| 磁层顶磁岛结构及其非线性行为 |
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| 引用本文： | 王宪民, 濮祖荫, 王敬芳. 磁层顶磁岛结构及其非线性行为[J]. 地球物理学报, 1996, 39(01): 7-16, |
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| 作者姓名： | 王宪民 濮祖荫 王敬芳 |
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| 作者单位： | 1. 北京航天医学工程研究所, 北京 100094; 2. 北京大学地球物理系和非线性中心, 北京 100871; 3. 武汉大学空间物理系, 武汉 430072 |
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| 摘 要： | 解析研究了磁层顶磁岛结构时间演化的非线性过程；推导出磁岛宽度的解析式和磁岛发生分叉、混沌的条件；论证了磁重联生成的磁岛有不稳定平衡结构，外扰作用会破坏该结构，使磁岛出现突变和混沌；说明了中小尺度太阳风脉动易使磁岛破碎，导致磁场湍动重联，形成小尺度结构．
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| 关 键 词： | ; ; ; |
| 收稿时间： | 1995-07-13 |
THE MAGNETO-ISLAND STRUCTURES ANDITS NONLINEAR PROPERTIES IN THE MAGNETOPAUSE |
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| WANG XIAN-MIN, PU ZU-YIN, WANG JING-FANG. THE MAGNETO-ISLAND STRUCTURES ANDITS NONLINEAR PROPERTIES IN THE MAGNETOPAUSE[J]. Chinese Journal of Geophysics (in Chinese), 1996, 39(01): 7-16, |
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| Authors: | WANG XIAN-MIN PU ZU-YIN WANG JING-FANG |
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| Affiliation: | 1. Institute of Space Medico-Engineering, Beijing 100094, China; 2. Department of Geophysics, Peking University, Bejing 100871, China; 3. Department of Space Physics, Wuhan University, Wuhan 430072, China |
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| Abstract: | In the paper,the nonlinear process of the time evolution of the magneto-island structures in the magnetopause are studied analytically,the analytic formula of the magneto-island width and the critical conditions of magneto-island bifurcation and chaos are gotten.It Is demontrated that the magneto-island is a Instable structure which can be destroyed by solar wind turbulence and can produce catastrophes and chaos.The results indicated that the medium and small scale solar wind turbulance destroy the magneto-island easily and cause turbulent magnetic reconnection and form small scale structures. |
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| Keywords: | Magnetopause Magneto-island structure Bifurcation Chaos Turbulent magnetic reconnection |
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