Small-scale dynamic aurora
Small-scale dynamic aurora
Small-scale dynamic auroras have spatial scales of a few km or less, and temporal scales of a few seconds or less, which visualize the complex interplay among charged particles, Alfvén waves, and plasma instabilities working in the magnetosphere-ionosphere coupled regions. We summarize the observed properties of flickering auroras, vortex motions, and filamentary structures. We also summarize the development of fundamental theories, such as dispersive Alfvén waves (DAWs), plasma instabilities in the auroral acceleration region, ionospheric feedback instabilities (IFI), and the ionospheric Alfvén resonator (IAR).
Auroral breakup, Auroral phenomena, Dispersive Alfven waves, Flickering aurora, Ionospheric Alfven resonator, Ionospheric feedback instabilities, Magnetosphere-ionosphere coupled region
Kataoka, Ryuho
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Chaston, Chris
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Knudsen, David
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Lynch, Kristina
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Lysak, Robert
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Song, Yan
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Rankin, Robert
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Murase, Kiyoka
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Sakanoi, Takeshi
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Semeter, Joshua
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Watanabe, Tomo-Hiko
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Whiter, Daniel
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1 February 2021
Kataoka, Ryuho
450a2b7e-f15d-4896-ae05-66b61e3a4850
Chaston, Chris
5b777cf2-49b7-4c63-83a5-fc81a6888bcb
Knudsen, David
de051fff-3963-4f4a-9b3d-432b0892d247
Lynch, Kristina
dee3f69d-b684-4147-8619-4820bdafd35b
Lysak, Robert
4b56f2d8-619e-4366-b2b9-f904171cec97
Song, Yan
c261a15d-3f22-4e82-9f82-4d9f266b5e5d
Rankin, Robert
addc7824-0ff3-4d86-b53e-cb592d83566b
Murase, Kiyoka
235d5dcd-d4c1-4a78-80cb-a3cf351d56c0
Sakanoi, Takeshi
e91c7e2d-2cc4-4dd5-b7ad-8127800d2099
Semeter, Joshua
8d764c19-fab1-442f-bfeb-6739867d51fe
Watanabe, Tomo-Hiko
7b77546c-48dc-420f-8d99-951d68403b21
Whiter, Daniel
9a30d7b6-ea41-44fb-bd52-3ff1964eca5c
Kataoka, Ryuho, Chaston, Chris, Knudsen, David, Lynch, Kristina, Lysak, Robert, Song, Yan, Rankin, Robert, Murase, Kiyoka, Sakanoi, Takeshi, Semeter, Joshua, Watanabe, Tomo-Hiko and Whiter, Daniel
(2021)
Small-scale dynamic aurora.
Space Science Reviews, 217 (1), [17].
(doi:10.1007/s11214-021-00796-w).
Abstract
Small-scale dynamic auroras have spatial scales of a few km or less, and temporal scales of a few seconds or less, which visualize the complex interplay among charged particles, Alfvén waves, and plasma instabilities working in the magnetosphere-ionosphere coupled regions. We summarize the observed properties of flickering auroras, vortex motions, and filamentary structures. We also summarize the development of fundamental theories, such as dispersive Alfvén waves (DAWs), plasma instabilities in the auroral acceleration region, ionospheric feedback instabilities (IFI), and the ionospheric Alfvén resonator (IAR).
Text
smallscaledynamicaurora20201112final
- Accepted Manuscript
More information
Accepted/In Press date: 13 January 2021
Published date: 1 February 2021
Additional Information:
Funding Information:
The work of RK was supported by JSPS Kakenhi (25302006, 15H02628, 16H06286). C.C. Chaston was supported by ISSI and through NASA grant NNX17AI55G. T.-H. Watanabe was supported by ISSI and by JSPS KAKENHI Grant Number JP16H04086 and JP17H01177. D.K. Whiter was supported by ISSI and NERC (UK) through grant NE/S015167/1. Movies 4, 6 and 7 are from the ASK instrument which has been funded by PPARC, STFC (PP/C502614/1) and NERC (NE/H024433/1, NE/N004051/1) of the United Kingdom and Vetenskapsrådet of Sweden. The authors wish to thank the International Space Science Institute ISSI-Bern for organization of this review and for financial support of the team meeting.
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature.
Keywords:
Auroral breakup, Auroral phenomena, Dispersive Alfven waves, Flickering aurora, Ionospheric Alfven resonator, Ionospheric feedback instabilities, Magnetosphere-ionosphere coupled region
Identifiers
Local EPrints ID: 447521
URI: http://eprints.soton.ac.uk/id/eprint/447521
ISSN: 0038-6308
PURE UUID: fdbb7d3b-33c2-4fe0-a6af-8b3f79ed8451
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Date deposited: 15 Mar 2021 17:31
Last modified: 17 Mar 2024 06:19
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Contributors
Author:
Ryuho Kataoka
Author:
Chris Chaston
Author:
David Knudsen
Author:
Kristina Lynch
Author:
Robert Lysak
Author:
Yan Song
Author:
Robert Rankin
Author:
Kiyoka Murase
Author:
Takeshi Sakanoi
Author:
Joshua Semeter
Author:
Tomo-Hiko Watanabe
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