珠江口沉积物210Pb分布特征及环境意义

刘志勇

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珠江口沉积物210Pb分布特征及环境意义

刘志勇

文章导航 > 沉积学报 > 2010 > 28(1): 166-175

刘志勇. 珠江口沉积物210Pb分布特征及环境意义[J]. 沉积学报, 2010, 28(1): 166-175.

引用本文:

刘志勇. 珠江口沉积物210Pb分布特征及环境意义[J]. 沉积学报, 2010, 28(1): 166-175.

LIU Zhiyong. 210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication[J]. Acta Sedimentologica Sinica, 2010, 28(1): 166-175.

Citation:

LIU Zhiyong. 210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication[J]. Acta Sedimentologica Sinica, 2010, 28(1): 166-175.

刘志勇. 珠江口沉积物210Pb分布特征及环境意义[J]. 沉积学报, 2010, 28(1): 166-175.

引用本文:

刘志勇. 珠江口沉积物210Pb分布特征及环境意义[J]. 沉积学报, 2010, 28(1): 166-175.

LIU Zhiyong. 210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication[J]. Acta Sedimentologica Sinica, 2010, 28(1): 166-175.

Citation:

LIU Zhiyong. 210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication[J]. Acta Sedimentologica Sinica, 2010, 28(1): 166-175.

珠江口沉积物210Pb分布特征及环境意义

刘志勇

南京大学海岸与海岛开发教育部重点实验室南京210093

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通讯作者:
刘志勇

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文章访问数: 2417
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210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication

LIU Zhiyong

Key Laboratory of Coastal and Island Development Ministry of Education, Nanjing University, Nanjing 210093

More Information

Corresponding author: LIU Zhiyong

摘要

摘要: 根据珠江口及其邻近海域中的14个沉积柱样的210Pb随深度分布的测量数据以及210Pb过剩衰减法的原理，建立了基于傅立叶级数的变沉积速率模型，对珠江河口近50年来河口沉积物的沉积序列进行了分析。分别对各柱样的210Pb数据使用变沉积速率模型进行计算，获得了柱样更切实的沉积速率变化过程并分析沉积速率、年代计算结果与同时期内沉积环境之间的关系，结果表明：珠江口不同站位的沉积速率差异很大，几个站位的整体平均沉积速率分别是，7.25 cm/a，5.36 cm/a，3.26 cm/a，3.03 cm/a，1.58 cm/a；沉积速率的变化与同时期发生在区域内的洪水、风暴潮、人类活动、河口演变等一系列综合因素有较好的对应关系，这说明使用基于傅立叶级数的变沉积速率模型得到的210Pb沉积速率变化的垂直分布能够解释其对应时段内的沉积环境，此模型亦可为其它河口区域的210Pb沉积速率计算提供借鉴。
- 沉积速率同位素测年傅立叶级数的变沉积速率模型 210Pb珠江口
Abstract: Based on the principle of lead 210 excess decaying and the characteristics of modern lead 210 sediment profiles of 14 sediment cores from the Pearl River mouth and its adjacent areas, a Fourier series based model for counting variation sediment rates was built. Sediment series was analyzed at the Pearl River mouth within 50 sediment years. The lead 210 of each sediment cores was calculated in the model for counting variation sedimentation rates and gained more specific data of the sedimentation process. Sedimentation rates, dating results and those relations between the sedimentary environmental at the same time were analyzed. The result shows that sedimentation rates are distinct from each other greatly at different stations. The average sediment rates of the stations were 7.25cm/a,5.36cm/a,3.26cm/a,3.03cm/a,1.58cm/a, respectively. The sedimentation rates variation at different stations has good correlation with the flooding, storms, anthropological activities, geomorphologic evolvement and other environmental elements at the estuary within the same periods. It verified that the characteristic of lead 210 of the sediment profiles calculated from the Fourier series based model for counting variation sediment rates can explain the environmental statues/changes at the same time. The model also made experiences for other estuaries which would analyses the sediment rates from the characteristic of lead 210 of the sediment cores.
- sedimentation rates

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[1]	廖东霞, 郭海婷, 吴孟孟, 潘少明. ¹³⁷Cs测年的东北兴凯湖现代沉积速率研究 . 沉积学报, 2022, 40(6): 1718-1727. doi: 10.14027/j.issn.1000-0550.2021.055
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[3]	宗娴, 石学法, 葛晨东, 邹建军, Sergey Gorbarenko, 乔淑卿, 董智. 日本海百年来沉积速率及粒度指示意义 . 沉积学报, 2016, 34(3): 516-522. doi: 10.14027/j.cnki.cjxb.2016.03.009
[4]	王永凤, 李冬, 王英民, 徐强. 珠江口盆地重要不整合界面与珠江沉积体系演化分析 . 沉积学报, 2015, 33(3): 587-594. doi: 10.14027/j.cnki.cjxb.2015.03.017
[5]	李成海, 王家豪, 柳保军, 苏奥, 徐东浩, 罗泉源, 刘姗, 牟川. 珠江口盆地白云凹陷古近系沉积相类型 . 沉积学报, 2014, 32(6): 1162-1170.
[6]	韦惺. 珠江三角洲地区全新世以来的沉积速率与沉积环境分析 . 沉积学报, 2011, 29(2): 328-335.
[7]	李云. 珠江口盆地荔湾31气田珠江组深水扇沉积相分析 . 沉积学报, 2011, 29(4): 665-676.
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珠江口沉积物210Pb分布特征及环境意义

刘志勇

南京大学海岸与海岛开发教育部重点实验室南京210093

通讯作者: 刘志勇

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2010-02-10

关键词:

沉积速率同位素测年傅立叶级数的变沉积速率模型 210Pb珠江口

摘要: 根据珠江口及其邻近海域中的14个沉积柱样的210Pb随深度分布的测量数据以及210Pb过剩衰减法的原理，建立了基于傅立叶级数的变沉积速率模型，对珠江河口近50年来河口沉积物的沉积序列进行了分析。分别对各柱样的210Pb数据使用变沉积速率模型进行计算，获得了柱样更切实的沉积速率变化过程并分析沉积速率、年代计算结果与同时期内沉积环境之间的关系，结果表明：珠江口不同站位的沉积速率差异很大，几个站位的整体平均沉积速率分别是，7.25 cm/a，5.36 cm/a，3.26 cm/a，3.03 cm/a，1.58 cm/a；沉积速率的变化与同时期发生在区域内的洪水、风暴潮、人类活动、河口演变等一系列综合因素有较好的对应关系，这说明使用基于傅立叶级数的变沉积速率模型得到的210Pb沉积速率变化的垂直分布能够解释其对应时段内的沉积环境，此模型亦可为其它河口区域的210Pb沉积速率计算提供借鉴。

English Abstract

210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication

LIU Zhiyong

Key Laboratory of Coastal and Island Development Ministry of Education, Nanjing University, Nanjing 210093

Corresponding author: LIU Zhiyong

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2010-02-10

Keywords:

sedimentation rates

Abstract: Based on the principle of lead 210 excess decaying and the characteristics of modern lead 210 sediment profiles of 14 sediment cores from the Pearl River mouth and its adjacent areas, a Fourier series based model for counting variation sediment rates was built. Sediment series was analyzed at the Pearl River mouth within 50 sediment years. The lead 210 of each sediment cores was calculated in the model for counting variation sedimentation rates and gained more specific data of the sedimentation process. Sedimentation rates, dating results and those relations between the sedimentary environmental at the same time were analyzed. The result shows that sedimentation rates are distinct from each other greatly at different stations. The average sediment rates of the stations were 7.25cm/a,5.36cm/a,3.26cm/a,3.03cm/a,1.58cm/a, respectively. The sedimentation rates variation at different stations has good correlation with the flooding, storms, anthropological activities, geomorphologic evolvement and other environmental elements at the estuary within the same periods. It verified that the characteristic of lead 210 of the sediment profiles calculated from the Fourier series based model for counting variation sediment rates can explain the environmental statues/changes at the same time. The model also made experiences for other estuaries which would analyses the sediment rates from the characteristic of lead 210 of the sediment cores.

刘志勇. 珠江口沉积物210Pb分布特征及环境意义[J]. 沉积学报, 2010, 28(1): 166-175.

引用本文:

刘志勇. 珠江口沉积物210Pb分布特征及环境意义[J]. 沉积学报, 2010, 28(1): 166-175.

LIU Zhiyong. 210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication[J]. Acta Sedimentologica Sinica, 2010, 28(1): 166-175.

Citation:

LIU Zhiyong. 210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication[J]. Acta Sedimentologica Sinica, 2010, 28(1): 166-175.

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珠江口沉积物210Pb分布特征及环境意义

通讯作者:
刘志勇

计量

210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication

Corresponding author: LIU Zhiyong

计量

目录

珠江口沉积物210Pb分布特征及环境意义

南京大学海岸与海岛开发教育部重点实验室南京210093

通讯作者: 刘志勇

English Abstract

210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication

Key Laboratory of Coastal and Island Development Ministry of Education, Nanjing University, Nanjing 210093

Corresponding author: LIU Zhiyong

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珠江口沉积物210Pb分布特征及环境意义

通讯作者: 刘志勇

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210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication

Corresponding author: LIU Zhiyong

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出版历程

目录

珠江口沉积物210Pb分布特征及环境意义

南京大学海岸与海岛开发教育部重点实验室南京210093

通讯作者: 刘志勇

English Abstract

210Pb Characteristic in the Sediment Cores from the Pearl River Mouth and Its Environmental Implication

Key Laboratory of Coastal and Island Development Ministry of Education, Nanjing University, Nanjing 210093

Corresponding author: LIU Zhiyong

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刘志勇