黄河三角洲海岸剖面类型与演变规律  

Coastal Profile Types and Evolution Regularities of the Yellow River Delta

作　　者：陈小英[1] 陈沈良[1] 于洪军[2] 张建华[3] 徐丛亮[3] 

机构地区：[1]华东师范大学河口海岸国家重点实验室,上海200062 [2]国家海洋局第一海洋研究所,山东青岛266061 [3]黄河口水文水资源勘测局,山东东营257091

出　　处：《海洋科学进展》2005年第4期438-445,共8页Advances in Marine Science

基　　金：国家重点基础发展研究规划项目--三角洲海岸侵蚀与岸坡失稳灾害的防护政策(2002CB412408)

摘　　要：根据1976—2002年黄河三角洲滨海区36个断面的地形实测资料以及利津水文站的水沙资料,运用动力地貌学的方法,对黄河三角洲海岸剖面形态及冲淤演变进行了研究。结果表明,黄河三角洲海岸剖面可分为建设型、破坏型和稳定型三种基本类型。建设型海岸分布于行水河口,等深线向海推进的距离取决于入海泥沙的堆积过程与海洋动力对泥沙的侵蚀过程两者之间的对比;破坏型海岸主要分布于停止行河不久的废弃河口附近,剖面侵蚀深度与海洋动力条件尤其是潮流流速大小密切相关;而稳定型海岸主要分布于长时间不行河的湾湾沟口附近和广利河以南岸段,前者受河海动力因素影响较小,而后者主要与莱州湾潮流流场有关。Based on the observed topographic data on 36 profiles in the Yellow River dalta littoral area and the observed hydrographic and sediment data at the Lijin Hydrologic Station, the dynamic geomorphology method is used to study the coastal profile forms and scour-deposition evolution of the Yellow River delta. It is showm from the study results that the coastal profiles of the Yellow River delta can be classified as three basic types, constructive profile, destructive profile and stable profile. The constructive profiles are distributed in the flowing river mouth area, and the prograding distance is dependent on the ratio of coastal accretion to erosion; the destructive profiles are mainly distributed in the abandoned river mouth area, and their erosional depths are closely related with the ocean dynamics, especially the tidal current speed; and the stable profiles are mainly distributed in the Wanwangou River mouth area and in the coastal area south of the Guangli River mouth, the former area is less affected by the ocean dynamics, and the latter area is related with the tidal current field in the Laizhou Bay.

关 键 词：黄河三角洲 海岸剖面 冲淤演变 侵蚀深度 

分 类 号：P737.12[天文地球—海洋地质]