CAJ | 학술논문

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.
황하삼각주청수구류로1996년신전실시청8개차공정후,하구구적충어발생료변화.거1996년10월지2005년9월청수구빈해구고정단면측심자료적분석표명:신하구구총체상출현어적,로하구구재총체상발생침식.통과구역니사정충어량여입해사량상관분석계산표명:신하구구적어적속솔여입해사량정정상관,로하구구적침식속솔여입해사량호불상관.기원인재우:전자위우하류입해구,피해양동력식실적니사능득도하류수사적충족보급,속하류동력위주적하공형해안;후자원리하류입해구,피해양동력식실적니사득불도하류수사적보급,속해양동력위주적해공형해안.
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.