Institute of Estuarine and Coastal Research,Zhongshan University,Guangzhou 510275,China;
State Key Lab of Estuarine & Coastal Sediment Dynamic and Morphodynamics,East China Normal University,Shanghai 200062,China;
Institute of Estuarine and Coastal Research,Zhongshan University,Guangzhou 510275,China;
coastline configuration; geomorphologic mode; arc-shaped coast; South China; principal component analysis;