摘要
于1986年秋季和1987年春季分别对浙江金塘水道进行了十船同步大、中、小潮的周日水文泥沙观测。观测数据的分析和计算表明,金塘水道东部的净输沙特征为水道北侧向西搬运而南侧向东搬运,西向输沙大于东向输沙,水道西部表层悬沙向东搬运,而中、底层向西搬运,但净输沙方向指向杭州湾。因此,金塘水道很可能是海域泥沙向杭州湾输送的一条通道。在金塘水道内部存在着一个逆时针的悬沙环流,悬沙有向南岸输送并堆积的趋势,这是金塘水道中、东部形成的逆时针潮余流环流以及水道南北两侧潮流流速的差异所致。
25-hour synchronous measurements of current velocity,water depth and SPM concentration at 10 stations were made during the spring,inter-medium and neap tides in October-November,1986 and April-May,1987.An analysis of the obtained data shows that in the eastern part of the channel the net SPM transport is westward in the northern side of the channel and eastward in the southern side,while in the western part of the channel the net transport heads east in the surface layer but westward in the middle and bottom layers of the water column.And in both pa.rts of the channel the net cross-sectional transport directs westward.Therefore,the Jintang Channel is probably a passage through which sediments are transported from open sea areas towards the Hangzhou Bay.There exists a counterclockwise suspended sediment circulation within the channel which tends to move SPM towards the southern bank of the channel.
出处
《海洋通报》
CAS
CSCD
北大核心
1989年第4期41-50,6,共11页
Marine Science Bulletin
