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Auroral streamers and magnetic flux closure

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Auroral streamers and magnetic flux closure. / Hubert, B.; Kauristie, K.; Amm, O. et al.
In: Geophysical Research Letters, Vol. 34, No. 15, L15105, 09.08.2007.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Hubert, B, Kauristie, K, Amm, O, Milan, SE, Grocott, A, Cowley, SWH & Pulkkinen, TI 2007, 'Auroral streamers and magnetic flux closure', Geophysical Research Letters, vol. 34, no. 15, L15105. https://doi.org/10.1029/2007GL030580

APA

Hubert, B., Kauristie, K., Amm, O., Milan, S. E., Grocott, A., Cowley, S. W. H., & Pulkkinen, T. I. (2007). Auroral streamers and magnetic flux closure. Geophysical Research Letters, 34(15), Article L15105. https://doi.org/10.1029/2007GL030580

Vancouver

Hubert B, Kauristie K, Amm O, Milan SE, Grocott A, Cowley SWH et al. Auroral streamers and magnetic flux closure. Geophysical Research Letters. 2007 Aug 9;34(15):L15105. doi: 10.1029/2007GL030580

Author

Hubert, B. ; Kauristie, K. ; Amm, O. et al. / Auroral streamers and magnetic flux closure. In: Geophysical Research Letters. 2007 ; Vol. 34, No. 15.

Bibtex

@article{a671da30b8dd47b5a4b8cfb531dab5be,
title = "Auroral streamers and magnetic flux closure",
abstract = "On 7 December 2000 at 2200 UT an auroral streamer was observed to develop above Scandinavia with the IMAGE-FUV global imagers. The ionospheric equivalent current deduced from the MIRACLE-IMAGE Scandinavian ground-based network of magnetometers is typical of a substorm-time streamer. Observations of the proton aurora using the SI12 imager onboard the IMAGE satellite are combined with measurements of the ionospheric convection obtained by the SuperDARN radar network to compute the dayside merging and nightside flux closure rates. On the basis of this and other similar events, it is found that auroral streamers appear during the period of most intense flux closure in the magnetotail, most often shortly after substorm onset. The ionospheric convection velocity, as measured by SuperDARN, appears to be reduced in the vicinity of the streamer, suggesting de-coupling of magnetospheric and ionospheric plasma flows in the region of enhanced ionospheric conductance.",
keywords = "streamer, flux closure, BBF",
author = "B. Hubert and K. Kauristie and O. Amm and Milan, {S. E.} and A. Grocott and Cowley, {S. W. H.} and Pulkkinen, {T. I.}",
note = "Copyright 2007 by the American Geophysical Union.",
year = "2007",
month = aug,
day = "9",
doi = "10.1029/2007GL030580",
language = "English",
volume = "34",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd",
number = "15",

}

RIS

TY - JOUR

T1 - Auroral streamers and magnetic flux closure

AU - Hubert, B.

AU - Kauristie, K.

AU - Amm, O.

AU - Milan, S. E.

AU - Grocott, A.

AU - Cowley, S. W. H.

AU - Pulkkinen, T. I.

N1 - Copyright 2007 by the American Geophysical Union.

PY - 2007/8/9

Y1 - 2007/8/9

N2 - On 7 December 2000 at 2200 UT an auroral streamer was observed to develop above Scandinavia with the IMAGE-FUV global imagers. The ionospheric equivalent current deduced from the MIRACLE-IMAGE Scandinavian ground-based network of magnetometers is typical of a substorm-time streamer. Observations of the proton aurora using the SI12 imager onboard the IMAGE satellite are combined with measurements of the ionospheric convection obtained by the SuperDARN radar network to compute the dayside merging and nightside flux closure rates. On the basis of this and other similar events, it is found that auroral streamers appear during the period of most intense flux closure in the magnetotail, most often shortly after substorm onset. The ionospheric convection velocity, as measured by SuperDARN, appears to be reduced in the vicinity of the streamer, suggesting de-coupling of magnetospheric and ionospheric plasma flows in the region of enhanced ionospheric conductance.

AB - On 7 December 2000 at 2200 UT an auroral streamer was observed to develop above Scandinavia with the IMAGE-FUV global imagers. The ionospheric equivalent current deduced from the MIRACLE-IMAGE Scandinavian ground-based network of magnetometers is typical of a substorm-time streamer. Observations of the proton aurora using the SI12 imager onboard the IMAGE satellite are combined with measurements of the ionospheric convection obtained by the SuperDARN radar network to compute the dayside merging and nightside flux closure rates. On the basis of this and other similar events, it is found that auroral streamers appear during the period of most intense flux closure in the magnetotail, most often shortly after substorm onset. The ionospheric convection velocity, as measured by SuperDARN, appears to be reduced in the vicinity of the streamer, suggesting de-coupling of magnetospheric and ionospheric plasma flows in the region of enhanced ionospheric conductance.

KW - streamer

KW - flux closure

KW - BBF

U2 - 10.1029/2007GL030580

DO - 10.1029/2007GL030580

M3 - Journal article

VL - 34

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 15

M1 - L15105

ER -