| Alfvèn波与慢激波的相互作用 |
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| 引用本文： | 赵学溥,吕建永.Alfvèn波与慢激波的相互作用[J].地球物理学报,1988,31(5):487-499. |
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| 作者姓名： | 赵学溥 吕建永 |
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| 作者单位： | 北京大学地球物理系 |
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| 摘 要： | 本文分析了斜入射波矢与背景磁场和激波法线共面时,一维小幅度Alfvèn波干扰下,慢激波的稳定性问题;论证了Alfvèn波在慢激波上的射线反射和折射规律;并就日冕慢激波情形进行了具体的数值计算。结果表明,除非上游法向流速接近上游法向Alfvèn波波速,在上述斜入射的Alfvèn波干扰下,慢激波总是稳定的。日冕慢激波是这种稳定性的一个例子;日冕慢激波的存在,能使起源于日冕向行星际空间传播（不管它起源于日冕慢激波之内或外）的Alfvèn波的法向能流密度增大。
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| 关 键 词： | Alfvèn波 慢激波 日冕慢激波 |
| 收稿时间： | 1987-10-13 |
INTERACTION OF THE ALFVEN WAVES AND THE SLOW MODE SHOCKS |
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| ZHAO XUE-PU LU JIAN-YONG.INTERACTION OF THE ALFVEN WAVES AND THE SLOW MODE SHOCKS[J].Chinese Journal of Geophysics,1988,31(5):487-499. |
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| Authors: | ZHAO XUE-PU LU JIAN-YONG |
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| Institution: | Department of Geophysics, Peking University, Beijing |
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| Abstract: | The stability of the slow mode shocks perturbed by the one-dimensional, small-amplitude Alfvèn waves has been analysed under the condition of coplane among the obliquely incident wave vector, the background magnetic field and the normal of slow mode shock. The reflection and refraction of the Alfvèn waves have been derived on the plannar slow mode shock in general and calculated numerically on the coronal slow shock. It is shown that the slow mode shocks under the condition mentioned above are stable unless the normal flow velocity upstream approaches the normal Alfven velocity upstream, and that the energy flux density of the Alfvèn waves propagating toward the interplanetary space increases when the coronal slow shock exists. |
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| Keywords: | Alfvèn waves Slow mode shock Coronal slow shock |
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