摘要
利用岸滩剖面高程监测、沉积物粒度变化和动力环境分析的方法,以海阳市沙滩侵蚀演化过程为例分析了山东半岛东部典型砂质海岸的侵蚀特征和影响因素。结果表明,海阳市沙滩整体以侵蚀为主,2018—2019年沙滩总侵蚀量为2.48×10^(4)m^(3)。其中,丁字嘴沙滩以侵蚀为主,但两侧受河口的影响呈现局部滩面稳定和后滨弱淤积的现象;潮里—庄上—羊角畔沙滩滩面侵蚀从西向东逐渐增强;万米沙滩中部侵蚀严重,两端相对较弱。表层沉积物由陆向海逐渐变细,但整体上呈现粗化的趋势。波浪和极端天气是控制沙滩侵蚀变化的重要动力因素,而坡度则是导致沙滩剖面形态变化和表层沉积物差异的重要因素之一。
This study discusses the erosion characteristics and influencing factors of typical sandy coasts in the Shandong Peninsula,by using the method of elevation monitoring of beach profile and sediment grain size analysis.The results show that,the beaches in the Haiyang City are mainly eroded.The total amount of erosion from 2018 to 2019 was 2.48×10^(4)m^(3).The Dingzizui beach is dominated by erosion,but both sides of the beach are affected by the estuary,showing that the beach surface is stable and the backshore is weakly silted.The erosion of the Chaoli-Zhuangshang-Yangjiaopan beach has gradually increased from west to east.The central part of the the Wanmi beach is heavily eroded and the two ends were relatively weak.The grain size of surface sediments gradually becomes finer and finer from land to sea,but the overall trend appears to be coarsening.Wave and extreme weather are two important dynamic factors controlling the change of sandy beach erosion,and the slope of beach is an important factor leading to the differences of sandy beach profile and surface sediments.
作者
魏霞
高伟
李萍
刘杰
徐元芹
张卓立
李安龙
WEI Xia;GAO Wei;LI Ping;LIU Jie;XU Yuanqin;ZHANG Zhuoli;LI Anlong(College of Marine Geosciences,Ocean University of China,Qingdao 266100,China;Key Laboratory of Marine Geology and Metallogeny,First Institute of Oceanography,MNR,Qingdao 266061,China;Laboratory for Marine Geology,Qingdao Marine Science and Technology Center,Qingdao 266237,China)
出处
《海洋科学进展》
CAS
CSCD
北大核心
2024年第2期312-324,共13页
Advances in Marine Science
基金
国家重点研发计划项目(2022YFC3106100)
山东省自然科学基金项目(ZR2021MD098)
山东省重大科技创新工程专项(2018SDKJ0503-3)。
关键词
砂质海岸
海岸侵蚀
侵蚀强度
影响因素
海阳
sandy coast
coastal erosion
erosion intensity
influencing factors
Haiyang
