Magnetopause characteristics during a four‐hour interval of multiple crossings observed with GEOTAIL

Hideaki Kawano, S. Kokubun, T. Yamamoto, K. Tsuruda, H. Hayakawa, M. Nakamura, T. Okada, A. Matsuoka, A. Nishida

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This paper presents multiple magnetopause crossings observed with Geotail on October 17, 1992. On this day Geotail skimmed the magnetopause in the dawn flank sector (the spacecraft had a speed of ∼0.7 km/s normal to the nominal magnetopause) and crossed the magnetopause more than 45 times in four hours. When the magnetopause crossings were observed, the interplanetary magnetic field was southerly directed. For the large number of crossings we have examined the magnetopause normal directions by using the minimum variance analysis technique, and as a result we have confirmed in a statistical sense a clear inbound/outbound dependence of the magnetopause orientation consistent with the tailward‐moving recurrent bumps in the magnetopause. In addition, there is an implication that the northward (southward) flow along the magnetopause occured for the inward (outward) directed magnetic field component normal to the magnetopause.

Original languageEnglish
Pages (from-to)2895-2898
Number of pages4
JournalGeophysical Research Letters
Volume21
Issue number25
DOIs
Publication statusPublished - Jan 1 1994
Externally publishedYes

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magnetopause
intervals
magnetic field
interplanetary magnetic fields
variance analysis
spacecraft
sectors

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Kawano, H., Kokubun, S., Yamamoto, T., Tsuruda, K., Hayakawa, H., Nakamura, M., ... Nishida, A. (1994). Magnetopause characteristics during a four‐hour interval of multiple crossings observed with GEOTAIL. Geophysical Research Letters, 21(25), 2895-2898. https://doi.org/10.1029/94GL02100

Magnetopause characteristics during a four‐hour interval of multiple crossings observed with GEOTAIL. / Kawano, Hideaki; Kokubun, S.; Yamamoto, T.; Tsuruda, K.; Hayakawa, H.; Nakamura, M.; Okada, T.; Matsuoka, A.; Nishida, A.

In: Geophysical Research Letters, Vol. 21, No. 25, 01.01.1994, p. 2895-2898.

Research output: Contribution to journalArticle

Kawano, H, Kokubun, S, Yamamoto, T, Tsuruda, K, Hayakawa, H, Nakamura, M, Okada, T, Matsuoka, A & Nishida, A 1994, 'Magnetopause characteristics during a four‐hour interval of multiple crossings observed with GEOTAIL', Geophysical Research Letters, vol. 21, no. 25, pp. 2895-2898. https://doi.org/10.1029/94GL02100
Kawano, Hideaki ; Kokubun, S. ; Yamamoto, T. ; Tsuruda, K. ; Hayakawa, H. ; Nakamura, M. ; Okada, T. ; Matsuoka, A. ; Nishida, A. / Magnetopause characteristics during a four‐hour interval of multiple crossings observed with GEOTAIL. In: Geophysical Research Letters. 1994 ; Vol. 21, No. 25. pp. 2895-2898.
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AU - Nakamura, M.

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