华南岬间弧形海岸平面形态影响因素及类型  

Influencing factors and classifications of arc-shaped coasts in South China

作　　者：李志强[1] 李维泉[1] 陈子燊[2] 朱雅敏[3] 

机构地区：[1]广东海洋大学工程学院,湛江524088 [2]中山大学水资源与环境系,广州510275 [3]国家海洋局珠海海洋环境监测中心站,珠海519015

出　　处：《地理学报》2014年第5期595-606,共12页Acta Geographica Sinica

基　　金：国家自然科学基金项目(40806036);广东省教育厅育苗工程项目;广东海洋大学自然科学基金青年团队项目~~

摘　　要：对华南47个典型弧形海岸,选取表征海岸平面形态特征、海岸水动力等10个地貌动力要素,利用主成分、分层聚类和非度量多维尺度分析等方法对影响华南弧形海岸的主要因素及海岸类型进行研究,结果表明:(1)华南弧形海岸平面形态主要受到地质构造、水动力、海陆供沙等要素共同作用;(2)华南弧形海岸可以分成4个大类。第一类型是中、强潮型海岸;第二类型主要为强浪型海岸;第三类型是地质构造控制的大型弧形海岸;第四类型只有洋浦湾与铺前湾,是比较独特的弧形海岸类型;(3)利用非度量多维尺度分析探究地貌动力要素及海岸形态与类型的关系,说明华南弧形海岸聚类分析结果具有一定的客观性。Using the principal component analysis, hierarchical cluster analysis and non- metric multidimensional scaling analysis, 10 factors affecting coastal plain shape and hydrodynamic of 47 arc-shaped coasts were analyzed, aiming to study the influencing factors and classification spectrum of arc-shaped coast in South China. The results show that： （1） the plane forms of South China＇s arc-shaped coasts were mainly controlled by geological structure conditions, hydrodynamic conditions （wave and tidal range） and sediment supply. （2） The arc-shaped coasts in South China can be divided into four categories, and each category has several small types. The first category is meso- and macrotidal coast; the second is strong wave coast; the third is geological structure controlled large arc-shaped coast; the fourth, consisting of Yangpu Bay and Puqian Bay, is a unique type of arc-shaped coast. （3） Nonmetric multidimensional scaling analysis reveals the effects of morphodynamic factors on the coastal shape and the types, which shows that the categories are objective. These conclusions will be helpful to the arc-shaped coasts processes research and engineering constructions in South China.

关 键 词：海岸平面形态 弧形海岸 主成分分析 聚类分析 非度量多维尺度分析 

分 类 号：P737.12[天文地球—海洋地质]