气候变化领域集成服务门户(CCPortal): Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents

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DOI	10.1029/2019GL086677
	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 Y.A.; Selivanov V.N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	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. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Geomagnetism; Ionosphere; Magnetosphere; Azimuthal direction; Defense Meteorological Satellite Programs; Geomagnetic effects; Geomagnetically induced currents; Magnetic local time; Magnetic variation; omega bands; Southern Hemisphere; Intercalation; aurora; electric field; electrodynamics; geomagnetic storm; geomagnetism; ionosphere; magnetometer; magnetosphere; satellite altimetry; Southern Hemisphere; spacecraft; Kola Peninsula; Murmansk [Russian Federation]; Russian Federation
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170543
作者单位	Earth's Physics Department, Saint Petersburg State University, St. Petersburg, Russian Federation; Institute of Physics of the Earth, Moscow, Russian Federation; Finnish Meteorological Institute, Helsinki, Finland; Polar Geophysical Institute, Apatity, Russian Federation; Kola Science Centre, Russian Academy of Sciences, Apatity, Russian Federation
推荐引用方式 GB/T 7714	Apatenkov S.V.,Pilipenko V.A.,Gordeev E.I.,et al. Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents[J],2020,47(6).
APA	Apatenkov S.V..,Pilipenko V.A..,Gordeev E.I..,Viljanen A..,Juusola L..,...&Selivanov V.N..(2020).Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents.Geophysical Research Letters,47(6).
MLA	Apatenkov S.V.,et al."Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents".Geophysical Research Letters 47.6(2020).