| 塔里木盆地地区沙尘气溶胶特征分析 |
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| 引用本文： | 高卫东,姜巍.塔里木盆地地区沙尘气溶胶特征分析[J].干旱区资源与环境,2002,16(4):75-78. |
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| 作者姓名： | 高卫东 姜巍 |
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| 作者单位： | 中科院新疆生态与地理研究所,乌鲁木齐,830011 |
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| 基金项目： | 中日沙尘暴合作项目 (亚洲沙尘形成、输送机制及其对我国气候与环境影响的研究 ) |
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| 摘 要： | 沙尘天气是塔里木盆地地区常见的天气现象 ,对沙尘气溶胶的分析表明 ,尘暴期间 ,沙尘气溶胶浓度远大于非尘暴期间。沙尘气溶胶小颗粒绝对浓度大幅度增加 ;百分比含量也迅速增加 ;小颗粒 ( <3.3um)与大颗粒 ( >3.3um)的相对浓度呈大幅度增加趋势 ,说明尘暴期间由于当地沙源丰富 ,细物质较多 ,细小颗粒迅速被携带到高空 ,成为沙尘气溶胶的主要来源。阿克苏站气溶胶中 Al等元素在不同高度的谱分布呈单峰型 ,浓度最大值出现在 4.7- 7.0 um范围内。富集因子分析表明 ,阿克苏站和策勒站沙尘暴和扬尘天气的各地壳元素含量均高于浮尘和背景大气 ,而且能见度愈小 ,高出的比例愈大 ;各种沙尘天气发生时 ,均以亲地元素的浓度为最高。
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| 关 键 词： | 塔里木盆地 气溶胶 TSP浓度 谱分析 富集因子分析 |
| 文章编号： | 1003-7578(2002)04-075-04 |
| 修稿时间： | 2001年12月28 |
The Analysis of Sand-Dust Aerosol Characters in Tarim Basin |
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| GAO Wei-dong JIANG Wei.The Analysis of Sand-Dust Aerosol Characters in Tarim Basin[J].Journal of Arid Land Resources and Environment,2002,16(4):75-78. |
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| Authors: | GAO Wei-dong JIANG Wei |
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| Abstract: | Sand dust is the normal weather phenomenon in Tarim basin region,the analysis of sand dust aerosol indicated that its concentration during sand-dust storm is much more larger than that during non-sand dust storm period.The concentration of small granule of sand dust aerosol increased largely and its containt also increased quickly.The comparative concentration of small granule (<3.3um)and big granule(>3.3um) increased quickly.Because the sand resources were plentiful,and most of them were small materials so they were the main resources of sand dust aerosol. The distributions of Aluminum etc.elements in aerosol spectrum have one peak at Akesu station.The peak positions were in the range 4.7-7.0 um.The resulf of Enrichment factor analysis indicated that the crust element concentration in sand-dust storm were higher than that in floating dust and background atmosphere.The crust elements had the highest concentration when all kinds of sand weather happened. |
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| Keywords: | Tarim Basin aerosol TSP concentration spectrum analysis enrichment factor |
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