极地冰芯不溶性微粒研究进展

doi:10.11867/j.issn.1001-8166.2005.02.0216

地球科学进展 ›› 2005, Vol. 20 ›› Issue (2): 216 -222. doi: 10.11867/j.issn.1001-8166.2005.02.0216

极地冰芯不溶性微粒研究进展

韦丽佳 ^1,2，李院生 ¹，谭德军 ¹，周丽娅 ^1,2，闫明 ¹，胡凯 ²，温家洪 ¹，孙波 ¹，刘雷保 ¹

1.中国极地研究中心,上海 200129；2.南京大学地球科学系,江苏南京 210093

收稿日期:2003-08-26 修回日期:2004-05-17 出版日期:2005-02-25
通讯作者: 李院生（1956-），男，内蒙古包头市人，研究员，主要从事冰川化学、微粒的研究.  E-mail:yshli@sh163e.sta.net.cn
基金资助:
国家自然科学基金项目“东南极冰盖雪气冰界面化学迁移、物质通量与气候记录”（编号：49973006）；科技部科技基础性工作专项“南极地区地球环境监测与关键过程研究——东南极雪冰现代过程研究、埃默里冰架变化及其底部过程监测”（编号：2001DIA50040）资助.

REVIEW OF RESEARCH ON INSOLUBLE MICROPARTICLES IN THE POLAR CORES

WEI Lijia ^1,2;LI Yuan-sheng ¹;TAN Dejun ¹;ZHOU Liya ^1,2;YAN Ming ¹;HU Kai ²;WEN Jiahong ¹;SUN Bo ¹;LIU Leibao ¹

1. Polar Research Institute of China, Shanghai 200129, China;2.Earthscience Department, Nanjing University, Nanjing 210093,China

Received:2003-08-26 Revised:2004-05-17 Online:2005-02-25 Published:2005-02-25

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极地冰芯包含了大气循环的各种信息，微粒作为其中一个重要的参数，在揭示古环境和古气候信息中起着很重要的作用。冰芯中微粒的含量变化可用于年层的划分，矿物和粒径特征可以用于源区以及大气本底值的研究。另外，微粒记录中还包含了火山、沙尘暴以及人类活动等特殊事件的信息。在过去的50年间，在几大冰芯研究的基础上，极地冰芯微粒的分析工作已取得了很大的成果。近年来，得益于测试水平的迅速提高，微粒研究工作有了长足进展。展望未来，人们将会开拓更新的研究领域。

关键词: 微粒, 冰芯, 气溶胶, 极地

There are various kinds of information recorded in the polar ice core. In the past research, microparticles have been playing a significant role in implicating paleo-environment and paleo-climate. To sum up, the concentration of microparticles is high in winter and low in summer, and moreover, it behaves high in cold term and low in warm term. Past work on microparticles in ice core is discussed in this paper as a summary. Emphasis is laid on the achievement acquired from the ice cores drilled in Polar region. Ice age can be determined based on the seasonal character of microparticles. For shallow ice cores, dating is accurate just according to microparticles. But for deep ice cores, it must be carried on together with oxygen isotopes. The mineral and radius characteristics can implicate the source and the background value. Furthermore, information of atmosphere circumfluence, intensity of the wind power, droughts, volcano, sandstorm, etc will also be recorded in them. Human factors in global change are always the hotspot of research. In recent years, burning source and carbon are talked much more than before. In the analysis of Euro-core in Greenland, three different types of burning source are found, which will be much helpful in tracing the hunman information. In spite of the immense achievement people have got, there are still lots of difficulties in analysis and sampling. In the past decades, much work has been done on the analysis technique of particles. There are four main methods now in use. Firstly, optics microscope and XEDS are used in the analysis of the single particle, but it is limited to 5μm. Secondly and regularly, Counlter analyzer is used in measuring the quantity and radius of microparticles by the current between the two electrodes. This method is fit for the scale between 0.4~1200μm. Third, after getting enough samples by largely melting, XRD, microscopes, thermionization mass spectrum are utilized in finding out the characters of microparticles on mineralogy, isotopes and granularity. Finally, volcano particles analysis is used in recent years. Volcanic glass and eruptible chippings are transfer to the polar region by atmospheric circumfluence after huge volcano eruption. It is findable of volcanic layers in the ice core of Antarctic. Restrict by the geography and the low concentration of particles, it is hard but necessary to largely sample in Antarctica. It will be advantageous to analyze the ice core directly in the field. But now the technology remains exiguous. Biscaye has explored a new method in Greenland by melting a great amount of ice to get particles in the field. But it is hard to realize in Antarctica. Exterior factors also block the precision of analysis, such as the ice drape, the low accumulation rate, etc.

Key words: Particle, Ice core, Aerosol, Pole

中图分类号:

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