每年春夏之际,在紧靠苏北浅滩东侧海面有一冷水域存在。黄海西南部深层冷水的逐月南移并逆坡爬升是这一冷域的主要成因;而苏北外海水下三角洲北侧海底深沟的存在决定了这一冷域的位置。另外,春夏期间在32°N,124°—124°30′E海面,也经常观测到另一冷域的存在。据分析,此冷水主要来自黄海西北部的深层,而冷水的上涌则与前期台湾暖流的“脉冲型”北伸有关。 Spring and summer each year, in the immediate vicinity of northern Jiangsu Shahai a cold water there. The southwestern part of the Yellow Sea, with the southward migration of deep cold water and the reverse slope climb, is the main cause of this cold region. The existence of deep seabed in the northern submarine delta of the northern subtropics determines the location of this cold region. In addition, the presence of another cold zone is often observed at 32 ° N, 124 ° -124 ° 30’E sea level during spring and summer. According to the analysis, this cold water comes mainly from the deep northwest of the Yellow Sea, while the upwelling of cold water is related to the “pulse” northward extension of the warm current of Taiwan.