沉积物粒径趋势分析：原理与应用条件

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沉积物粒径趋势分析：原理与应用条件

高抒

文章导航 > 沉积学报 > 2009 > 27(5): 826-836

高抒. 沉积物粒径趋势分析：原理与应用条件[J]. 沉积学报, 2009, 27(5): 826-836.

引用本文:

高抒. 沉积物粒径趋势分析：原理与应用条件[J]. 沉积学报, 2009, 27(5): 826-836.

GAO Shu. Grain Size Trend Analysis: Principle and Applicability[J]. Acta Sedimentologica Sinica, 2009, 27(5): 826-836.

Citation:

GAO Shu. Grain Size Trend Analysis: Principle and Applicability[J]. Acta Sedimentologica Sinica, 2009, 27(5): 826-836.

高抒. 沉积物粒径趋势分析：原理与应用条件[J]. 沉积学报, 2009, 27(5): 826-836.

引用本文:

高抒. 沉积物粒径趋势分析：原理与应用条件[J]. 沉积学报, 2009, 27(5): 826-836.

GAO Shu. Grain Size Trend Analysis: Principle and Applicability[J]. Acta Sedimentologica Sinica, 2009, 27(5): 826-836.

Citation:

GAO Shu. Grain Size Trend Analysis: Principle and Applicability[J]. Acta Sedimentologica Sinica, 2009, 27(5): 826-836.

沉积物粒径趋势分析：原理与应用条件

高抒

南京大学地理与海洋科学学院海岸与海岛开发教育部重点实验室南京210093

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Grain Size Trend Analysis: Principle and Applicability

GAO Shu

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093

More Information

Corresponding author: GAO Shu

摘要

摘要: 长期以来，沉积学家尝试用粒度数据来识别沉积环境的类型或判定物质运动的方式，但只取得了部分成功。粒度参数还有一项可能的用途，即用其平面差异来获取物质输运信息。沉积学家将粒度参数的平面差异定义为“粒径趋势”，并建立了以“粒径趋势分析”为基础的定性物质输运模型。粒径趋势分析的基本科学问题包括：如何提取粒径趋势信息；如何确定含有物质输运信息的粒径趋势类型；粒径趋势分析的应用条件是什么。粒径趋势信息可通过粒径趋势矢量的定义及其各向异性显著性的检验而获得，而经验证据也显示，含有物质输运信息的粒径趋势类型是存在的。初步研究表明，粒径趋势分析应满足以下条件：粒径趋势矢量具有显著性；底质采样深度应代表同一时间尺度；平面采样间距应符合地统计法的规则；避免使用位于采样网格边缘上的采样点的粒径趋势矢量；沉积物样品应属于同一个输运体系或研究区处于堆积状态。但是，由于不同来源的物质混合、源区沉积物特征及变化、不同水动力条件下的物质输运、悬沙沉降、溶解态—颗粒态物质转换、物质输运动力的侧向分布等因素与粒径趋势形成之间的关系还不够明确，因此这些条件还不是完备的，这个问题的解决依赖于粒径趋势形成的过程和机制的进一步研究。
- 沉积物输运粒度参数粒径趋势分析数值模拟海洋环境
Abstract: For a long time sedimentlogists have used grain size parameters as a critierion to determine the type of sedimentary environments or to identify the mode of transport before accumulation. However, such efforts have been only partly successful. Another possible ussage of grain size data is to delineate sediment transport pathways on the basis of the spatial distribution paterns of grain size parameters, which is defined as “grain size trends”. Based upon analysis of grain size trends, qualitative models for sediment transport have been established. The basic scientific problems for grain size trend analysis include: the procedure to subtract the information on transport; the method to determine which types of the trends contain transport information; and the conditions under which the method can be applied. For the first two questions, it has been proposed that the patterns of the trends can be obtained by defining the “trend vector” and identifying its spatial anisotropy (the significance of which can be tested using statistical methods), and empirical evidence has shown the existence of the trend types that contain transport information. With regard to the third question, preliminary studies indicate that the following conditions should be satisfied for the application of grain size trend analysis: (1) the spatial anisotropy of the trend vectors is statistically significant; (2) the sampling depth matches the temporal scale of the transport phenomenon; (3) the sampling interval is in agreement with the geostatistical principle; (4) the edge effect is eliminated; and (5) the samples are from the same transport system or the sedimentary environment is in an accretional status. However, these conditions are still incomplete, because of the uncertainties from the effects of material mixing, the characteristics and their changes of sediment in source areas, transport in different hydrodynamic settings, settling processes of suspended sediment, transformation between dissolvedparticulate materials and lateral distribution patterns of sediment movement. A thorough solution to the problem depends upon future progress in the study of the processes and mechanisms for the formation of grain size trends
- sediment transport

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[1]	李恬恬, 胡光明. 浅水三角洲沉积物理模拟与数值模拟的对比研究【水槽沉积模拟实验专辑】 . 沉积学报, 2024, (): -. doi: 10.14027/j.issn.1000-0550.2024.086
[2]	曹运诚, 周海玲, 郑子涵, 陈多福. 海洋天然气水合物发育顶界模拟——沉积物毛细管作用影响 . 沉积学报, 2024, 42(4): 1229-1238. doi: 10.14027/j.issn.1000-0550.2022.108
[3]	彭雲, 于谦, 万洁颖, 杜智运, 王黎, 王韫玮, 高抒. 江苏海岸中部近岸沉积物重力流输运过程 . 沉积学报, 2023, 41(6): 1755-1767. doi: 10.14027/j.issn.1000-0550.2023.091
[4]	卢斌, 邱振, 周川闽, 董大忠, 梁萍萍. 泥页岩沉积物理模拟研究进展与发展趋势 . 沉积学报, 2021, 39(4): 781-793. doi: 10.14027/j.issn.1000-0550.2021.016
[5]	李富强, 高红山, 张连科, 李宗盟, 庞红丽, 潘保田. 基于粒度参数特征对黄河后套平原段岩芯沉积环境的分析 . 沉积学报, 2019, 37(6): 1234-1243. doi: 10.14027/j.issn.1000-0550.2019.004
[6]	李东义, 徐勇航, 王爱军, 郑斌鑫, 李国刚. 福建安海湾表层沉积物粒度特征及其现代沉积过程分析 . 沉积学报, 2015, 33(4): 724-734. doi: 10.14027/j.cnki.cjxb.2015.04.011
[7]	陈立雷, 张媛媛, 贺行良, 张培玉, 朱志刚, 李小琳. 海洋沉积物有机碳和稳定氮同位素分析的前处理影响 . 沉积学报, 2014, 32(6): 1046-1051.
[8]	. 汕头近岸海域表层沉积物粒度特征及其输运趋势 . 沉积学报, 2014, 32(2): 314-324.
[9]	. 乌梁素海湖泊沉积物粒度特征及其环境指示意义 . 沉积学报, 2013, 31(04): 646-652.
[10]	李小艳. 南海北部晚更新世以来的古海洋环境演化特征①——来自N31柱样的沉积记录 . 沉积学报, 2011, 29(3): 572-579.
[11]	王小雷. 云南抚仙湖近现代环境变化的沉积物粒度记录 . 沉积学报, 2010, 28(4): 776-782.
[12]	闵凤阳. 深圳湾西北部海域表层沉积物的分布特征及输运趋势 . 沉积学报, 2009, 27(4): 714-722.
[13]	谢昕. 古环境研究中深海沉积物粒度测试的预处理方法 . 沉积学报, 2007, 25(5): 684-692.
[14]	汪勇. 陕北红碱淖沉积物粒度特征所揭示的环境变化 . 沉积学报, 2006, 24(3): 349-355.
[15]	蒋庆丰刘兴起沈吉. 乌伦古湖沉积物粒度特征及其古气候环境意义 . 沉积学报, 2006, 24(06): 877-882.
[16]	王爱军, 汪亚平, 杨旸. 江苏王港潮间带表层沉积物特征及输运趋势 . 沉积学报, 2004, 22(1): 124-129.
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[18]	朱晓东, 施丙文, 朱大奎. 一种适用于微体古生物沉积动力分析的沉积物粒径指数及其应用例证 . 沉积学报, 1997, 15(3): 145-149.
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文章访问数: 2690
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沉积物粒径趋势分析：原理与应用条件

高抒

南京大学地理与海洋科学学院海岸与海岛开发教育部重点实验室南京210093

通讯作者: 高抒

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2009-10-10

关键词:

沉积物输运粒度参数粒径趋势分析数值模拟海洋环境

摘要: 长期以来，沉积学家尝试用粒度数据来识别沉积环境的类型或判定物质运动的方式，但只取得了部分成功。粒度参数还有一项可能的用途，即用其平面差异来获取物质输运信息。沉积学家将粒度参数的平面差异定义为“粒径趋势”，并建立了以“粒径趋势分析”为基础的定性物质输运模型。粒径趋势分析的基本科学问题包括：如何提取粒径趋势信息；如何确定含有物质输运信息的粒径趋势类型；粒径趋势分析的应用条件是什么。粒径趋势信息可通过粒径趋势矢量的定义及其各向异性显著性的检验而获得，而经验证据也显示，含有物质输运信息的粒径趋势类型是存在的。初步研究表明，粒径趋势分析应满足以下条件：粒径趋势矢量具有显著性；底质采样深度应代表同一时间尺度；平面采样间距应符合地统计法的规则；避免使用位于采样网格边缘上的采样点的粒径趋势矢量；沉积物样品应属于同一个输运体系或研究区处于堆积状态。但是，由于不同来源的物质混合、源区沉积物特征及变化、不同水动力条件下的物质输运、悬沙沉降、溶解态—颗粒态物质转换、物质输运动力的侧向分布等因素与粒径趋势形成之间的关系还不够明确，因此这些条件还不是完备的，这个问题的解决依赖于粒径趋势形成的过程和机制的进一步研究。

English Abstract

Grain Size Trend Analysis: Principle and Applicability

GAO Shu

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093

Corresponding author: GAO Shu

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2009-10-10

Keywords:

sediment transport

Abstract: For a long time sedimentlogists have used grain size parameters as a critierion to determine the type of sedimentary environments or to identify the mode of transport before accumulation. However, such efforts have been only partly successful. Another possible ussage of grain size data is to delineate sediment transport pathways on the basis of the spatial distribution paterns of grain size parameters, which is defined as “grain size trends”. Based upon analysis of grain size trends, qualitative models for sediment transport have been established. The basic scientific problems for grain size trend analysis include: the procedure to subtract the information on transport; the method to determine which types of the trends contain transport information; and the conditions under which the method can be applied. For the first two questions, it has been proposed that the patterns of the trends can be obtained by defining the “trend vector” and identifying its spatial anisotropy (the significance of which can be tested using statistical methods), and empirical evidence has shown the existence of the trend types that contain transport information. With regard to the third question, preliminary studies indicate that the following conditions should be satisfied for the application of grain size trend analysis: (1) the spatial anisotropy of the trend vectors is statistically significant; (2) the sampling depth matches the temporal scale of the transport phenomenon; (3) the sampling interval is in agreement with the geostatistical principle; (4) the edge effect is eliminated; and (5) the samples are from the same transport system or the sedimentary environment is in an accretional status. However, these conditions are still incomplete, because of the uncertainties from the effects of material mixing, the characteristics and their changes of sediment in source areas, transport in different hydrodynamic settings, settling processes of suspended sediment, transformation between dissolvedparticulate materials and lateral distribution patterns of sediment movement. A thorough solution to the problem depends upon future progress in the study of the processes and mechanisms for the formation of grain size trends

高抒. 沉积物粒径趋势分析：原理与应用条件[J]. 沉积学报, 2009, 27(5): 826-836.

引用本文:

高抒. 沉积物粒径趋势分析：原理与应用条件[J]. 沉积学报, 2009, 27(5): 826-836.

GAO Shu. Grain Size Trend Analysis: Principle and Applicability[J]. Acta Sedimentologica Sinica, 2009, 27(5): 826-836.

Citation:

GAO Shu. Grain Size Trend Analysis: Principle and Applicability[J]. Acta Sedimentologica Sinica, 2009, 27(5): 826-836.

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沉积物粒径趋势分析：原理与应用条件

通讯作者:
高抒

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Grain Size Trend Analysis: Principle and Applicability

Corresponding author: GAO Shu

计量

目录

沉积物粒径趋势分析：原理与应用条件

南京大学地理与海洋科学学院海岸与海岛开发教育部重点实验室南京210093

通讯作者: 高抒

English Abstract

Grain Size Trend Analysis: Principle and Applicability

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093

Corresponding author: GAO Shu

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沉积物粒径趋势分析：原理与应用条件

通讯作者: 高抒

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Grain Size Trend Analysis: Principle and Applicability

Corresponding author: GAO Shu

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出版历程

目录

沉积物粒径趋势分析：原理与应用条件

南京大学地理与海洋科学学院海岸与海岛开发教育部重点实验室南京210093

通讯作者: 高抒

English Abstract

Grain Size Trend Analysis: Principle and Applicability

School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093

Corresponding author: GAO Shu

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