Coastline configuration and geomorphologic development mode of arc-shaped coast in South China |
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| Authors: | DAI Zhijun LI Chunchu |
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| Institution: | 1. Institute of Estuarine and Coastal Research, Zhongshan University, Guangzhou 510275, China|
2. State Key Lab of Estuarine &|Coastal Sediment Dynamic and Morphodynamics, East China Normal University, Shanghai 200062, China |
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| Abstract: | Coastline configuration indexes of 34 typical arc-shaped coasts in South China are investigated by the method of principal component analysis, and meanwhile deposition and geomorphologic features of arc-shaped coast are also analyzed. The results show: (1) The configuration of arc-shaped coast in South China is of the characteristic of variability and complexity. (2) The wave power and the openings of the bay are the decisive factors to result in the changes of the configuration of the arc-shaped coast in South China, however, incidence direction of the wave has no effect on configuration development of the coast. (3) Commonly, geomorphologic modes of the arc-shaped coast system in South China consist of barriers, lagoons and tidal-inlets, and can be divided into four types: the openings of the bay leaning to the east, the openings of the bay leaning to the south, the openings of the bay leaning to the west and the openings of the bay leaning to the north. |
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| Keywords: | coastline configuration geomorphologic mode arc-shaped coast South China principal component analysis |
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