摘要
In this paper, sediment samples were collected along the Wanquan beaches and sieved in the laboratory in order to obtain the grain size distributions and associated parameters, i.e. mean grain size, sorting coefficient and skewness. Furthermore, we have calculated the longshore drift sediment transport rates and equilibrium cross-sectional areas of the entrance channel by using the method of sedimentary dynamics. The results indicate that the longshore drift sediment transport is dominated by waves with a direction from south to north, which result in rapid changes of the entrance channel. Therefore, some suggestions were proposed for improving the water quality and restoring the ecosystem of estuary. The engineering method includes increasing the sea-route of entrance channel, tidal prism and water exchanges in Shamei Lagoon.
In this paper, sediment samples were collected along the Wanquan beaches andsieved in the laboratory in order to obtain the grain size distributions and associated parameters,i.e. mean grain size, sorting coefficient and skewness. Furthermore, we have calculated thelongshore drift sediment transport rates and equilibrium cross-sectional areas of the entrancechannel by using the method of sedimentary dynamics. The results indicate that the longshore driftsediment transport is dominated by waves with a direction from south to north, which result in rapidchanges of the entrance channel. Therefore, some suggestions were proposed for improving the waterquality and restoring the ecosystem of estuary. The engineering method includes increasing thesea-route of entrance channel, tidal prism and water exchanges in Shamei Lagoon.
基金
National Natural Science Foundation of China
No.40106009
Major State Basic Research Development Program of China
No.2002CB412401
关键词
河口
万泉河
海岸
生态环境
海南岛
沉积学
tidal inlet
geomorphic evolution
environment engineering
Wanquan RiverEstuary
