| 磁层顶旋转间断的稳定性 |
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| 引用本文： | 王水,朱烈,樊小英.磁层顶旋转间断的稳定性[J].空间科学学报,1986,6(2):89-96. |
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| 作者姓名： | 王水 朱烈 樊小英 |
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| 作者单位： | 中国科学技术大学地球和空间科学系 |
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| 摘 要： | 本文应用三层模式和ISEE卫星观测资料,讨论了磁层顶旋转间断的稳定性。结果表明:(1)在磁层顶旋转间断中可以激发一种不稳定性。随着波数k增大,不稳定性增长率也将增加。(2)当行星际磁场为北向时,磁层顶旋转间断是稳定的;当行星际磁场逐渐变为南向时,不稳定性增长率将迅速增加。(3)当太阳风速度较大时,不稳定性增长率相应地也较大。(4)当行星际磁场为南向时,随着行星际磁场与磁层顶切平面交角的增大,不稳定性的增长率也迅速增加。
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| 收稿时间： | 1985-01-18 |
Stabilities of Rotational Discontinuity for Magnetopause |
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| Affiliation: | Department of Earth and Space Sciences, University of Science and Technology of China |
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| Abstract: | In this paper, by using a three-layer model and the observations from Satellite ISEE, the stabilities of rotational discontinuity for magnetopause are discussed. The results show that: (1) a kind of instability may be excited in the magnetopause rotational discontinuity, the growth rate of the instability increases as the wave number k increases; (2) when the interplanetary magnetic field is northward, the magaaetopause rotational discontinuity is stable; when the interplanetary magnetic field becomes southward gradually, the growth rate of the instability increase rapidly; (3) when the velocity of solar wind is larger, the growth of rate of instability is larger correspon-dently; (4) when the interplanetary magnetic field is southward, the growth rate of instability increases rapidly as the angle between the interplanetary magnetic field and the tangential surface of the magnetopause increases. |
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