Comparison of the SAR arc, STEVE and Picket fence dynamics registered at the Maimaga subauroral station on March 1, 2017

S. G. Parnikov; I. B. Ievenko; I. I. Koltovskoy

doi:10.1117/12.2603112

15 December 2021 Comparison of the SAR arc, STEVE and Picket fence dynamics registered at the Maimaga subauroral station on March 1, 2017

S. G. Parnikov, I. B. Ievenko, I. I. Koltovskoy

Author Affiliations +

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 119167L (2021) https://doi.org/10.1117/12.2603112
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

A hitherto unknown type of subauroral glow, discovered thanks to citizen scientists, literally excited the world of specialists in the field of aurora borealis. A narrow, elongated along the latitude ribbon of glow (tens of kilometers in the north-south direction and thousands of kilometers in the east-west direction), often accompanied by green formations in the form of a picket fence, which has a purple hue is called STEVE¹. The glow is caused by a strong thermal emission velocity enhance and is associated with extremely subauroral ionc drifts (SAID). In all likelihood, STEVE is closely related to the ionospheric-magnetospheric interaction and its full understanding will certainly complement the picture of this interaction. In this work, a comparison was made of the brightness and spatial characteristics of the Stable auroral red (SAR) arc, STEVE and the picket fence simultaneously registered at the Maimaga subauroral station on March 1, 2017. STEVE arose more polar than the pre-existing SAR arc ~ 40 minutes after the beginning of the substorm expansion phase. STEVE lasted ~ 1 hour. In the continuous emission spectrum was dominated the red emission [OI]. It is shown that STEVE and picket fence appeared on the same lines of force.

Citation Download Citation

S. G. Parnikov, I. B. Ievenko, and I. I. Koltovskoy "Comparison of the SAR arc, STEVE and Picket fence dynamics registered at the Maimaga subauroral station on March 1, 2017", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119167L (15 December 2021); https://doi.org/10.1117/12.2603112

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