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火星表面风沙物理过程及沙尘暴的起动风速

蔡黄兵 陈出新

蔡黄兵, 陈出新. 火星表面风沙物理过程及沙尘暴的起动风速[J]. 空间科学学报, 2013, 33(4): 374-380. doi: 10.11728/cjss2013.04.374
引用本文: 蔡黄兵, 陈出新. 火星表面风沙物理过程及沙尘暴的起动风速[J]. 空间科学学报, 2013, 33(4): 374-380. doi: 10.11728/cjss2013.04.374
CAI Huangbing, CHEN Chuxin. Physics of Wind-blown Sand and the Threshold Wind Speed of Dust Storms on Mars[J]. Journal of Space Science, 2013, 33(4): 374-380. doi: 10.11728/cjss2013.04.374
Citation: CAI Huangbing, CHEN Chuxin. Physics of Wind-blown Sand and the Threshold Wind Speed of Dust Storms on Mars[J]. Journal of Space Science, 2013, 33(4): 374-380. doi: 10.11728/cjss2013.04.374

火星表面风沙物理过程及沙尘暴的起动风速

doi: 10.11728/cjss2013.04.374
基金项目: 国家自然科学基金项目(41074118, 41121003);中国科学院知识创新项目(KZCX2-EW-QN501)和中国科学院重点 部署项目(KZZD-EW-01)共同资助
详细信息
    作者简介:

    蔡黄兵, E-mail: chb@mail.ustc.edu.cn.

    通讯作者:

    陈出新,E-mail:chuxin@ustc.edu.cn

  • 中图分类号: P353

Physics of Wind-blown Sand and the Threshold Wind Speed of Dust Storms on Mars

  • 摘要: 通过建立风吹动地表沙粒运动的模型并根据大气湍流边界层风速廓线规律,计算了火星上沙尘暴的起动风速和沙尘暴发生时空中悬浮沙尘粒径的大小,并对沙粒从地面跳起进入气流的方式进行了验证.发现当大气为中性层结时,火星沙尘暴的起动需要离地面2m高处的风速达到28.7m·s-1.在起动临界风速下,地表沙粒需要滚动一个粒径的距离才能跳起,沙尘暴发生后,火星大气中悬浮沙尘的粒径小于30μm.

     

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  • 被引次数: 0
出版历程
  • 收稿日期:  2012-03-16
  • 修回日期:  2012-09-17
  • 刊出日期:  2013-07-15

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