Dispersive magnetosheath-like ion injections in the evening sector on January 11, 1997

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Dispersive magnetosheath-like ion injections in the evening sector on January 11, 1997. / Sandahl, I.; Koskinen, HEJ; Malkki, AM; Pulkkinen, T.I.; Budnik, EY; Fedorov, AO; Frank, LA; Sigwarth, JB.

In: Geophysical Research Letters, Vol. 25, No. 14, 15.07.1998, p. 2569-2572.

Research output: Contribution to journalArticle

Harvard

Sandahl, I, Koskinen, HEJ, Malkki, AM, Pulkkinen, TI, Budnik, EY, Fedorov, AO, Frank, LA & Sigwarth, JB 1998, 'Dispersive magnetosheath-like ion injections in the evening sector on January 11, 1997', Geophysical Research Letters, vol. 25, no. 14, pp. 2569-2572. https://doi.org/10.1029/98GL50416

APA

Sandahl, I., Koskinen, HEJ., Malkki, AM., Pulkkinen, T. I., Budnik, EY., Fedorov, AO., ... Sigwarth, JB. (1998). Dispersive magnetosheath-like ion injections in the evening sector on January 11, 1997. Geophysical Research Letters, 25(14), 2569-2572. https://doi.org/10.1029/98GL50416

Vancouver

Author

Sandahl, I. ; Koskinen, HEJ ; Malkki, AM ; Pulkkinen, T.I. ; Budnik, EY ; Fedorov, AO ; Frank, LA ; Sigwarth, JB. / Dispersive magnetosheath-like ion injections in the evening sector on January 11, 1997. In: Geophysical Research Letters. 1998 ; Vol. 25, No. 14. pp. 2569-2572.

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@article{39988ad31144447f867a26cdf59ef5bf,
title = "Dispersive magnetosheath-like ion injections in the evening sector on January 11, 1997",
abstract = "While the plasma cloud of the January 1997 CME event was passing the Earth, the Interball Auroral Probe (Interball-2) crossed the duskside auroral oval toward a contracted polar cap. The PROMICS-3 plasma instrument observed several consecutive dispersion ramps of magnetosheath-like protons over a wide range of magnetic local times (16-21 MLT). The last dispersion ramps were observed at later local times than previously reported, likely caused by the extreme conditions during a period when the magnetosphere was immersed in the dense plasma cloud. The Polar/VIS images of the oval show a very contracted polar cap. During the first clear dispersion event energetic oxygen ions were detected. They were also observed by the the particle detectors of Polar which was in close conjugation with Interball-2 right at this moment. We suggest that the dispersion ramps are signatures of ion injections formed by impulsive entry of magnetosheath ions through the duskside flank into the magnetosphere during a period of strongly northward IMF and contracted polar cap.",
author = "I. Sandahl and HEJ Koskinen and AM Malkki and T.I. Pulkkinen and EY Budnik and AO Fedorov and LA Frank and JB Sigwarth",
year = "1998",
month = "7",
day = "15",
doi = "10.1029/98GL50416",
language = "English",
volume = "25",
pages = "2569--2572",
journal = "Geophysical Research Letters",
issn = "0094-8276",
number = "14",

}

RIS - Download

TY - JOUR

T1 - Dispersive magnetosheath-like ion injections in the evening sector on January 11, 1997

AU - Sandahl, I.

AU - Koskinen, HEJ

AU - Malkki, AM

AU - Pulkkinen, T.I.

AU - Budnik, EY

AU - Fedorov, AO

AU - Frank, LA

AU - Sigwarth, JB

PY - 1998/7/15

Y1 - 1998/7/15

N2 - While the plasma cloud of the January 1997 CME event was passing the Earth, the Interball Auroral Probe (Interball-2) crossed the duskside auroral oval toward a contracted polar cap. The PROMICS-3 plasma instrument observed several consecutive dispersion ramps of magnetosheath-like protons over a wide range of magnetic local times (16-21 MLT). The last dispersion ramps were observed at later local times than previously reported, likely caused by the extreme conditions during a period when the magnetosphere was immersed in the dense plasma cloud. The Polar/VIS images of the oval show a very contracted polar cap. During the first clear dispersion event energetic oxygen ions were detected. They were also observed by the the particle detectors of Polar which was in close conjugation with Interball-2 right at this moment. We suggest that the dispersion ramps are signatures of ion injections formed by impulsive entry of magnetosheath ions through the duskside flank into the magnetosphere during a period of strongly northward IMF and contracted polar cap.

AB - While the plasma cloud of the January 1997 CME event was passing the Earth, the Interball Auroral Probe (Interball-2) crossed the duskside auroral oval toward a contracted polar cap. The PROMICS-3 plasma instrument observed several consecutive dispersion ramps of magnetosheath-like protons over a wide range of magnetic local times (16-21 MLT). The last dispersion ramps were observed at later local times than previously reported, likely caused by the extreme conditions during a period when the magnetosphere was immersed in the dense plasma cloud. The Polar/VIS images of the oval show a very contracted polar cap. During the first clear dispersion event energetic oxygen ions were detected. They were also observed by the the particle detectors of Polar which was in close conjugation with Interball-2 right at this moment. We suggest that the dispersion ramps are signatures of ion injections formed by impulsive entry of magnetosheath ions through the duskside flank into the magnetosphere during a period of strongly northward IMF and contracted polar cap.

U2 - 10.1029/98GL50416

DO - 10.1029/98GL50416

M3 - Article

VL - 25

SP - 2569

EP - 2572

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 14

ER -

ID: 3012748