地球科学进展 ›› 2010, Vol. 25 ›› Issue (9): 927 -933. doi: 10.11867/j.issn.1001-8166.2010.09.0927

综述与评述 上一篇    下一篇

黄土中宇宙成因核素 10Be示踪古地磁场变化研究进展
赵国庆 1,2,3,周卫健 1,2,4*,武振坤 1,2,鲜锋 1,2,孔祥辉 1,2,3,张丽 1,2,3   
  1. 1中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,陕西西安 710075;2.西安加速器质谱中心,陕西西安 710061;
    3.中国科学院研究生院,北京 100049;4.西安交通大学,陕西西安 710049
  • 收稿日期:2010-03-03 修回日期:2010-07-26 出版日期:2010-09-10
  • 通讯作者: 周卫健(1953-),女,河南南乐人,研究员,中国科学院院士,主要从事宇宙成因核素在地理环境学中的应用研究. E-mail:weijian@loess.llqg.ac.cn
  • 基金资助:

    中国科学院知识创新工程重要方向项目“最近80万年黄土序列10Be浓度记录及古地磁示踪研究”(编号: KZCX2-YW-118)资助.

 Progress of Tracing Paleo-geomagnetic Field from Cosmogenic Nuclide 10Be in Loess of China

Zhao Guoqing 1,2,3, Zhou Weijian 1,2,4, Wu Zhenkun 1,2, Xian Feng 1,2,Kong Xianghui 1,2,3,Zhang Li 1,2,3   

  1. 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi′an 710075, China;
    2. Xi′an Accelerator Mass Spectrometry Center, Xi′an 710061, China;
    3. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Xi′an Jiaotong University, Xi′an 710049, China
  • Received:2010-03-03 Revised:2010-07-26 Online:2010-09-10 Published:2010-09-10

宇宙成因核素 10Be示踪古地磁场的研究在海洋和冰芯研究中得到了广泛应用,然而受黄土来源及沉降过程的复杂性制约,运用中国黄土 10Be示踪古地磁场变化的研究直到近年来才取得突破进展。综述了黄土 10Be的研究现状并指出将其应用于地磁场示踪研究存在的关键问题,重点介绍了为分离黄土 10Be浓度记录所包含的气候因素和地磁场影响因素而建立的LGM分离方法、剩磁矫顽力估算模型方法和“平均值概念”方法。各种创新数理方法的建立基本解决了黄土 10Be示踪古地磁场的科学难题,使黄土 10Be示踪古地磁场变化研究成为可能。

The study of the paleo-geomagnetic tracing using cosmogenic nuclide 10Be derived from the marine and ice core sediments has been widely applied. However, limited by the complexity of loess sources and the process of depositing, the investigation of 10Be in Chinese loess lags behind until mathematical methods were established recent years. The research status of 10Be in Chinese loess is introduced. Three new methods for tracing paleo-geomagnetic field variability are focused: The separation method of established Last Glacial Maximum, the remanence coercivity analysis model and the “mean value concept” method, which were established to separate climate effects from geomagnetic modulation effects on loess 10Be concentration. The establishment of mathematical methods have resolved the key problem of tracing paleo-geomagnetic field from 10Be in loess of China.

中图分类号: 

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