海岸沙丘近表层粒度对台风的响应

发布时间：2018-01-09 10:08

本文关键词：海岸沙丘近表层粒度对台风的响应　出处：《中国沙漠》2016年06期 　论文类型：期刊论文

【摘要】：根据"麦德姆"强台风登陆前后福建平潭岛海岸前丘、爬坡沙丘、横向沙丘和海岸沙席等海岸沙丘近表层的粒度数据,分析了台风登陆前后典型海岸沙丘近表层粒径组成与粒度参数的变化,初步总结了海岸沙丘近表层粒度对台风的响应特征。整体而言,平潭岛海岸沙丘在"麦德姆"登陆前后近表层的粒度变化较小,对台风的响应变化不大且基本无等级性的差别,但海岸沙丘不同类型及不同部位的响应程度并不一致,主要是由海岸沙丘沙与海滩沙粒度的相近性及台风过程中大风的非选择性风蚀所致,同时也受到不同类型沙丘的形态和规模等的影响。
[Abstract]:According to the granularity data of the coastal dune near the surface of Pingtan Island, Fujian Province before and after the strong typhoon "Medham" landed, the sand dunes were climbing, transverse dunes and coastal mats. The changes of particle size composition and particle size parameters of typical coastal dune near surface before and after typhoon landing were analyzed, and the response characteristics of coastal dune near surface particle size to typhoon were preliminarily summarized. The grain size of the sand dunes near the surface before and after "Medham" landing on Pingtan Island is relatively small, and the response to typhoon has little change and there is basically no grade difference. However, the responses of different types and different parts of coastal dunes are not consistent, mainly due to the similarity of sand grains between coastal dunes and beaches and the non-selective wind erosion of strong winds during typhoons. At the same time, it is also affected by the shape and size of different types of sand dunes.
【作者单位】：中山大学地理科学与规划学院/广东省城市化与地理环境空间模拟重点实验室;德阳市国土资源局;
【基金】：国家自然科学基金项目(41371030)
【分类号】：P737.1
【正文快照】： 0引言随着激光雷达和三维激光扫描等新技术的应用[1-3],基于台风(风暴或飓风)对波浪、海滩与沙丘交互作用的重要性,台风与海岸风沙地貌形成及演化的相互关系日益受到关注。国外美国、加拿大、墨西哥、英国、法国、葡萄牙、丹麦和波兰等国开展了海岸沙丘对台风响应的研究[4-17]

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