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 language | English |
|---|---|
| Pages (from-to) | 2891-2894 |
| Number of pages | 4 |
| Journal | Geophysical Research Letters |
| Volume | 21 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - Dec 15 1994 |
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All Science Journal Classification (ASJC) codes
- Geophysics
- Earth and Planetary Sciences(all)
Cite this
A flux rope followed by recurring encounters with traveling compression regions : GEOTAIL observations. / Kawano, H.; 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, 15.12.1994, p. 2891-2894.Research output: Contribution to journal › Article
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TY - JOUR
T1 - A flux rope followed by recurring encounters with traveling compression regions
T2 - GEOTAIL observations
AU - Kawano, H.
AU - Yamamoto, T.
AU - Kokubun, S.
AU - Tsuruda, K.
AU - Lui, A. T.Y.
AU - Williams, D. J.
AU - Yumoto, K.
AU - Hayakawa, H.
AU - Nakamura, M.
AU - Okada, T.
AU - Matsuoka, A.
AU - Shiokawa, K.
AU - Nishida, A.
PY - 1994/12/15
Y1 - 1994/12/15
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=85005698770&partnerID=8YFLogxK
U2 - 10.1029/94GL02101
DO - 10.1029/94GL02101
M3 - Article
AN - SCOPUS:85005698770
VL - 21
SP - 2891
EP - 2894
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 25
ER -