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本文分析了碣石潟湖口外海岸水动力条件、沉积重矿物和地貌动态,揭示其沿岸泥沙运移的主要方向是自SE到NW;求出用波能估算当地沿岸输沙的经验公式;说明潮汐汉道东南岸及附近海岸的侵蚀是目前运动泥沙的主要来源,潮汐汊道的不稳定性是由于在潟湖内建造了大堤、减小潮棱体的结果,但兴建中的汊道口东堤竣工后,潮汐汊道的稳定性将有所提高,应用对数螺线形海岸理论能较好地解释和预测研究区的岸线变化。
In this paper, the hydrodynamic conditions, the heavy minerals and geomorphic dynamics of sediment exposed offshore Jieshi Lagoon Estuary are analyzed. The main directions of sediment transport along the coast are from SE to NW. The empirical formula for estimating sediment transport along the coast is obtained. The erosion of the southeast coast of the Han dynasty and the nearby coast is the main source of the current movement and sediment. The instability of the tidal corridor is due to the construction of the levee in the lagoon and the reduction of the tidal prism body. However, the erection of the embankment After completion, the stability of the tidal channel will be improved. Applying the logarithmic spiral coast theory to explain and predict the change of shoreline in the study area well.