| 冲绳海槽现代沉积物磁学性质分布特征与环境的关系 |
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| 引用本文： | 李萍,李培英,徐兴永,刘乐军,曹成效.冲绳海槽现代沉积物磁学性质分布特征与环境的关系[J].沉积学报,2007,25(5):753-758. |
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| 作者姓名： | 李萍 李培英 徐兴永 刘乐军 曹成效 |
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| 作者单位： | 国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室,山东青岛,266061;国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室,山东青岛,266061;国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室,山东青岛,266061;国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室,山东青岛,266061;国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室,山东青岛,266061 |
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| 基金项目： | 国家自然科学基金项目(批准号:40076019)资助 |
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| 摘 要： | 选取东海陆架至冲绳海槽槽底平原的110个表层沉积样品，通过磁化率、等温剩磁、非磁滞剩磁和饱和等温剩磁等多种磁学参数测量试验手段，分析探讨了沉积物磁性与物质来源及环境的内在联系，指出不同沉积环境中，各磁性参数表现出不同的磁性特征。冲绳海槽东槽底平原沉积物因含有较多的火山物质，磁学特征与其它沉积环境有明显差异，各磁性参数特征值明显较强。CaCO3含量与磁性参数没有明显的相关性，但在高含量区可能对沉积物磁性矿物的含量具有稀释作用，使沉积物表现出相对减弱的磁性特征。
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| 关 键 词： | 冲绳海槽 磁学参数 物源 沉积环境 |
| 文章编号： | 1000-0550（2007）05-0753-06 |
| 收稿时间： | 2006-12-19 |
| 修稿时间： | 2007-05-30 |
Distribution Characteristics of Magnetic Parameters of the Surface Sediments in the Okinawa Trough and Their Relationships to Sedimentary Environment |
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| LI Ping,LI Pei-ying,XU Xing-yong,LIU Le-jun,CAO Cheng-xiao.Distribution Characteristics of Magnetic Parameters of the Surface Sediments in the Okinawa Trough and Their Relationships to Sedimentary Environment[J].Acta Sedimentologica Sinica,2007,25(5):753-758. |
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| Authors: | LI Ping LI Pei-ying XU Xing-yong LIU Le-jun CAO Cheng-xiao |
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| Institution: | Key Lab of Marine Sediment and Environmental Geology, First Institute of Oceanography, SOA, Qingdao Shandong 266061 |
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| Abstract: | Multiple magnetic parameters measurement such as magnetic susceptibility,saturation remnant magnetization,anhysteresis remnant magnetization were made on 110 surface samples taken from the shelf of the East China Sea to abyssal plain of the Okinawa Trough.Based on the measured results,correlation in sediment magnetic characteristic and material provenance with different sedimentary environments were discussed.The sediment from individual sedimentary environments show distinguishable local environmental characteristics and are characterized by different magnetic properties.As the east abyssal plain of the Okinawa Trough contains some volcanic materials,it shows stronger magnetic characteristics than other sediment environments.There are no clearly correlation between CaCO3 and magnetic parameters,but magnetic feature tends to become weaker with the content of CaCO3 increase.Being a biologic index,CaCO3 possibly dilute the content of magnetic minerals of sediments to affect the magnetic characteristics of sediments. |
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| Keywords: | Okinawa Trough multiple magnetic parameters material provenance sedimentary environment |
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