| 极区夏季中层顶尘埃分层的锐边界结构研究 |
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| 引用本文： | 李辉,吴健,吴军,车海琴.极区夏季中层顶尘埃分层的锐边界结构研究[J].极地研究,2009,21(4):272-278. |
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| 作者姓名： | 李辉 吴健 吴军 车海琴 |
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| 作者单位： | 中国电波传播研究所，电波环境特性及模化技术国家重点实验室 |
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| 摘 要： | 火箭探空实验观测结果显示，极区夏季中层顶尘埃等离子体分层中存在着稳定的锐边界结构。本文采用了流体力学方程组和尘埃粒子自洽电荷变化模型，从尘埃等离子体电动力学的角度出发，利用数值模拟研究了尘埃分层结构中尖锐边界形成的物理过程。物理分析和数值模拟结果表明，中层顶区域存在的带电冰晶粒子在等离子体及电磁力等相互作用下，很容易形成一种在时间和空间上存在长时间，稳定的局域结构，这个结构可以用来解释我们观测到的一些实验现象。
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| 关 键 词： | 尘埃等离子体 极区夏季中层回波(PMSE) 锐边界结构 |
STUDY ON THE SHARP BOUNDARY OF LAYERED DUST STRUCTURE IN THE SUMMER POLAR MESOPAUSE |
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| Li Hui,Wu Jian,Wu Jun,Che Haiqing.STUDY ON THE SHARP BOUNDARY OF LAYERED DUST STRUCTURE IN THE SUMMER POLAR MESOPAUSE[J].Chinese Journal of Polar Research,2009,21(4):272-278. |
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| Authors: | Li Hui Wu Jian Wu Jun Che Haiqing |
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| Abstract: | The rocket experimental data indicated that the layered dusty plasma structure has a sharp boundary in the summer polar mesopause. In order to combine with the experimental results, in this paper, tradition hydrodynamic equations and charging equation is adopted to build physical models of the dusty plasma to study the physics process about the sharp boundary in the stratified structure. The theoretical analysis and numerical result is shown that charged dust cloud immersed in a plasma under the action of electric field and other force, could develop a longtime and steady structures, which is can be used to explain the experimental phenomena. |
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| Keywords: | dusty plasma polar mesosphere summer echoes (PMSE) sharp boundary |
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