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  • Timescales for the penetration of IMF By into the Earth's magnetosphere

    Rights statement: Accepted for publication in Journal of Geophysical Research Space Physics. Copyright 2016 American Geophysical Union. Further reproduction or electronic distribution is not permitted.

    Accepted author manuscript, 2.16 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

  • Browett_et_al-2017-Journal_of_Geophysical_Research-_Space_Physics

    Rights statement: ©2016. American Geophysical Union. All Rights Reserved

    Final published version, 2.1 MB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

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Timescales for the penetration of IMF By into the Earth’s magnetotail

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Timescales for the penetration of IMF By into the Earth’s magnetotail. / Browett, Stephen; Fear, R.C.; Grocott, Adrian et al.
In: Journal of Geophysical Research: Space Physics, Vol. 122, No. 1, 01.2017, p. 579-593.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Browett, S, Fear, RC, Grocott, A & Milan, SE 2017, 'Timescales for the penetration of IMF By into the Earth’s magnetotail', Journal of Geophysical Research: Space Physics, vol. 122, no. 1, pp. 579-593. https://doi.org/10.1002/2016JA023198

APA

Browett, S., Fear, R. C., Grocott, A., & Milan, S. E. (2017). Timescales for the penetration of IMF By into the Earth’s magnetotail. Journal of Geophysical Research: Space Physics, 122(1), 579-593. https://doi.org/10.1002/2016JA023198

Vancouver

Browett S, Fear RC, Grocott A, Milan SE. Timescales for the penetration of IMF By into the Earth’s magnetotail. Journal of Geophysical Research: Space Physics. 2017 Jan;122(1):579-593. Epub 2016 Nov 22. doi: 10.1002/2016JA023198

Author

Browett, Stephen ; Fear, R.C. ; Grocott, Adrian et al. / Timescales for the penetration of IMF By into the Earth’s magnetotail. In: Journal of Geophysical Research: Space Physics. 2017 ; Vol. 122, No. 1. pp. 579-593.

Bibtex

@article{12c43d7111eb4667a2a66b4f498c8168,
title = "Timescales for the penetration of IMF By into the Earth{\textquoteright}s magnetotail",
abstract = "Previous studies have shown that there is a correlation between the By component of the interplanetary magnetic field (IMF) and the By component observed in the magnetotail lobe and in the plasma sheet. However, studies of the effect of IMF By on several magnetospheric processes have indicated that the By component in the tail should depend more strongly on the recent history of the IMF By rather than on the simultaneous measurements of the IMF. Estimates of this timescale vary from ∼25 min to ∼4 h. We present a statistical study of how promptly the IMF By component is transferred into the neutral sheet, based on Cluster observations of the neutral sheet from 2001 to 2008, and solar wind data from the OMNI database. Five thousand nine hundred eighty-two neutral sheet crossings during this interval were identified, and starting with the correlation between instantaneous measurements of the IMF and the magnetotail (recently reported by Cao et al. (2014)), we vary the time delay applied to the solar wind data. Our results suggest a bimodal distribution with peaks at ∼1.5 and ∼3 h. The relative strength of each peak appears to be well controlled by the sign of the IMF Bz component with peaks being observed at 1 h of lag time for southward IMF and up to 5 h for northward IMF conditions, and the magnitude of the solar wind velocity with peaks at 2 h of lag time for fast solar wind and 4 h for slow solar wind conditions.",
author = "Stephen Browett and R.C. Fear and Adrian Grocott and Milan, {S. E.}",
note = "Accepted for publication in Journal of Geophysical Research Space Physics. Copyright 2016 American Geophysical Union. Further reproduction or electronic distribution is not permitted.",
year = "2017",
month = jan,
doi = "10.1002/2016JA023198",
language = "English",
volume = "122",
pages = "579--593",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - Timescales for the penetration of IMF By into the Earth’s magnetotail

AU - Browett, Stephen

AU - Fear, R.C.

AU - Grocott, Adrian

AU - Milan, S. E.

N1 - Accepted for publication in Journal of Geophysical Research Space Physics. Copyright 2016 American Geophysical Union. Further reproduction or electronic distribution is not permitted.

PY - 2017/1

Y1 - 2017/1

N2 - Previous studies have shown that there is a correlation between the By component of the interplanetary magnetic field (IMF) and the By component observed in the magnetotail lobe and in the plasma sheet. However, studies of the effect of IMF By on several magnetospheric processes have indicated that the By component in the tail should depend more strongly on the recent history of the IMF By rather than on the simultaneous measurements of the IMF. Estimates of this timescale vary from ∼25 min to ∼4 h. We present a statistical study of how promptly the IMF By component is transferred into the neutral sheet, based on Cluster observations of the neutral sheet from 2001 to 2008, and solar wind data from the OMNI database. Five thousand nine hundred eighty-two neutral sheet crossings during this interval were identified, and starting with the correlation between instantaneous measurements of the IMF and the magnetotail (recently reported by Cao et al. (2014)), we vary the time delay applied to the solar wind data. Our results suggest a bimodal distribution with peaks at ∼1.5 and ∼3 h. The relative strength of each peak appears to be well controlled by the sign of the IMF Bz component with peaks being observed at 1 h of lag time for southward IMF and up to 5 h for northward IMF conditions, and the magnitude of the solar wind velocity with peaks at 2 h of lag time for fast solar wind and 4 h for slow solar wind conditions.

AB - Previous studies have shown that there is a correlation between the By component of the interplanetary magnetic field (IMF) and the By component observed in the magnetotail lobe and in the plasma sheet. However, studies of the effect of IMF By on several magnetospheric processes have indicated that the By component in the tail should depend more strongly on the recent history of the IMF By rather than on the simultaneous measurements of the IMF. Estimates of this timescale vary from ∼25 min to ∼4 h. We present a statistical study of how promptly the IMF By component is transferred into the neutral sheet, based on Cluster observations of the neutral sheet from 2001 to 2008, and solar wind data from the OMNI database. Five thousand nine hundred eighty-two neutral sheet crossings during this interval were identified, and starting with the correlation between instantaneous measurements of the IMF and the magnetotail (recently reported by Cao et al. (2014)), we vary the time delay applied to the solar wind data. Our results suggest a bimodal distribution with peaks at ∼1.5 and ∼3 h. The relative strength of each peak appears to be well controlled by the sign of the IMF Bz component with peaks being observed at 1 h of lag time for southward IMF and up to 5 h for northward IMF conditions, and the magnitude of the solar wind velocity with peaks at 2 h of lag time for fast solar wind and 4 h for slow solar wind conditions.

U2 - 10.1002/2016JA023198

DO - 10.1002/2016JA023198

M3 - Journal article

VL - 122

SP - 579

EP - 593

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 1

ER -