Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents. / Apatenkov, S. V.; Pilipenko, V. A.; Gordeev, E. I.; Viljanen, A.; Juusola, L.; Belakhovsky, V. B.; Sakharov, Ya A.; Selivanov, V. N.
в: Geophysical Research Letters, Том 47, № 6, e2019GL086677, 28.03.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents
AU - Apatenkov, S. V.
AU - Pilipenko, V. A.
AU - Gordeev, E. I.
AU - Viljanen, A.
AU - Juusola, L.
AU - Belakhovsky, V. B.
AU - Sakharov, Ya A.
AU - Selivanov, V. N.
PY - 2020/3/28
Y1 - 2020/3/28
N2 - The strongest event of geomagnetically induced currents (GIC) detected by the North-West Russian GIC network occurred during the main phase of the magnetic storm on 28 and 29 June 2013. Extremely high value, 120 A, was recorded in the 330 kV transformers on Kola Peninsula in the 04–07 magnetic local time (MLT) sector. The Defense Meteorological Satellite Program (DMSP) spacecraft took a sequence of ultraviolet (UV) auroral images in the southern hemisphere and observed multiple omega bands. The ionospheric equivalent electric currents based on the International Monitor for Auroral Geomagnetic Effects (IMAGE) magnetometer network reveal a sequence of current vortex pairs moving eastward with the speed of 0.5–2.5 km/s that fits to the electrodynamics scheme of omega bands. Although the temporal variations of the associated current system are slow, the omega bands can be responsible for strong magnetic variations and GIC due to fast propagations of currents in the azimuthal direction.
AB - The strongest event of geomagnetically induced currents (GIC) detected by the North-West Russian GIC network occurred during the main phase of the magnetic storm on 28 and 29 June 2013. Extremely high value, 120 A, was recorded in the 330 kV transformers on Kola Peninsula in the 04–07 magnetic local time (MLT) sector. The Defense Meteorological Satellite Program (DMSP) spacecraft took a sequence of ultraviolet (UV) auroral images in the southern hemisphere and observed multiple omega bands. The ionospheric equivalent electric currents based on the International Monitor for Auroral Geomagnetic Effects (IMAGE) magnetometer network reveal a sequence of current vortex pairs moving eastward with the speed of 0.5–2.5 km/s that fits to the electrodynamics scheme of omega bands. Although the temporal variations of the associated current system are slow, the omega bands can be responsible for strong magnetic variations and GIC due to fast propagations of currents in the azimuthal direction.
KW - geomagnetically induces currents
KW - ionosphere
KW - magnetosphere
KW - omega bands
KW - MAGNETIC-FIELDS
KW - SUBSTORMS
KW - STEADY MAGNETOSPHERIC CONVECTION
KW - PULSATIONS
UR - http://www.scopus.com/inward/record.url?scp=85082530171&partnerID=8YFLogxK
U2 - 10.1029/2019GL086677
DO - 10.1029/2019GL086677
M3 - Article
AN - SCOPUS:85082530171
VL - 47
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 6
M1 - e2019GL086677
ER -
ID: 53520590