钦州湾水下动力地貌特征  

Features of Underwater Dynamic Geomorphology of the Qinzhou Bay

作　　者：黎广钊[1] 梁文[1] 刘敬合[1] 

机构地区：[1]广西海洋研究所,广西北海536000

出　　处：《地理学与国土研究》2001年第4期70-75,共6页Geography and Territorial Research

基　　金：广西自然科学基金资助项目 (桂科自 0 0 0 70 0 9)

摘　　要：钦州湾水下动力地貌主要有潮间浅滩、河口沙坝、潮沟、潮流沙脊、潮流冲刷深槽、水下拦门浅滩、水下斜坡。该文阐述钦州湾的入海河流、潮汐、潮流、波浪等水动力的基本特征 ,分析水下地貌类型的形成及其空间分布和沉积物组成 ,并探讨动力地貌形成原因与机理及海岸动态变化趋势。The major underwater geomorphological types in the Qinzhou Bay in the Autonomous Region of Guangxi are intertidal shoal , river mouthe bar, tidal ditch , tidal current sand ridage, tidal current deep trough, underwater block door shallow beach and underwater slope according to the data of spot investigation and information analysis. Basic characteristics of the hydraulic dynamic of the river, tide, tidal current and wave are expounded; formation of underwater geomorphological types and its space distribution and sedimental composition are analysed in the paper. Geomorphogic cause of formation and mechanism, tendency of coastal developments are also discussed.

关 键 词：水动力 水下地貌 地貌成因 海岸动态 钦州湾 潮间浅滩 潮沟 潮流沙脊 河口沙坝 

分 类 号：P737.22[天文地球—海洋地质]