Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms

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Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms. / Ebihara, Y.; Kasahara, S.; Seki, K.; Miyoshi, Y.; Fritz, T. A.; Chen, J.; Grande, M.; Zurbuchen, T. H.

In: Journal of Geophysical Research: Space Physics, Vol. 114, No. A5, A05219, 2009.

Research output: Contribution to journalArticle

Harvard

Ebihara, Y, Kasahara, S, Seki, K, Miyoshi, Y, Fritz, TA, Chen, J, Grande, M & Zurbuchen, TH 2009, 'Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms', Journal of Geophysical Research: Space Physics, vol. 114, no. A5, A05219. https://doi.org/10.1029/2009JA014120

APA

Ebihara, Y., Kasahara, S., Seki, K., Miyoshi, Y., Fritz, T. A., Chen, J., Grande, M., & Zurbuchen, T. H. (2009). Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms. Journal of Geophysical Research: Space Physics, 114(A5), [A05219]. https://doi.org/10.1029/2009JA014120

Vancouver

Ebihara Y, Kasahara S, Seki K, Miyoshi Y, Fritz TA, Chen J et al. Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms. Journal of Geophysical Research: Space Physics. 2009;114(A5). A05219. https://doi.org/10.1029/2009JA014120

Author

Ebihara, Y. ; Kasahara, S. ; Seki, K. ; Miyoshi, Y. ; Fritz, T. A. ; Chen, J. ; Grande, M. ; Zurbuchen, T. H. / Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms. In: Journal of Geophysical Research: Space Physics. 2009 ; Vol. 114, No. A5.

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@article{9715aadc8eb34818a7c9c1cbcb45cc80,
title = "Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms",
abstract = "The aim of this paper is to present, for the first time, almost simultaneous enhancements of both low- and high-charge-state oxygen ions in the inner magnetosphere during magnetic storms. Storm-time enhancements of low-charge-state O ions are well recognized, but the behavior of high-charge-state O ions is less known. Data simultaneously collected from the ACE, Geotail, and Polar satellites indicate the following: (1) In the inner magnetosphere (at L = 3–5), the number density of high-charge-state O ions was increased during the early phase of magnetic storms (Polar). (2) No corresponding enhancements were identified in the number density of O ions observed in the solar wind (ACE) and the near-Earth magnetotail (Geotail). (3) The number density of high-charge-state O ions present in the near-Earth magnetotail was considerably lower than in the solar wind and the inner magnetosphere. We calculated trajectories of O6+ ions under electric and magnetic field models. The O6+ ions that became observable in the energy window of Polar were transported from the high-latitude magnetopause to the inner magnetosphere when the convection electric field was strong. When the convection electric field was weak, the ions were reflected toward the distant tail. The O6+ ions that became observable in the energy window of Geotail were sufficiently transported from the low-latitude magnetopause to the near-Earth magnetotail regardless of the strength of the convection electric field. The observational facts may be adequately explained in terms of ion transport paths depending on the convection electric field with different entry points.",
author = "Y. Ebihara and S. Kasahara and K. Seki and Y. Miyoshi and Fritz, {T. A.} and J. Chen and M. Grande and Zurbuchen, {T. H.}",
year = "2009",
doi = "10.1029/2009JA014120",
language = "English",
volume = "114",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9380",
publisher = "American Geophysical Union",
number = "A5",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Simultaneous entry of oxygen ions originating from the Sun and Earth into the inner magnetosphere during magnetic storms

AU - Ebihara, Y.

AU - Kasahara, S.

AU - Seki, K.

AU - Miyoshi, Y.

AU - Fritz, T. A.

AU - Chen, J.

AU - Grande, M.

AU - Zurbuchen, T. H.

PY - 2009

Y1 - 2009

N2 - The aim of this paper is to present, for the first time, almost simultaneous enhancements of both low- and high-charge-state oxygen ions in the inner magnetosphere during magnetic storms. Storm-time enhancements of low-charge-state O ions are well recognized, but the behavior of high-charge-state O ions is less known. Data simultaneously collected from the ACE, Geotail, and Polar satellites indicate the following: (1) In the inner magnetosphere (at L = 3–5), the number density of high-charge-state O ions was increased during the early phase of magnetic storms (Polar). (2) No corresponding enhancements were identified in the number density of O ions observed in the solar wind (ACE) and the near-Earth magnetotail (Geotail). (3) The number density of high-charge-state O ions present in the near-Earth magnetotail was considerably lower than in the solar wind and the inner magnetosphere. We calculated trajectories of O6+ ions under electric and magnetic field models. The O6+ ions that became observable in the energy window of Polar were transported from the high-latitude magnetopause to the inner magnetosphere when the convection electric field was strong. When the convection electric field was weak, the ions were reflected toward the distant tail. The O6+ ions that became observable in the energy window of Geotail were sufficiently transported from the low-latitude magnetopause to the near-Earth magnetotail regardless of the strength of the convection electric field. The observational facts may be adequately explained in terms of ion transport paths depending on the convection electric field with different entry points.

AB - The aim of this paper is to present, for the first time, almost simultaneous enhancements of both low- and high-charge-state oxygen ions in the inner magnetosphere during magnetic storms. Storm-time enhancements of low-charge-state O ions are well recognized, but the behavior of high-charge-state O ions is less known. Data simultaneously collected from the ACE, Geotail, and Polar satellites indicate the following: (1) In the inner magnetosphere (at L = 3–5), the number density of high-charge-state O ions was increased during the early phase of magnetic storms (Polar). (2) No corresponding enhancements were identified in the number density of O ions observed in the solar wind (ACE) and the near-Earth magnetotail (Geotail). (3) The number density of high-charge-state O ions present in the near-Earth magnetotail was considerably lower than in the solar wind and the inner magnetosphere. We calculated trajectories of O6+ ions under electric and magnetic field models. The O6+ ions that became observable in the energy window of Polar were transported from the high-latitude magnetopause to the inner magnetosphere when the convection electric field was strong. When the convection electric field was weak, the ions were reflected toward the distant tail. The O6+ ions that became observable in the energy window of Geotail were sufficiently transported from the low-latitude magnetopause to the near-Earth magnetotail regardless of the strength of the convection electric field. The observational facts may be adequately explained in terms of ion transport paths depending on the convection electric field with different entry points.

UR - http://hdl.handle.net/2160/8339

U2 - 10.1029/2009JA014120

DO - 10.1029/2009JA014120

M3 - Article

VL - 114

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9380

IS - A5

M1 - A05219

ER -

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