Steve: The Optical Signature of Intense Subauroral Ion Drifts

Steve : The Optical Signature of Intense Subauroral Ion Drifts

Archer, W. E. (author): Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK, Canada

Gallardo-Lacourt, B. (author): Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada

Perry, G. W. (author): Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada;New Jersey Inst Technol, Ctr Solar Terr Res, Newark, NJ 07102 USA

St-Maurice, J. P. (author): Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK, Canada;Univ Western Ontario, Dept Phys & Astron, London, ON, Canada

Buchert, Stephan (author): Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Univ Western Ontario, Dept Phys & Astron, London, ON, Canada

(creator_code:org_t)

AMER GEOPHYSICAL UNION, 2019
2019
English.
In: Geophysical Research Letters. - : AMER GEOPHYSICAL UNION. - 0094-8276 .- 1944-8007. ; 46:12, s. 6279-6286

Related links:: https://doi.org/10.1...; show more...; https://uu.diva-port... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

Little is currently known about the optical phenomenon known as Steve. The first scientific publication on the subject suggests that Steve is associated with an intense subauroral ion drift (SAID). However, additional inquiry is warranted as this suggested relationship as it is based on a single case study. Here we present eight occurrences of Steve with coincident or near-coincident measurements from the European Space Agency's Swarm satellites and show that Steve is consistently associated with SAID. When satellite observations coincident with Steve are compared to that of typical SAID, we find the SAID associated with Steve to have above average peak ion velocities and electron temperatures, as well as extremely low plasma densities.

By the author/editor: Archer, W. E.; Gallardo-Lacourt ...; Perry, G. W.; St-Maurice, J. P ...; Buchert, Stephan; Donovan, E.

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Geophysics

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