海洋地质与第四纪地质2025，Vol.45Issue(2)：55-67,13.DOI:10.16562/j.cnki.0256-1492.2023121202
浙江省沿海砾石滩地形地貌特征与发育模式
Topographic and geomorphological characteristics and development pattern of gravel beaches along the coast of Zhejiang Province
摘要
Abstract
Using on-site survey data from July 2019 and July-August 2020 in Zhejiang Province,combined with historical data,we systematically analyzed the characteristics of topological profiles,planar morphology,and surface sediment grain size of gravel beaches in various locations of Zhejiang Province.Meanwhile,using mathematical statistical methods such as correlation analysis,principal component analysis,cluster analysis,and non-metric multidimensional scaling,,the main factors affecting the development of the gravel beaches were explored,and the development pattern of the gravel beaches was elucidated.Results indicate that in the profile morphology,it can be seen that most of the gravel beach profiles are oblique line typed,and some of them have a beach berm.In planform,gravel beaches in the central Zhejiang sea area are relatively larger,have weaker headland,and thus the shielding ability is weak and undergo stronger wave action.In distribution pattern of sediment particle size,the gravel beaches north of Que'er Ao Island in the central Zhejiang sea area have coarsest pebbles and thicker deposits,while those in the central and southern Zhejiang sea areas have more prolate and club-shaped gravels.The gravel beaches in Zhejiang could be placed into three groups by cluster analysis.The first group is mainly seen in the central and southern Zhejiang,and is strongly affected by tidal currents.The second group is mainly distributed in the northern Zhejiang,with weaker tidal effects and smaller.The third group distributed more sporadically in the province and relatively coarser.The geological structure background,hydrodynamic environment,and sediment supply have important impacts on the formation process of the gravel beaches,among which the geological structure background is the main factor on beach development.For the ecological protection and ecological restoration regarding the gravel beaches,the influences of wave action and tidal action must be considered.关键词
平面形态/发育模式/剖面形态/沉积物粒度/砾石滩Key words
plane morphology/developmental pattern/profile morphology/sediment grain size/gravel beach分类
海洋学引用本文复制引用
张敏,时连强,郭俊丽,原峰,唐玲..浙江省沿海砾石滩地形地貌特征与发育模式[J].海洋地质与第四纪地质,2025,45(2):55-67,13.基金项目
浙江省自然科学基金联合基金重点项目"浙江砂质海岸与淤泥质海岸生态修复关键技术研究"(LHZ22D060001) （LHZ22D060001）
国家重点研发计划项目"典型海岸侵蚀防护与活力海岸构建关键技术"(2022YFC3106201) （2022YFC3106201）
中央级公益性科研院所基本科研业务费专项资金项目"岬湾海滩砂泥分界线迁移动力机制研究——以舟山东沙海滩为例"(JG2315) （JG2315）
中央级公益性科研院所基本科研业务费专项资金项目"多时间尺度浙江典型岬湾海滩动力地貌演变及控制机制"(XRJH2309) （XRJH2309）
