Equatorward propagating auroral arcs driven by ULF wave activity: Multipoint ground- and space-based observations in the dusk sector auroral oval

Baddeley, L. J.; Lorentzen, D. A.; Partamies, N.; Denig, M.; Pilipenko, V. A.; Oksavik, K.; Chen, X.; Zhang, Y.

doi:10.1002/2016ja023427

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Equatorward propagating auroral arcs driven by ULF wave activity: Multipoint ground- and space-based observations in the dusk sector auroral oval

2017
By Baddeley, L. J. ; Lorentzen, D. A. ; Partamies, N. ; ...
Source: Journal of Geophysical Research: Space Physics, 122(5), 5591-5605

[PDF-2.04 MB]

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Journal Title:

Journal of Geophysical Research: Space Physics
Personal Author:

Baddeley, L. J. ; Lorentzen, D. A. ; Partamies, N. ; Denig, M. ; Pilipenko, V. A. ; ... More +

Baddeley, L. J. ; Lorentzen, D. A. ; Partamies, N. ; Denig, M. ; Pilipenko, V. A. ; Oksavik, K. ; Chen, X. ; Zhang, Y. Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) Less -
Description:

Observations of multiple equatorward propagating arcs driven by a resonant Alfvén wave on closed ﬁeld lines are presented. Data sets from the European Incoherent Scatter Svalbard Radar (ESR) and Meridian Scanning Photometer in Longyearbyen, All-Sky Camera in Ny Ålesund, ground magnetometer datain Svalbard, and Defense Meteorological Satellite Program (DMSP) F16 satellite were utilized to study the arc structures. The arcs had an equatorward phase propagation of ~0.46 km s /C01and were observed in the dusk ionosphere from 1800 to 2030 magnetic local time. Analysis of the optical data indicates that the Alfvénwave had a frequency of 1.63 mHz and an azimuthal wave number, m~/C020 (the negative sign indicating a westward propagation). Inverted-V electron populations associated with ﬁeld-aligned currents of between
Keywords:

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Geophysics Space And Planetary Science
Source:

Journal of Geophysical Research: Space Physics, 122(5), 5591-5605
DOI:

https://doi.org/10.1002/2016ja023427
ISSN:

2169-9380
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PDF
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American Geophysical Union (AGU)
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Journal Article
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urn:sha256:42e2c9ae6e2a716af030586768e9c600030458174f1a82429cb43bdb2f2c50fb
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https://repository.library.noaa.gov/view/noaa/52522/noaa_52522_DS1.pdf
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