| 行星际空间慢激波的演化 |
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| 引用本文： | 胡友秋.行星际空间慢激波的演化[J].地球物理学报,1994,37(3):275-281. |
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| 作者姓名： | 胡友秋 |
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| 作者单位： | 中国科学技术大学, 合肥 230026 |
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| 摘 要： | 日心距离０．３ＡＵ以内形成的磁流体慢激波在向行星际空间传播过程中，通过向上游发出快压缩波而不断减弱．所发出的快压缩波经非线性变陡转化为快激波，形成由原慢激波和新生快激波构成的激波系统．强度不断减弱的慢激波将逐渐演变为准切向间断．这可能是在１ＡＵ附近很少观测到慢激波的重要原因．
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| 关 键 词： | 行星际动力学 磁流体力学 慢激波 |
| 收稿时间： | 1993-07-26 |
EVOLUTION OF SLOW SHOCKS IN THE INTERPLANETARY SPACE |
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| HU YOU-QIU.EVOLUTION OF SLOW SHOCKS IN THE INTERPLANETARY SPACE[J].Chinese Journal of Geophysics,1994,37(3):275-281. |
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| Authors: | HU YOU-QIU |
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| Institution: | University of Science and Technology of China, Hefei 230026 |
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| Abstract: | A magnetohydrodynamic slow shock, formed within 0. 3AU and propagating into the interplanetary space, diminishes continuously by launching fast compression waves upstream, which later on become a fast shock through nonlinear steepening process.A shock system occurs as a result. consisting of the original slow shock and the newly developed fast shock. Moreover, the diminishing slow shock gradually evolves into a quasi-tangential discontinuity. This Is probably an important cause for the fact that slow shocks were scarecely observed at 1 AU. |
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| Keywords: | Interplanetary dynamics Magnetohydrodynamics Slow shock |
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