摘要
基于现场实测水文泥沙资料,对乐清湾水动力条件及泥沙环境进行了研究。乐清湾为半封闭型淤泥质海湾,湾内波浪小、潮差大、深槽流速大、波浪掀沙作用不强、水体含沙量低;乐清湾底质以粉砂质粘土为主,与瓯江口以细砂为主的底质明显不同,乐清湾内水体含沙量也明显低于瓯江口,因此乐清湾受瓯江下泄泥沙直接影响较小,湾内泥沙主要来自近岸浅滩泥沙的就地悬浮搬运。
Based on the field hydrodynamic and sedimentary data, the natural conditions and sediment environ-ment of Yueqing Bay were studied in this paper. The conclusions are shown as follows：Yueqing Bay is a semi-en-closed clayey bay with small waves, and the tidal range and flow velocity in deep grooves are large. The suspended sediment concentration （SSC） in the bay is low. Seabed sediments in the bay are mainly silty clay and seabed sedi-ment is not active. The seabed sediment in Yueqing Bay is different to that at Oujiang estuary covered mainly with fine sand, and the SSC in Yueqing Bay is much lower than that in Oujiang estuary. Therefore, the sediment sources in Yueqing Bay mainly come from the local nearshore shoal, and there is small impact of sediments from Oujiang es-tuary on Yueqing Bay.
出处
《水道港口》
2014年第5期503-508,共6页
Journal of Waterway and Harbor
关键词
水动力
泥沙环境
泥沙来源
乐清湾
hydrodynamics
sediment environment
sediment source
Yueqing Bay
