文献类型：期刊文献

英文题名：Grain size distribution characteristics of sediments in recreational beaches: a case study of three major beaches in Zhanjiang City of western Guangdong

作者：Chen, Jiehua[1,2,3];Tan, Caiyi[1];Yuan, Mingming[1];Mo, Jinling[1];Chen, Dezhi[4];Chen, Lian[2];Li, Gaocong[1,3]

机构：[1]Guangdong Ocean Univ, Coll Elect & Informat Engn, Zhanjiang 524088, Peoples R China;[2]Sericultural & Agrifood Res Inst, Guangdong Acad Agr Sci, Guangzhou 510610, Guangdong, Peoples R China;[3]Guangdong Prov Key Lab Intelligent Equipment South China, Sea Marine Ranching, Zhanjiang 524088, Peoples R China;[4]Minist Nat Resources, Key Lab Trop Marine Ecosyst & Bioresource, Beihai 536009, Guangxi, Peoples R China

年份：2025

卷号：8

期号：1

外文期刊名：ANTHROPOCENE COASTS

收录：ESCI(收录号：WOS:001513701500001)、Scopus(收录号：2-s2.0-105008803826)、WOS

基金：Special thanks to the editor and anonymous reviewers who have helped the improvement of the paper.

语种：英文

外文关键词：Surface sediments; Grain size distribution; Multi-parameter comparison; Three major recreational beaches in Zhanjiang City

外文摘要：Recreational beaches are widely distributed in coastal cities. Investigating the coupling mechanisms between anthropogenic interventions and natural coastal processes on sediment grain-size distribution is critical for maintaining and enhancing recreational beach functionality and value. This study examines three major recreational beaches within Zhanjiang Bay, conducting comparative analyses of surface sediment characteristics including representative grain-size metrics, granulometric composition, and statistical parameters. Key findings include: (a) significant variations in mode size (0.87-1.89 phi) and D10 values (-0.80 to -0.09 phi) among the three beaches, contrasted with limited differences in D50 and D90 metrics; (2) dominance of medium sand (26.16-39.14%) and coarse sand (26.75-31.43%) fractions, supplemented by fine and very coarse sand components, with central transects exhibiting higher medium-coarse sand concentrations than southern/northern sections; (3) sorting coefficient gradients (0.90-1.21) ranking central > northern > southern beaches, while mean grain size (0.83-1.21 phi), skewness (-0.12 to -0.02), and kurtosis (0.87-1.18) show no distinct spatial patterns. Sediment grain-size distribution patterns are governed by four primary mechanisms: artificial nourishment inputs, anthropogenic sediment modification (harvesting/excavation), natural sediment supply processes, and hydrodynamic forcing. This research establishes a typical framework for characterizing recreational beach sediments, advancing understanding of multi-factor controlled grain-size distribution patterns and sediment transport dynamics.