雷州半岛南部海滩沉积物单一样和平行样粒度分布信息的对比  

Comparative analysis on grain size distribution information between single sample and duplicate samples of beach sediment,southern Leizhou Peninsula

作　　者：李高聪 陈洁花 仝长亮 王中铎[4] 王华强 唐杰平 李志强 周亮 Li Gaocong;Chen Jiehua;Tong Changliang;Wang Zhongduo;Wang Huaqiang;Tang Jieping;Li Zhiqiang;Zhou Liang(College of Electronic and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,China;Laboratory of Marine Geology Resources and Environment of Hainan Province,Haikou 570206,China;Hainan Geology Detection and Research Centre of Hainan Province,Haikou 570206,China;College of Fisheries,Guangdong Ocean University,Zhanjiang 524088,China;The Guangzhou Hydrographic Center of the Navigation Guarantee Center for South China Sea,Ministry of Transport,Guangzhou 510320,China;School of Geography,Geomatics and Planning,Jiangsu Normal University,Xuzhou 221116,China)

机构地区：[1]广东海洋大学电子与信息工程学院,广东湛江524088 [2]海南省海洋地质资源与环境重点实验室,海南海口570206 [3]海南省地质测试研究中心,海南海口570206 [4]广东海洋大学水产学院,广东湛江524088 [5]交通运输部南海航海保障中心广州海事测绘中心,广东广州510320 [6]江苏师范大学地理测绘与城乡规划学院,江苏徐州221116

出　　处：《海洋学报》2023年第12期67-79,共13页

基　　金：国家自然科学基金项目(42176167);广东省科技厅科技基础条件建设项目(2021B1212110005);广东省基础与应用基础研究基金项目(2023A1515012041);海南省海洋地质资源与环境重点实验室开放课题重点课题项目(HNHYDZZYHJKF015);2022年海南省自然科学基金项目(422RC800);广东海洋大学科研启动经费项目(060302112010)。

摘　　要：前人已开展了大量的关于沉积物粒度测试、数据分析与信息提取工作,但针对所采集的沉积物样品是否具有代表性的研究仍较为罕见。基于众数、中值粒径、粒级组分含量、沉积物类型和粒度参数等指标,本文对比分析了雷州半岛南部海滩30组沉积物平行样的粒度分布参数的定量和定性结果的异同、相关性和一致性。研究结果表明:(1)平行样的众数、中值粒径和粒级组分含量均表现出一定程度的差异性;(2)平行样的偏态和峰态特征值差异较为明显,P1平均值分别为–2.90-–1.53和11.23-21.59,P2为–2.55-–1.52和11.23-21.59,P3为–2.81-–1.86和13.41-27.69;(3)粒度参数的数值结果有约2/3的组合呈不相关关系(R^(2)≤0.29);(4)分选系数、偏态和峰态分别有1/3、1/2和4/15的定性结果存在差异。沉积物粒度分布信息的空间异质性和样品采集的随机性是上述差异的主要原因。为了尽可能消除样品采集的随机性和刻画粒度分布信息的时空异质性,建议未来样品采集时同时采集平行样。本文提供了一个以海滩沉积物为研究对象的平行样粒度参数结果对比的典型案例,结果有助于提升对沉积物样品有效采集策略方面的认识。Previous research has conducted extensive work on sediment grain size testing,data analysis,and information extraction.However,studies on whether the collected sediment samples are representative are still relatively rare.Based on indicators such as the mode,median grain size,particle size distribution,sediment type,and grain size parameters,this study compared and analyzed the quantitative and qualitative results of the grain size distribution parameters of 30 parallel sediment samples collected from beaches in the southern part of Leizhou Peninsula,China.The study examined the differences,correlations,and consistencies of these parameters.The results showed that:(1)the mode,median grain size,and particle size distribution of parallel samples exhibited a certain degree of variability;(2)the skewness and kurtosis of parallel samples showed significant differences,with average values of P1 ranging from–2.90 to–1.53 and 11.23 to 21.59,P2 ranging from–2.55 to–1.52 and 11.23 to 21.59,and P3 ranging from–2.81 to–1.86 and 13.41 to 27.69;(3)about two-thirds of the combinations of grain size parameters had no correlation(R^(2)≤0.29);(4)qualitative results of sorting coefficients,skewness,and kurtosis showed differences in 1/3,1/2,and 4/15 of the cases,respectively.The spatial heterogeneity of sediment grain size distribution information and the randomness of sample collection are the main reasons for these differences.To minimize the randomness of sample collection and characterize the spatiotemporal heterogeneity of grain size distribution information,parallel samples are recommended for future sample collection.This study provides a typical case of comparing the results of parallel sample grain size parameters for beach sediment,which can improve our understanding of effective sediment sample collection strategies.

关 键 词：粒度参数 沉积物平行样 矩值法 定量和定性对比 雷州半岛南部海滩 

分 类 号：P736.21[天文地球—海洋地质]