| 地球磁尾和磁层顶磁场变化的随机特性 |
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| 引用本文： | 沐建林 蔡诗东. 地球磁尾和磁层顶磁场变化的随机特性[J]. 地球物理学报, 1990, 33(6): 621-628 |
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| 作者姓名： | 沐建林 蔡诗东 |
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| 作者单位： | 中国科学院物理研究所, 北京 100080 |
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| 摘 要： | 本文讨论了平板模型下电阻不稳定性使磁力线由对称平衡状态进入随机状态的可能性;给出该模型下以（x,z）为正则坐标的哈密顿函数表达式;在Harris平衡磁场分布下分析了撕裂模不稳定性,驱动重联和涡旋诱发重联引起的磁力线随机特性;估计了两个磁岛相互作用时磁力线进入随机态的临界值.本文结果可用于讨论地球磁层顶和磁尾处磁场的性质.
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| 关 键 词： | 磁力线 磁层 随机性 哈密顿函数 |
| 收稿时间： | 1989-11-06 |
STOCHASTICITY OF FIELD LINE IN SLAB GEOMETRY |
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| Mu JIAN-LIN TSAI SHIH-TUNG. STOCHASTICITY OF FIELD LINE IN SLAB GEOMETRY[J]. Chinese Journal of Geophysics, 1990, 33(6): 621-628 |
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| Authors: | Mu JIAN-LIN TSAI SHIH-TUNG |
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| Affiliation: | Institute of Physics, Academia Sinica, Beijing 100080 |
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| Abstract: | The stochasticity of the magnetic field line in the slab geometry due to the resistivity instability is discussed in this paper. A Hamiltonian with canonical coordinate (x, z) for the field line is given; the possibility of the stochastic field line caused by the tearing mode, driven re-connection and induce reconnection is analysed; The threshold for the generation of the stochastic field line is estimated, too. |
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| Keywords: | Magnetic field line Magnetosphere Stochasticity Hamiltonian. |
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