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  • Yamazaki and Kosch_2015

    Rights statement: ©2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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The equatorial electrojet during geomagnetic storms and substorms

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The equatorial electrojet during geomagnetic storms and substorms. / Yamazaki (YY), Yosuke; Kosch, Michael.

In: Journal of Geophysical Research: Space Physics, Vol. 120, No. 3, 03.2015, p. 2276-2287.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Yamazaki (YY), Y & Kosch, M 2015, 'The equatorial electrojet during geomagnetic storms and substorms', Journal of Geophysical Research: Space Physics, vol. 120, no. 3, pp. 2276-2287. https://doi.org/10.1002/2014JA020773

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Yamazaki (YY), Yosuke ; Kosch, Michael. / The equatorial electrojet during geomagnetic storms and substorms. In: Journal of Geophysical Research: Space Physics. 2015 ; Vol. 120, No. 3. pp. 2276-2287.

Bibtex

@article{b1c780481d5249ca89134846ebc6aea5,
title = "The equatorial electrojet during geomagnetic storms and substorms",
abstract = "The climatology of the equatorial electrojet during periods of enhanced geomagnetic activity is examined using long-term records of ground-based magnetometers in the Indian and Peruvian regions. Equatorial electrojet perturbations due to geomagnetic storms and substorms are evaluated using the disturbance storm time (Dst) index and auroral electrojet (AE) index, respectively. The response of the equatorial electrojet to rapid changes in the AE index indicates effects of both prompt penetration electric field and disturbance dynamo electric field, consistent with previous studies based on F region equatorial vertical plasma drift measurements at Jicamarca. The average response of the equatorial electrojet to geomagnetic storms (Dst<−50 nT) reveals persistent disturbances during the recovery phase, which can last for approximately 24 h after the Dst index reaches its minimum value. This “after-storm” effect is found to depend on the magnitude of the storm, solar EUV activity, season, and longitude.",
keywords = "equatorial electrojet, ionospheric currents, geomagnetic storms, prompt penetration electric field, disturbance dynamo electric field, ground-based magnetometers",
author = "{Yamazaki (YY)}, Yosuke and Michael Kosch",
note = "{\textcopyright}2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. ",
year = "2015",
month = mar,
doi = "10.1002/2014JA020773",
language = "English",
volume = "120",
pages = "2276--2287",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "3",

}

RIS

TY - JOUR

T1 - The equatorial electrojet during geomagnetic storms and substorms

AU - Yamazaki (YY), Yosuke

AU - Kosch, Michael

N1 - ©2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

PY - 2015/3

Y1 - 2015/3

N2 - The climatology of the equatorial electrojet during periods of enhanced geomagnetic activity is examined using long-term records of ground-based magnetometers in the Indian and Peruvian regions. Equatorial electrojet perturbations due to geomagnetic storms and substorms are evaluated using the disturbance storm time (Dst) index and auroral electrojet (AE) index, respectively. The response of the equatorial electrojet to rapid changes in the AE index indicates effects of both prompt penetration electric field and disturbance dynamo electric field, consistent with previous studies based on F region equatorial vertical plasma drift measurements at Jicamarca. The average response of the equatorial electrojet to geomagnetic storms (Dst<−50 nT) reveals persistent disturbances during the recovery phase, which can last for approximately 24 h after the Dst index reaches its minimum value. This “after-storm” effect is found to depend on the magnitude of the storm, solar EUV activity, season, and longitude.

AB - The climatology of the equatorial electrojet during periods of enhanced geomagnetic activity is examined using long-term records of ground-based magnetometers in the Indian and Peruvian regions. Equatorial electrojet perturbations due to geomagnetic storms and substorms are evaluated using the disturbance storm time (Dst) index and auroral electrojet (AE) index, respectively. The response of the equatorial electrojet to rapid changes in the AE index indicates effects of both prompt penetration electric field and disturbance dynamo electric field, consistent with previous studies based on F region equatorial vertical plasma drift measurements at Jicamarca. The average response of the equatorial electrojet to geomagnetic storms (Dst<−50 nT) reveals persistent disturbances during the recovery phase, which can last for approximately 24 h after the Dst index reaches its minimum value. This “after-storm” effect is found to depend on the magnitude of the storm, solar EUV activity, season, and longitude.

KW - equatorial electrojet

KW - ionospheric currents

KW - geomagnetic storms

KW - prompt penetration electric field

KW - disturbance dynamo electric field

KW - ground-based magnetometers

U2 - 10.1002/2014JA020773

DO - 10.1002/2014JA020773

M3 - Journal article

VL - 120

SP - 2276

EP - 2287

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 3

ER -