A flux rope followed by recurring encounters with traveling compression regions: GEOTAIL observations

Hideaki Kawano, T. Yamamoto, S. Kokubun, K. Tsuruda, A. T.Y. Lui, D. J. Williams, K. Yumoto, H. Hayakawa, M. Nakamura, T. Okada, A. Matsuoka, K. Shiokawa, A. Nishida

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This paper reports a peculiar series of events observed with Geotail on October 24, 1992 at X ≃ −80 RE. On this day a combination of a bipolar perturbation in By and a double‐peaked perturbation in Bz, signature of a flux rope, was observed. Following this flux rope, bipolar Bz events, identifiable as Traveling Compression Regions (TCRs), were recurrently observed. The axis of the flux rope was deduced to be field‐aligned. Energetic ions (electrons) streamed earthward (tailward) in the flux rope. During the TCRs, the E×B flow showed a bipolar north‐then‐south perturbation, consistent with expected lobe plasma motion. The TCRs corresponded to weak ground magnetic disturbances and Pi2 waves. The observations can be explained by a model in which quasi‐stagnant plasmoids (Nishida et al., 1986) are recurrently generated.

Original languageEnglish
Pages (from-to)2891-2894
Number of pages4
JournalGeophysical Research Letters
Volume21
Issue number25
DOIs
Publication statusPublished - Jan 1 1994
Externally publishedYes

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encounters
compression
perturbation
magnetic disturbances
energetics
lobes
plasma
disturbance
electron
ion
signatures
ions
electrons

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Kawano, H., Yamamoto, T., Kokubun, S., Tsuruda, K., Lui, A. T. Y., Williams, D. J., ... Nishida, A. (1994). A flux rope followed by recurring encounters with traveling compression regions: GEOTAIL observations. Geophysical Research Letters, 21(25), 2891-2894. https://doi.org/10.1029/94GL02101

A flux rope followed by recurring encounters with traveling compression regions : GEOTAIL observations. / Kawano, Hideaki; Yamamoto, T.; Kokubun, S.; Tsuruda, K.; Lui, A. T.Y.; Williams, D. J.; Yumoto, K.; Hayakawa, H.; Nakamura, M.; Okada, T.; Matsuoka, A.; Shiokawa, K.; Nishida, A.

In: Geophysical Research Letters, Vol. 21, No. 25, 01.01.1994, p. 2891-2894.

Research output: Contribution to journalArticle

Kawano, H, Yamamoto, T, Kokubun, S, Tsuruda, K, Lui, ATY, Williams, DJ, Yumoto, K, Hayakawa, H, Nakamura, M, Okada, T, Matsuoka, A, Shiokawa, K & Nishida, A 1994, 'A flux rope followed by recurring encounters with traveling compression regions: GEOTAIL observations', Geophysical Research Letters, vol. 21, no. 25, pp. 2891-2894. https://doi.org/10.1029/94GL02101
Kawano, Hideaki ; Yamamoto, T. ; Kokubun, S. ; Tsuruda, K. ; Lui, A. T.Y. ; Williams, D. J. ; Yumoto, K. ; Hayakawa, H. ; Nakamura, M. ; Okada, T. ; Matsuoka, A. ; Shiokawa, K. ; Nishida, A. / A flux rope followed by recurring encounters with traveling compression regions : GEOTAIL observations. In: Geophysical Research Letters. 1994 ; Vol. 21, No. 25. pp. 2891-2894.
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