收稿日期: 1998-08-31
修回日期: 1999-03-23
网络出版日期: 1999-10-01
基金资助
中国科学院“九五”重大项目“亚洲季风气候变化与全球变化研究”(编号:KZ951-A1-402-03-03)资助。
MICROPARTICLES IN MODERN GLACIERS AND CLIMATIC AND ENVIRONMENTAL CHANGES
Received date: 1998-08-31
Revised date: 1999-03-23
Online published: 1999-10-01
刘纯平,姚檀栋,谢树成 . 现代冰川中的微粒研究与气候环境变化[J]. 地球科学进展, 1999 , 14(5) : 513 -517 . DOI: 10.11867/j.issn.1001-8166.1999.05.0513
Microparticles in modern glaciers is an important indices of climate and environment variation. Microparticles analysis can reveal the climatic and environmental changes in the past. In this paper, significance of microparticles analysis is simply introduced. According to exiting data,microparticles contain all kinds of information, such as microparticle source regions, the characteristics of microparticle changes, dating of ice cores, volcanic activities, aerosol and so on. Typical mineral in
different latitude, such as kaolinite and chlorite, tephra, the coarseness, size profile as indices, source area of microparticle may be determined. Base on typical mineral characteristics and size profile,microparticle potation region may be concluded. Moreover, source region will be studies further.Microparticle concentration variation is connected with dry-wet, temperature and atmospheric circulation.Microparticle concentration analysis indicated that microparticles concentration decreases with climate warming, which is consistent with the conclusion that there is more microparticles concentration in cold periods and less microparticles concentration in warming periods. During wet periods, microparticles concentration is low, during dry periods, microparticles concentration is high. The strength of
atmospheric circulation increases, microparticles concentration increases, conversely, it decreases.Microparticles analysis can also reveal special event, such as floating dust, sand-dust storms and volcanic activities,etc.
Key words： Microparticles; Modern glaciers; Climate; Environment.
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