海洋地质前沿2026，Vol.42Issue(1)：72-86,15.DOI:10.16028/j.1009-2722.2025.032
江苏盐城近海表层沉积物侵蚀特征及影响因素
Erosion and its influencing factors of surface sediments nearshore of Yancheng,Jiangsu
摘要
Abstract
The coast of Yancheng,Jiangsu is one of the largest silty muddy coasts in China and has been in an erosional state in recent years.The sediment erosion are one of the important factors affecting coastal erosion,for which this systematic research was carried out yet.The micro-erosion system(U-GEMS)was used in our field ex-periment on the undisturbed sediments in the intertidal and subtidal zones in 2023,and the influencing factors were discussed.Results show that the critical erosion shear stress of intertidal sediments was between 0.2 and 0.6 N/m2,and the erosion rate under a shear stress of 0.6 N/m2 was between 0.053 and 0.263 g·m-2·s-1.The critical erosion shear stress of subtidal sediments was between 0.3 and 0.69 N/m2,and the erosion rate under a shear stress of 0.6 N/m2 was between 0.051 and 0.078 g·m-2·s-1.Clay content was the main controlling factor of sediment erodibility and erosion pattern.Moisture content and dry bulk density had a significant impact on the erosion char-acteristics of cohesive sediments,but had little impact on the erosion of non-cohesive sediments.Affected by factors such as sedimentary environment and hydrodynamic characteristics,the erodibility of the intertidal zone in the study area was significantly higher than that of the subtidal zone.The research results are helpful to enrich the theoretical research into nearshore erosion and deposition evolution,and provide guidance for coastal erosion pro-tection and the sustainable development of the coastal zone.关键词
表层沉积物/侵蚀特征/微观侵蚀实验/影响因素Key words
surface sediments/erosion characteristics/micro-erosion experiment/influencing factors分类
海洋科学引用本文复制引用
王翼龙,曹阳,朱龙海,聂顺义,胡日军,张晓东,林超然..江苏盐城近海表层沉积物侵蚀特征及影响因素[J].海洋地质前沿,2026,42(1):72-86,15.基金项目
江苏省财政项目"盐城市大丰区典型黄海湿地生态地质资源环境调查评价与利用"(苏财资环[2022]19号) （苏财资环[2022]19号）
国家自然科学基金(42276172) （42276172）
