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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

李高聪 陈洁花 仝长亮 王中铎 王华强 唐杰平 李志强 周亮

李高聪,陈洁花,仝长亮,等. 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[J]. 海洋学报,2023,45(12):67–79 doi: 10.12284/hyxb2023157
引用本文: 李高聪,陈洁花,仝长亮,等. 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[J]. 海洋学报,2023,45(12):67–79 doi: 10.12284/hyxb2023157
Li Gaocong,Chen Jiehua,Tong Changliang, et al. Comparative analysis on grain size distribution information between single sample and duplicate samples of beach sediment,southern Leizhou Peninsula[J]. Haiyang Xuebao,2023, 45(12):67–79 doi: 10.12284/hyxb2023157
Citation: Li Gaocong,Chen Jiehua,Tong Changliang, et al. Comparative analysis on grain size distribution information between single sample and duplicate samples of beach sediment,southern Leizhou Peninsula[J]. Haiyang Xuebao,2023, 45(12):67–79 doi: 10.12284/hyxb2023157

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

doi: 10.12284/hyxb2023157
基金项目: 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)。
详细信息
    作者简介:

    李高聪(1987—),男,广东省梅州市人,博士,主要从事河口海岸环境演变研究。E-mail:gcli@gdou.edu.cn

    通讯作者:

    仝长亮(1981—),男,正高级工程师,主要从事海洋地质资源和环境研究工作。E-mail: tongchangliang@163.com

    周亮(1985—),男,副教授,主要从事河口海岸环境演变研究。E-mail: geolzhou@jsnu.edu.cn

  • 中图分类号: P736.21

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

  • 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(R2 ≤ 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。
  • 图  1  采样断面分布

    Fig.  1  Location of the sampling sites

    图  2  不同断面沉积物众数(a、b和c)和中值粒径(d、e和f)的特征值

    Fig.  2  Characteristics values of the mode (a, b and c) and median size (d, e and f) of different profiles sediment

    图  3  不同断面沉积物的粒级组分含量:P1(a、d和g),P2(b、e和h)和P3(c、f和i)

    Fig.  3  Sediment grain size fraction content of different profiles: P1 (a, d and g),P2 (b, e and h) and P3 (c, f and i)

    图  4  粒度参数的数值结果及其线性拟合方程:平均粒径(a、b和c);分选系数(d、e和f);偏态(g、h和i);峰态(j、k和l)

    Fig.  4  Regression equations and numerical values for the grain size parameters: mean size (a, b and c); sorting coefficient (d, e and f); skewness (g, h and i); and kurtosis (j, k and l)

    图  5  粒度参数的定性描述术语划分结果:平均粒径(a、b和c);分选系数(d、e和f);偏态(g、h和i);峰态(j、k和l)

    Fig.  5  Physical descriptive terms of grain size parameters: mean size (a, b and c); sorting coefficient (d, e and f); skewness (g, h and i); and kurtosis (j, k and l)

    图  6  不同采样断面平行样的粒径概率分布曲线

    Fig.  6  Grain size distribution curves of the duplicate samples of different sampling profiles

    图  7  单一样相对于平行样粒度参数数值的相对误差

    Fig.  7  Relative errors between the grain size parameters of single sample and duplicate samples

    图  8  单一样和平行样粒度参数定性描述术语的结果对比:分选系数(a,b和c);偏态(d,e和f);峰态(g,h和i)

    Fig.  8  Physical descriptive terms of grain size parameters between single sample and duplicate samples: sorting coefficient (a, b and c); skewness (d, e and f); and kurtosis (g, h and i)

    表  1  粒度参数的计算公式[5, 9]

    Tab.  1  Equations of grain size parameters[5, 9]

    粒度参数 公式
    平均粒径($\varPhi $) $ \dfrac{\sum\limits _{i}^{n}{X}_{i}{f}_{i}}{100} $
    分选系数 $ {\left[\dfrac{\sum\limits _{i}^{n}{{f}_{i}({X}_{i}-\overline{X})}^{2}}{100}\right]}^{1/2} $
    偏态 $ \dfrac{\sum\limits _{i}^{n}{({X}_{i}-\overline{X})}^{3}{f}_{i}}{100{\sigma }^{3}} $
    峰态 $ \dfrac{\sum\limits _{i}^{n}{({X}_{i}-\overline{X})}^{4}{f}_{i}}{100{\sigma }^{4}} $
      注: Xi为粒级组的中值($\varPhi $),fi为各粒级范围的百分比含量,$ \sigma $为分选系数的结果。
    下载: 导出CSV

    表  2  粒度参数的定性描述术语及其数值范围[5, 9]

    Tab.  2  Physical descriptive terms and their ranges applied to numerical values for grain size parameters[5, 9]

    粒度参数 定性描述术语 数值范围
    分选 分选极好 < 0.35
    分选好 0.35~0.50
    分选较好 0.50~0.70
    分选中等 0.70~1.00
    分选较差 1.00~2.00
    分选差 2.00~4.00
    分选极差 > 4.00
    偏态 极负偏 < –1.30
    负偏 –1.30~–0.43
    近对称 –0.43~0.43
    正偏 0.43~1.30
    极正偏 > 1.30
    峰态 很平坦 < 1.70
    平坦 1.70~2.55
    中等 2.55~3.70
    尖锐 3.70~7.40
    很尖锐 > 7.40
    下载: 导出CSV

    表  3  粒度参数数值结果特征值统计表

    Tab.  3  Characteristic values of grainsize parameters for the numerical values

    粒度参数 采样断面编号 平行样 最小值 最大值 平均值 标准偏差
    平均粒径($\varPhi $) P1 i 2.54 2.84 2.76 0.08
    ii 2.74 2.83 2.79 0.03
    iii 2.69 2.89 2.78 0.05
    P2 i 2.79 3.01 2.87 0.05
    ii 2.79 2.98 2.88 0.05
    iii 2.78 3.12 2.88 0.09
    P3 i 2.57 2.89 2.75 0.08
    ii 2.60 2.97 2.87 0.10
    iii 2.83 2.94 2.89 0.03
    分选系数 P1 i 0.22 0.34 0.27 0.04
    ii 0.20 0.32 0.28 0.04
    iii 0.19 0.31 0.25 0.04
    P2 i 0.20 0.34 0.25 0.05
    ii 0.10 0.33 0.21 0.06
    iii 0.17 0.44 0.24 0.07
    P3 i 0.18 0.63 0.41 0.12
    ii 0.19 0.26 0.22 0.02
    iii 0.21 0.30 0.25 0.03
    偏态 P1 i –3.77 –1.98 –2.81 0.63
    ii –3.97 –1.04 –2.90 0.91
    iii –3.21 –0.41 –1.53 0.87
    P2 i –4.97 –0.32 –2.55 1.69
    ii –4.31 0.35 –1.80 1.38
    iii –5.10 0.14 –1.52 1.52
    P3 i –3.78 –0.43 –2.65 0.93
    ii –3.22 –0.35 –1.86 0.79
    iii –4.26 –1.07 –2.81 0.94
    峰态 P1 i 14.06 27.21 21.59 4.53
    ii 9.95 30.28 21.53 6.54
    iii 4.92 27.8 11.23 6.56
    P2 i 5.62 56.45 26.39 16.50
    ii 5.50 63.58 22.86 15.57
    iii 4.41 55.80 17.93 14.28
    P3 i 4.49 23.02 13.41 5.75
    ii 8.76 33.81 19.89 6.38
    iii 13.48 40.53 27.69 10.02
    下载: 导出CSV
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  • 收稿日期:  2023-04-07
  • 修回日期:  2023-08-07
  • 网络出版日期:  2023-12-19
  • 刊出日期:  2023-12-01

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