| 大鹏湾岬湾型海滩季节性变化特征及原因分析——以官湖海滩为例 |
| |
| 引用本文： | 刘星璐,徐昇,罗小峰,张功瑾,丁磊,路川藤,丁佩.大鹏湾岬湾型海滩季节性变化特征及原因分析——以官湖海滩为例[J].海洋工程,2022,40(4):44-52. |
| |
| 作者姓名： | 刘星璐 徐昇 罗小峰 张功瑾 丁磊 路川藤 丁佩 |
| |
| 作者单位： | 南京水利科学研究院 水文水资源与水利工程科学国家重点实验室, 江苏 南京 210029;深圳市规划和自然资源局, 广东 深圳 518038 |
| |
| 基金项目： | 国家重点研发计划资助项目(2019YFB1600700) |
| |
| 摘 要： | 随着全球海平面的上升及极端气象的频发，全球海滩总体呈现出一定的退化现象，海滩保护成为海岸带生态修复的焦点问题之一。我国华南地区岬湾型海滩分布广泛，以深圳市大鹏湾官湖海滩为代表，基于2020—2021年实测海滩剖面高程数据，分析岬湾型海滩季节性变化特征。研究表明，官湖海滩剖面坡度夏秋缓冬春陡，夏秋侵蚀冬春淤积；海滩沉积物粒径季节性变化不明显。海滩剖面形态受风浪、平均潮位的季节性变化控制，以夏秋季为例，平均潮位逐渐升高，南向波浪强度较大，在二者的共同作用下，海滩后滨侵蚀明显，泥沙离岸输运，并在前滨淤积。补沙方案宜在夏秋季进行，且重点区域为官湖海滩东侧与观海湾海滩，防御方案应主要削弱南向波浪。
|
| 关 键 词： | 岬湾型海滩 海滩剖面 季节性变化 沉积物粒径 海滩养护 官湖海滩 |
| 收稿时间： | 2021/10/9 0:00:00 |
Seasonal variation characteristics and causes of headland-bay beaches: A case study of Guanhu beach |
| |
| LIU Xinglu,XU Sheng,LUO Xiaofeng,ZHANG Gongjin,DING Lei,LU Chuanteng,DING Pei.Seasonal variation characteristics and causes of headland-bay beaches: A case study of Guanhu beach[J].Ocean Engineering,2022,40(4):44-52. |
| |
| Authors: | LIU Xinglu XU Sheng LUO Xiaofeng ZHANG Gongjin DING Lei LU Chuanteng DING Pei |
| |
| Institution: | State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;Planning and Natural Resources Bureau of Shenzhen Municipality, Shenzhen 518038, China |
| |
| Abstract: | With the rise of global sea level and the frequent occurrence of extreme weather, the global beaches show a certain degradation phenomenon in general, and beach protection has become one of the focal issues of coastal zone ecological restoration. We take Guanhu beach as the representative of headland-bay beach and analyze the seasonal change characteristics of it based on the measured beach profile elevation data from 2020 to 2021, and investigate the causes of seasonal change. The research shows that the slope of Guanhu beach profile is slow in summer and autumn and steep in winter and spring. Beach has erosion in summer and autumn and siltation in winter and spring; the seasonal change of beach sediment grain size is not obvious. The beach profile morphology is controlled by the seasonal changes of wind and waves and mean tide level. For example, the mean tide level gradually rises and the southward wave intensity is higher in summer and autumn. Under the joint action of both, the beach back shore erodes obviously and the sediment is transported offshore, which results in the front shore silting. The sand replenishment program should be carried out in summer and autumn, and the key areas are the east side of Guanhu beach and Guanhai Bay beach. The defense works should mainly weaken the southward waves. |
| |
| Keywords: | headland-bay beaches beach profiles seasonal variation sediment grain size beach maintenance Guanhu beach |
|
| 点击此处可从《海洋工程》浏览原始摘要信息 |
| 点击此处可从《海洋工程》下载免费的PDF全文 |
|
