| 武汉天兴洲近代沉积物的磁性特征及其环境意义 |
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| 引用本文： | 李永涛,顾延生,曲赞.武汉天兴洲近代沉积物的磁性特征及其环境意义[J].地球科学,2011(4):779-788. |
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| 作者姓名： | 李永涛 顾延生 曲赞 |
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| 作者单位： | 中国地质大学地球物理与空间信息学院;中国地质大学(武汉)生物地质与环境地质教育部重点实验室;湿地演化与生态恢复湖北省重点实验室; |
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| 基金项目： | 国家自然科学基金项目(Nos.41072261,40872202,40771213); 中央高校基本科研业务费专项资金(No.CUG090103) |
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| 摘 要： | 利用多磁性参数(包括质量磁化率、频率磁化率、饱和等温剩磁、退磁系数以及热磁曲线)及磁组构分析,以长江中游武汉天兴洲近代河流沉积物为研究对象,探讨了近100年以来沉积物磁性参数变化特征及其对长江中上游水文变化及气候环境的指示.结果表明,上部组合带(0.60～1.50 m)和下部组合带(2.40～3.30 m)沉积物的磁性...
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| 关 键 词： | 沉积物 环境磁学 磁组构 地球物理 |
Magnetic Properties of Recent Sediments at Tianxing Centralshoal of Wuhan:Implication for Sedimentary Environment Change in the Middle Reaches of the Yangtze River |
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| LI Yong-tao,GU Yan-sheng,QU Zan.Magnetic Properties of Recent Sediments at Tianxing Centralshoal of Wuhan:Implication for Sedimentary Environment Change in the Middle Reaches of the Yangtze River[J].Earth Science-Journal of China University of Geosciences,2011(4):779-788. |
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| Authors: | LI Yong-tao GU Yan-sheng QU Zan |
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| Institution: | LI Yong-tao1,GU Yan-sheng2,3,QU Zan1 1.Institute of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China2.Key Laboratory of Geobiology and Environmental Geology(China University of Geosciences),Ministry of Education,China 3.Hubei Key Laboratory of Wetland Evolution & Ecological Restoration,China |
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| Abstract: | Multi-proxy of environmental magnetism(such as mass susceptibility,frequency dependent susceptibility,saturation isothermal,demagnetizing factor and thermalmagnetic curve) and magnetic fabric parameters derived from the recent sediments at Tianxing Centralshoal of Wuhan are employed to reconstruct the history of paleo-hydrology and climate changes in the mid-upper reaches of the Yangtze River.The assemblage zones of multi-proxy of environmental magnetism indicate that both upper(0.60-1.50 m) and lower(2.40-... |
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| Keywords: | sediments environmental magnetism magnetic fabric parameters geophysics |
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