浙江乐清湾现代沉积与悬沙质量浓度分布特征及意义

通过对乐清湾野外考察、表层沉积物的粒度分析和水样的悬沙质量浓度分析，探讨了乐清湾现代沉积和悬沙质量浓度分布特征。研究结果表明，乐清湾现代沉积主要以细颗粒沉降为主，粉沙和粘土总含量占90％以上；悬沙质量浓度具有从湾口向湾内递减的变化趋势，湾口悬沙质量浓度为0．2～0．25kg／m^3，而湾内质量浓度小于0．01kg／m^3。半封闭性海湾和以外海来沙为主的物质来源共同决定沉积物的特征及悬沙质量浓度的空间变化规律，而泥沙来源及沉积过程的研究将为港湾治理工程提供重要的依据参数。

Modern sedimentation and suspension in Yueqing Bay, Zhejiang

Upon a marine survey in Yueqing Bay,Zhejiang,on modern sedimentation and suspension,the distribution and concentration of sediment in the bay are studied.Results show that the recent sediments are mainly fine-grained composing 90% of silt and clay.Suspension concentration decreased from bay mouth(0.2~0.25 kg/m~3) to inner bay(0.01 kg/m~3).This distribution pattern was formed due to semi-closure of the bay and outer sea sourced sediments,which would be informative for marine construction and remediation.