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• 论文 •     Next Articles

Stabilities of Rotational Discontinuity for Magnetopause

Wang Shui, Zhu Lie, Fan Xiao-ying   

  1. Department of Earth and Space Sciences, University of Science and Technology of China
  • Received:1985-01-18 Revised:1900-01-01 Online:1986-04-24 Published:1986-04-24

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.

Key words: Magnetic storm, Geomagnetic Pulsations, Solar wind dynamic pressure, Interplanetary magnetic field