Reconstruction of global micropulsations in the magnetosphere

M. H. Whang, S. P. Kuo, M. C. Lee

Research output: Contribution to journalArticlepeer-review


The coupling of hydromagnetic Alfvén waves is studied numerically in a dipolc-ficld 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
Issue number2
StatePublished - Apr 1991

ASJC Scopus subject areas

  • Condensed Matter Physics


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