Reconstruction of global micropulsations in the magnetosphere

M. H. Whang, Spencer Kuo, M. C. Lee

Research output: Contribution to journalArticle

Abstract

The coupling of hydromagnetic Alfven waves is studied numerically in a dipole-field model of the magnetosphere. The two coupled hydromagnetic equations derived by Radoski are solved as an implicit boundary-value problem, namely the boundary conditions at the magnetopause are determined self-consistently. Thus the calculated wave-field distribution inside the magnetosphere can match all known linear characteristic features of the stormtime Pc5 waves observed on 14/15 November 1979 from satellites. A set of proper boundary conditions is found, excellent agreement between the numerical results and observations is demonstrated. Based on the very limited spatial coverage (L ≈ 6.6 and within a latitudinal region (-10°, 10°)), of the data provided by the satellites, the theoretical model can successfully reconstruct the global micropulsations in the magnetosphere and identify the source regions of hydromagnetic waves.

Original languageEnglish (US)
Pages (from-to)159-172
Number of pages14
JournalJournal of Plasma Physics
Volume45
Issue numberpt 2
StatePublished - Apr 1991

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micropulsations
magnetospheres
magnetohydrodynamic waves
magnetohydrodynamics
boundary conditions
magnetopause
boundary value problems
dipoles

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Reconstruction of global micropulsations in the magnetosphere. / Whang, M. H.; Kuo, Spencer; Lee, M. C.

In: Journal of Plasma Physics, Vol. 45, No. pt 2, 04.1991, p. 159-172.

Research output: Contribution to journalArticle

Whang, MH, Kuo, S & Lee, MC 1991, 'Reconstruction of global micropulsations in the magnetosphere', Journal of Plasma Physics, vol. 45, no. pt 2, pp. 159-172.
Whang, M. H. ; Kuo, Spencer ; Lee, M. C. / Reconstruction of global micropulsations in the magnetosphere. In: Journal of Plasma Physics. 1991 ; Vol. 45, No. pt 2. pp. 159-172.
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