文献类型：期刊文献

中文题名：海口湾中间岸段海滩剖面短期时空变化及沉积动态分析

英文题名：Analysis of short-term temporal and spatial changes and sedimentary dynamics at the middle section of Haikou Bay Beach

作者：朱士兵[1];胡丹妮[1];张会领[1];曾春华[1];李泽华[1];李志强[1]

机构：[1]广东海洋大学电子与信息工程学院海洋工程学院

年份：2019

卷号：38

期号：5

起止页码：77

中文期刊名：热带海洋学报

外文期刊名：Journal of Tropical Oceanography

收录：CSTPCD、、北大核心2017、CSCD2019_2020、北大核心、CSCD

基金：国家自然科学基金(41676079);广东海洋大学创新强校工程项目(Q18307)~~

语种：中文

中文关键词：海滩剖面;时空变化;经验正交函数;沉积物;台风

外文关键词：beach profile;temporal and spatial variation;empirical orthogonal function;sediment;typhoon

中文摘要：海滩的演变特征是海岸地形动力学研究的一个重要内容。基于在海口湾假日海滩连续33d的地形剖面观测数据和台风前后表层沉积物粒度参数数据,分析了海口湾中间岸段海滩剖面及沉积物变化特征。利用经验正交函数分析,得出观测期间海口湾海滩有4个主要模态,分别对应于涌浪对海滩的建设过程、当地风浪对海滩的侵蚀过程、台风对海滩的侵蚀过程和海滩特征地形的调整过程。研究结果表明:涌浪和风浪对海滩剖面的作用受到了潮位调制的影响;海口湾海滩显示出遮蔽型海滩变化特征;沉积物粒度参数对海滩变化反应敏感,可以提供丰富的海滩演变信息。

外文摘要：Beach evolution is an important topic in beach morphodynamic research. Based on beach profile data and surface sediment data observed for consecutive 33 days at the middle section of Haikou Bay Beach, characteristics of beach profile changes and sediment dynamics were analyzed. The empirical orthogonal function(EOF) analysis results showed that the profile variation contains four modes during the observation period, which corresponded to the beach construction process by swells, the beach erosion process by seas induced by local wind, the erosion process by typhoons, and the adjustment of characteristic topography, respectively. Influences of swells and seas on the beach profile were modulated by tide level. The analysis of beach profile variation and the geological background showed that Haikou Bay Beach has the characteristics of sheltered beach. Results also showed that grain size parameters of sediment were sensitive to beach changes, and can provide more abundant information on beach evolution.