| 粉尘释放和沉积机制的研究进展 |
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| 引用本文： | 黄宁,辜艳丹.粉尘释放和沉积机制的研究进展[J].地球科学进展,2009,24(11). |
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| 作者姓名： | 黄宁 辜艳丹 |
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| 作者单位： | 兰州大学西部灾害与环境力学教育部重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，国家自然科学基金中法合作研究项目，高等学校博士学科点专项科研基金 |
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| 摘 要： | 风蚀地表释放的粉尘气溶胶在其输送和沉积过程中产生的直接和间接环境效应促进了对其释放和沉积机制的研究.随着土壤风蚀研究的发展,对粉尘释放机制有了较为深入地研究,从简单的经验方程模型发展到目前考虑粉尘释放微观过程的具有清晰物理机制的释放模型,并在大尺度沙尘预报研究中得到了广泛应用.粉尘沉积主要集中于对干沉积和云下清除过程的研究,而对云内清除过程认识不足.简要回顾了粉尘释放和沉积机制研究的发展历史,系统地评述了研究的现状,提出了粉尘释放和沉积模拟研究中存在的问题和今后的发展趋势.
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| 关 键 词： | 粉尘释放 沉积 起动风速 物理机制 |
Review of the Mechanism of Dust Emission and Deposition |
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| HUANG Ning,GU Yandan.Review of the Mechanism of Dust Emission and Deposition[J].Advance in Earth Sciences,2009,24(11). |
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| Authors: | HUANG Ning GU Yandan |
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| Abstract: | In its transport and deposition processes, the dust aerosol brings both direct and indirect environmental effects, which promotes research on mechanism of dust emission and deposition. With the development of Aeolian erosion research, the understanding of mechanism of the dust emission becomes deeper. The research developed from simple experiential equation to dust emission models with clear physical mechanism, in which the micro-process of dust emission is taken into consideration, and these dust emission models are widely used in the forecasting of dust storm at large-scale space. The research of dust deposition is concentrated on dry deposition of du9t and its scavenging process below clouds, while the research on removal process of dust in the cloud is relatively fewer. This paper briefly reviewed the history of mechanism research of dust emission and deposition and summarized the recent achievements. Finally, the authors analyzed the problems in the present study, and suggested the further trends of study. |
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| Keywords: | Dust emission Deposition Threshold wind velocity Physical mechanism |
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