Иркутск, Россия
Иркутск, Россия
Иркутск, Россия
Иркутск, Россия
Иркутск, Россия
Иркутск, Россия
Иркутск, Россия
We study the spatiotemporal dynamics of mid-latitude aurora from observations in the south of Eastern Siberia during St. Patrick’s severe geomagnetic storm on March 17, 2015. We perform a morphological analysis of characteristics of the observed auroras. A preliminary conclusion is drawn that the analyzed event is the result of the manifestation of mid-latitude auroras of two types (type “d” and SAR arc) and ordinary aurora observed at the northern horizon. The maximum intensity of the dominant emission [OI] at 630.0 nm (~14 kR) allows this mid-latitude aurora to be attributed to the extreme auroras occurring in mid-latitudes, which is second only to the November 20, 2003 superstorm (~19 kR).
geomagnetic storm, mid-latitude aurora, spectrum of mid-latitude aurora, 557.7 and 630.0 nm emissions
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