海南万宁岬湾海岸海滩稳定性研究
发布时间：2019-02-13 16:11
【摘要】：岬湾海岸海滩的稳定性及其演变是砂质海岸研究的重要内容。基于多期遥感影像、海滩沉积物粒度分布,并采用岬湾海滩平衡形态模型(MEPBAY),分析探讨了海南岛东部万宁4个典型岬湾海岸海滩的稳定性及其模型的应用。研究表明,除东澳湾凸角处于不稳定状态,其余海岸处于静态或准静态平衡状态;岬湾海滩沉积物粒度在遮蔽段和开敞段有明显的差异,相邻海滩之间没有明显的泥沙交换,每个岬湾海滩都是相对独立的地貌单元;模型中上岬角控制点选取应考虑岛礁及水下礁坪;抛物线模型可以拓展应用于有离岸岛情况下的海湾。研究成果可为岬湾海滩的稳定性评估和管理提供科学依据。
[Abstract]:The stability and evolution of promontory beach is an important part of sandy coast research. Based on multi-stage remote sensing images and beach sediment granularity distribution, the stability of four typical coastal beaches in Wanning Bay, East Hainan Island, and their application were studied by using (MEPBAY), model of Cape Bay beach equilibrium morphology. The results show that, except the convex corner of Dongao Bay is in unstable state, the other coasts are in static or quasi-static equilibrium state. There are obvious differences in sediment granularity between sheltered section and open section, there is no obvious sediment exchange between adjacent beaches, and each beach is a relatively independent geomorphological unit. In the model, the top headland control point should be selected by considering the reef and the underwater reef flat, and the parabola model can be extended to the bay with offshore islands. The results can provide scientific basis for the stability assessment and management of Cape Bay beach.
【作者单位】： 华东师范大学河口海岸学国家重点实验室;
【基金】：海洋公益性行业科研专项经费项目(201405037)
【分类号】：P737.1
，
本文编号：2421717
[Abstract]:The stability and evolution of promontory beach is an important part of sandy coast research. Based on multi-stage remote sensing images and beach sediment granularity distribution, the stability of four typical coastal beaches in Wanning Bay, East Hainan Island, and their application were studied by using (MEPBAY), model of Cape Bay beach equilibrium morphology. The results show that, except the convex corner of Dongao Bay is in unstable state, the other coasts are in static or quasi-static equilibrium state. There are obvious differences in sediment granularity between sheltered section and open section, there is no obvious sediment exchange between adjacent beaches, and each beach is a relatively independent geomorphological unit. In the model, the top headland control point should be selected by considering the reef and the underwater reef flat, and the parabola model can be extended to the bay with offshore islands. The results can provide scientific basis for the stability assessment and management of Cape Bay beach.
【作者单位】： 华东师范大学河口海岸学国家重点实验室;
【基金】：海洋公益性行业科研专项经费项目(201405037)
【分类号】：P737.1
，
本文编号：2421717
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