崎岖列岛邻近海域的水文泥沙特征

崎岖列岛邻近海域具有良好的水深条件 ,为了开发和利用这一资源 ,于 1 996年冬季和1 997年夏季 ,对该海域进行了水文泥沙调查。分析结果表明 ,该海域的水动力条件取决于长江和钱塘江径流与潮流、波浪的力量对比 ;其泥沙的输运和沉积主要受制于长江口南下泥沙量的多少及水动力的强弱。从动力学的角度阐述了该区泥沙输运和沉积机制 ,得出流急、悬沙浓度高而落淤少是该地区的特点。

Dynamical characteristics of current and suspended sediment of the Qiqu Archipelago

The Qiqu Archipelago lies in the south of Changjiang Estuary, the west of East China Sea, the outside north of Hangzhou Bay,and on the south\|east of Luchaogang of Nanhui Its dynamical characteristics of water current and suspended sediment are very complex because of its unique trumpet\|shape and topography of strait Its characteristic of dynamic condition is decided by the contrast of the forces between river runoff and tide flow and wave The transportation and deposition of sediments are mainly decided by the suspended sediment concentration from Changjiang Estuary and the strength of the flow Silt transportation and sedimentary mechanism in the area are discussed from dynamics with the data of 1996 (winter) and 1997 (summer), which shows that rapid current, high suspended sediment concentration and little deposition are the main features of the area.