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  • Hubert2008a

    Rights statement: Copyright 2008 by the American Geophysical Union.

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Open magnetic flux and magnetic flux closure during sawtooth events

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Open magnetic flux and magnetic flux closure during sawtooth events. / Hubert, B.; Milan, S. E.; Grocott, A. et al.
In: Geophysical Research Letters, Vol. 35, No. 23, L23301, 03.12.2008.

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

Harvard

Hubert, B, Milan, SE, Grocott, A, Cowley, SWH & Gérard, JC 2008, 'Open magnetic flux and magnetic flux closure during sawtooth events', Geophysical Research Letters, vol. 35, no. 23, L23301. https://doi.org/10.1029/2008GL036374

APA

Hubert, B., Milan, S. E., Grocott, A., Cowley, S. W. H., & Gérard, J. C. (2008). Open magnetic flux and magnetic flux closure during sawtooth events. Geophysical Research Letters, 35(23), Article L23301. https://doi.org/10.1029/2008GL036374

Vancouver

Hubert B, Milan SE, Grocott A, Cowley SWH, Gérard JC. Open magnetic flux and magnetic flux closure during sawtooth events. Geophysical Research Letters. 2008 Dec 3;35(23):L23301. doi: 10.1029/2008GL036374

Author

Hubert, B. ; Milan, S. E. ; Grocott, A. et al. / Open magnetic flux and magnetic flux closure during sawtooth events. In: Geophysical Research Letters. 2008 ; Vol. 35, No. 23.

Bibtex

@article{90136362a8a6458084e2381e6b2ee7e7,
title = "Open magnetic flux and magnetic flux closure during sawtooth events",
abstract = "We use IMAGE-FUV observations of the polar aurora and measurements of the ionospheric convection from the SuperDARN radar network to study several sawtooth events previously reported in the literature. We estimate the amount of open magnetic flux in the Earth magnetosphere during a significant part of these sawtooth intervals as well as the magnetic flux opening and closure rates, that is, the dayside and nightside reconnection rates. We find that during the sawtooth intervals the magnetosphere is highly loaded with open flux as a result of the strongly southward IMF carried by the solar wind during these intervals. The magnetosphere tries to relax to a less loaded configuration through a sequence of substorm expansions. However, these substorms do not necessarily evolve to their end before reintensification of nightside reconnection occurs in response to continued loading of the magnetosphere on the dayside.",
keywords = "sawtooth, reconnection, magnetosphere",
author = "B. Hubert and Milan, {S. E.} and A. Grocott and Cowley, {S. W. H.} and G{\'e}rard, {J. C.}",
note = "Copyright 2008 by the American Geophysical Union.",
year = "2008",
month = dec,
day = "3",
doi = "10.1029/2008GL036374",
language = "English",
volume = "35",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd",
number = "23",

}

RIS

TY - JOUR

T1 - Open magnetic flux and magnetic flux closure during sawtooth events

AU - Hubert, B.

AU - Milan, S. E.

AU - Grocott, A.

AU - Cowley, S. W. H.

AU - Gérard, J. C.

N1 - Copyright 2008 by the American Geophysical Union.

PY - 2008/12/3

Y1 - 2008/12/3

N2 - We use IMAGE-FUV observations of the polar aurora and measurements of the ionospheric convection from the SuperDARN radar network to study several sawtooth events previously reported in the literature. We estimate the amount of open magnetic flux in the Earth magnetosphere during a significant part of these sawtooth intervals as well as the magnetic flux opening and closure rates, that is, the dayside and nightside reconnection rates. We find that during the sawtooth intervals the magnetosphere is highly loaded with open flux as a result of the strongly southward IMF carried by the solar wind during these intervals. The magnetosphere tries to relax to a less loaded configuration through a sequence of substorm expansions. However, these substorms do not necessarily evolve to their end before reintensification of nightside reconnection occurs in response to continued loading of the magnetosphere on the dayside.

AB - We use IMAGE-FUV observations of the polar aurora and measurements of the ionospheric convection from the SuperDARN radar network to study several sawtooth events previously reported in the literature. We estimate the amount of open magnetic flux in the Earth magnetosphere during a significant part of these sawtooth intervals as well as the magnetic flux opening and closure rates, that is, the dayside and nightside reconnection rates. We find that during the sawtooth intervals the magnetosphere is highly loaded with open flux as a result of the strongly southward IMF carried by the solar wind during these intervals. The magnetosphere tries to relax to a less loaded configuration through a sequence of substorm expansions. However, these substorms do not necessarily evolve to their end before reintensification of nightside reconnection occurs in response to continued loading of the magnetosphere on the dayside.

KW - sawtooth

KW - reconnection

KW - magnetosphere

U2 - 10.1029/2008GL036374

DO - 10.1029/2008GL036374

M3 - Journal article

VL - 35

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 23

M1 - L23301

ER -