黄河三角洲清水沟河口区近期冲淤演变特征  

Accretion and erosion characteristics of Qingshuigou Lobe of the Yellow River Delta in the near future

作　　者：杨伟[1] 陈沈良[1] 谷国传[1] 陈小英[2] 

机构地区：[1]华东师范大学河口海岸学国家重点实验室,上海200062 [2]青岛海洋地质研究所,山东青岛266071

出　　处：《海洋通报》2010年第1期44-51,共8页Marine Science Bulletin

基　　金：海洋公益性行业科研专项经费项目(200805063);河口海岸学国家重点实验室科研业务课题(2008KYYW06)

摘　　要：黄河三角洲清水沟流路1996年汛前实施清8改汊工程后,河口区的冲淤发生了变化。据1996年10月至2005年9月清水沟滨海区固定断面测深资料的分析表明:新河口区总体上出现淤积,老河口区在总体上发生侵蚀。通过区域泥沙净冲淤量与入海沙量相关分析计算表明:新河口区的淤积速率与入海沙量呈正相关,老河口区的侵蚀速率与入海沙量互不相关。其原因在于:前者位于河流入海口,被海洋动力蚀失的泥沙能得到河流输沙的充足补给,属河流动力为主的河控型海岸;后者远离河流入海口,被海洋动力蚀失的泥沙得不到河流输沙的补给,属海洋动力为主的海控型海岸。Accretion and erosion of the estuarine area has been changing since 1996.The data of the fixed section of the new and old estuarine area at Qingshuigou Lobe between October 1996 and September 2005 was measured. According to the calculation of erosion and accretion of the sediment, it indicates that the new estuarine area is accretion zone which mainly shows accretion while the old estuarine area is erosion zone which is controlled by erosion basically. Based on the correlation calculation between the net accretion and erosion and sediment load in the study area, it reveals that the accretion rate of the new estuarine area has positive correlation with sediment load while the erosion rate of the old estuarine area has no obvious relation with it. The reasons are shown as follows： （1） the new estuary, near the river mouth, can obtain sediment supply by the Yellow River though it is suffered from the erosion by marine dynamics. So it is dominated by the fluvial dynamics. （2） On the other hand, the old estuary, far away from river estuary, can not get sediment supply and is suffered from serious erosion. So it is controlled by marine dynamics.

关 键 词：清水沟流路:相关分析 侵蚀 淤积 冲淤量 

分 类 号：P737.121[天文地球—海洋地质] P343.5[天文地球—海洋科学]