星遥感图象进行比较．结果表明：（1）2001年5月，珠江口以外海域可观察到较弱的上升流迹象；而2002年11月除了陆坡处的海水有涌升趋向外，未见其它上升流迹象．（2）受径流的影响，2001年5月珠江口外表层盐度水平及垂直梯度均较大．（3）两个航次在远岸站位均未形成明显的温跃层，但具有较弱的盐跃层，2001年5月和2002年11月的盐跃层分别位于10～90m和100～120m．（4）两个航次在远岸站位的100-250m层均可观察到部分黑潮次表层水．

Analysis on Sectional Characteristics of Temperature and Salinity off the Zhujiang River Estuary--During the Cruises of May 2001 and November 2002

The sectional characteristics of temperature and salinity off the Zhujiang River estuary have been analyzed according to the CTD data and satellite-derived SST data during the cruises of May 2001 and November 2002.It is indicated that:(1) weak wind-driven upwelling appears in May,but no obvious upwelling exists in November except in the slope area where the sea water has a tendency to climb towards the slope.(2) affected by the freshwater from the Zhujiang River,the salinity has a large gradient both horizontally and vertically near the estuary.(3) the thermocline is not obvious either in May or in November.But weak halocline can be observed at the depth of 10~90 m in May and 100~120 m in November,respectively.(4) at the the depth of 100~250 m in the offshore area,the Kuroshio subsurface water is evidenced both in May and in November.