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Estimating along-track plasma drift speed from electron density measurements by the three Swarm satellites

  • Plasma convection in the high-latitude ionosphere provides important information about magnetosphere-ionosphere-thermosphere coupling. In this study we estimate the along-track component of plasma convection within and around the polar cap, using electron density profiles measured by the three Swarm satellites. The velocity values estimated from the two different satellite pairs agree with each other. In both hemispheres the estimated velocity is generally anti-sunward, especially for higher speeds. The obtained velocity is in qualitative agreement with Super Dual Auroral Radar Network data. Our method can supplement currently available instruments for ionospheric plasma velocity measurements, especially in cases where these traditional instruments suffer from their inherent limitations. Also, the method can be generalized to other satellite constellations carrying electron density probes.

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Author:J. Park, H. Luehr, Claudia StolleORCiDGND, G. Malhotra, J. B. H. Baker, S. Buchert, R. Gill
ISSN:0992-7689 (print)
ISSN:1432-0576 (online)
Parent Title (English):Annales geophysicae
Place of publication:Göttingen
Document Type:Article
Year of first Publication:2015
Year of Completion:2015
Release Date:2017/03/27
Tag:Ionosphere; Plasma convection
First Page:829
Last Page:835
Funder:European Space Agency (ESA) (ESA/ESTEC) [4000102140/10/NL/JA]; "Planetary system research for space exploration" project; KASI; Air Force Research Laboratory [FA2386-14-1-4004]; US National Science Foundation [AGS-1150879, ATM-0946900]
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften
Peer Review:Referiert
Publication Way:Open Access
Notes extern:Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 503