Steve: The Optical Signature of Intense Subauroral Ion Drifts

W. E. Archer; B. Gallardo-Lacourt; G. W. Perry; J. P. St.-Maurice; S. C. Buchert; E. Donovan

doi:10.1029/2019GL082687

Steve: The Optical Signature of Intense Subauroral Ion Drifts

W. E. Archer, B. Gallardo-Lacourt, G. W. Perry, J. P. St.-Maurice, S. C. Buchert, E. Donovan

Physics

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	6279-6286
Number of pages	8
Journal	Geophysical Research Letters
Volume	46
Issue number	12
DOIs	https://doi.org/10.1029/2019GL082687
State	Published - Jun 28 2019

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

Keywords

SAID
Steve
Swarm satellites
ionosphere

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10.1029/2019GL082687

Cite this

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title = "Steve: The Optical Signature of Intense Subauroral Ion Drifts",

abstract = "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.",

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AU - Archer, W. E.

AU - Gallardo-Lacourt, B.

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AU - Buchert, S. C.

AU - Donovan, E.

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AB - 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.

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Steve: The Optical Signature of Intense Subauroral Ion Drifts

Abstract

All Science Journal Classification (ASJC) codes

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