Home > Research > Publications & Outputs > Are steady magnetospheric convection events pro...

Electronic data

Links

Text available via DOI:

View graph of relations

Are steady magnetospheric convection events prolonged substorms?

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published

Standard

Are steady magnetospheric convection events prolonged substorms? / Walach, M. T.; Milan, S. E.
In: Journal of Geophysical Research: Space Physics, Vol. 120, No. 3, 03.2015, p. 1751-1758.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Walach, MT & Milan, SE 2015, 'Are steady magnetospheric convection events prolonged substorms?', Journal of Geophysical Research: Space Physics, vol. 120, no. 3, pp. 1751-1758. https://doi.org/10.1002/2014JA020631

APA

Walach, M. T., & Milan, S. E. (2015). Are steady magnetospheric convection events prolonged substorms? Journal of Geophysical Research: Space Physics, 120(3), 1751-1758. https://doi.org/10.1002/2014JA020631

Vancouver

Walach MT, Milan SE. Are steady magnetospheric convection events prolonged substorms? Journal of Geophysical Research: Space Physics. 2015 Mar;120(3):1751-1758. Epub 2015 Mar 12. doi: 10.1002/2014JA020631

Author

Walach, M. T. ; Milan, S. E. / Are steady magnetospheric convection events prolonged substorms?. In: Journal of Geophysical Research: Space Physics. 2015 ; Vol. 120, No. 3. pp. 1751-1758.

Bibtex

@article{129dc79002bb4c239c35e5eaf1d25045,
title = "Are steady magnetospheric convection events prolonged substorms?",
abstract = "Magnetospheric modes, including substorms, sawtooth events, and steady magnetospheric convection events, have in the past been described as different responses of the magnetosphere to coupling with the solar wind. Using previously determined event lists for sawtooth events, steady magnetospheric convection events, and substorms, we produce a statistical study of these event types to examine their similarities and behavior in terms of solar wind parameters, auroral brightness, open magnetospheric flux, and geomagnetic indices. A superposed epoch analysis shows that individual sawteeth show the same signatures as substorms but occur during more extreme cases of solar wind driving as well as geomagnetic activity. We also explore the limitations of current methods of identifying steady magnetospheric convection events and explain why some of those events are flagged inappropriately. We show that 58% of the steady magnetospheric convection events considered, as identified by criteria defined in previous studies are part of a prolonged version of substorms due to continued dayside driving during expansion phase. The remaining 42% are episodes of enhanced magnetospheric convection, occurring after extended periods of dayside driving.",
keywords = "Sawtooth events, Solar wind-magnetosphere coupling, Steady magnetospheric convection events, Substorms, Superposed epoch analysis",
author = "Walach, {M. T.} and Milan, {S. E.}",
year = "2015",
month = mar,
doi = "10.1002/2014JA020631",
language = "English",
volume = "120",
pages = "1751--1758",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9380",
publisher = "Blackwell Publishing Ltd",
number = "3",

}

RIS

TY - JOUR

T1 - Are steady magnetospheric convection events prolonged substorms?

AU - Walach, M. T.

AU - Milan, S. E.

PY - 2015/3

Y1 - 2015/3

N2 - Magnetospheric modes, including substorms, sawtooth events, and steady magnetospheric convection events, have in the past been described as different responses of the magnetosphere to coupling with the solar wind. Using previously determined event lists for sawtooth events, steady magnetospheric convection events, and substorms, we produce a statistical study of these event types to examine their similarities and behavior in terms of solar wind parameters, auroral brightness, open magnetospheric flux, and geomagnetic indices. A superposed epoch analysis shows that individual sawteeth show the same signatures as substorms but occur during more extreme cases of solar wind driving as well as geomagnetic activity. We also explore the limitations of current methods of identifying steady magnetospheric convection events and explain why some of those events are flagged inappropriately. We show that 58% of the steady magnetospheric convection events considered, as identified by criteria defined in previous studies are part of a prolonged version of substorms due to continued dayside driving during expansion phase. The remaining 42% are episodes of enhanced magnetospheric convection, occurring after extended periods of dayside driving.

AB - Magnetospheric modes, including substorms, sawtooth events, and steady magnetospheric convection events, have in the past been described as different responses of the magnetosphere to coupling with the solar wind. Using previously determined event lists for sawtooth events, steady magnetospheric convection events, and substorms, we produce a statistical study of these event types to examine their similarities and behavior in terms of solar wind parameters, auroral brightness, open magnetospheric flux, and geomagnetic indices. A superposed epoch analysis shows that individual sawteeth show the same signatures as substorms but occur during more extreme cases of solar wind driving as well as geomagnetic activity. We also explore the limitations of current methods of identifying steady magnetospheric convection events and explain why some of those events are flagged inappropriately. We show that 58% of the steady magnetospheric convection events considered, as identified by criteria defined in previous studies are part of a prolonged version of substorms due to continued dayside driving during expansion phase. The remaining 42% are episodes of enhanced magnetospheric convection, occurring after extended periods of dayside driving.

KW - Sawtooth events

KW - Solar wind-magnetosphere coupling

KW - Steady magnetospheric convection events

KW - Substorms

KW - Superposed epoch analysis

U2 - 10.1002/2014JA020631

DO - 10.1002/2014JA020631

M3 - Journal article

VL - 120

SP - 1751

EP - 1758

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9380

IS - 3

ER -