1999年 8月厦门大学和福建海洋研究所利用“延平 2号”调查船在台湾海峡中西部进行了大面综合调查 ,获得了 2 2个站位的 CTD资料 .对其中 4个断面的现场条件密度分布图进行了分析 ,从中可得出 :1)广东南澳 ,福建东山、平潭一带上升流现象明显 ;2 )在海峡南部的 NW- SE向断面中部有一股低密 (σstp<2 1)水体自南向北扩展并且逐渐变性 ,宽度和厚度逐渐变小 ,密度逐渐增大 ,密度梯度逐渐减小We analyzed four sectional distributions of density in the Taiwan Strait during August, 1999. The results show that there were three upwelling zones located near Nan ao, Dongshan and Pingtan during the investigation period. There was a current with low density ( σ stp <21) going into the Taiwan Strait from the Northern South China Sea through the middle of the sections. The low density water changed its characters as it flowed northeastward. The width and the depth of the current got smaller while the density became higher with lower density gradient.国家自然科学基金重点项目!( 4 96362 2 0 );; 福建省科技资助项目!( 98- Z- 179
