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On IMF By-induced dawn-dusk asymmetries in earthward convective fast flows
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-5681-0366
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-2043-4442
Space and Plasma Physics, EES, KTH, Stockholm, Sweden.
Swedish Institute of Space Physics, Kiruna, Sweden.ORCID iD: 0000-0002-7787-2160
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2017 (English)In: Dawn-dusk asymmetries in planetary plasma environments / [ed] Stein Haaland, Andrei Runov, Colin Forsyth, American Geophysical Union (AGU), 2017, 1st, p. 95-106Chapter in book (Refereed)
Abstract [en]

Studies of earthward plasma and magnetic field transport in the Earth’s magnetotail plasma sheet have shown that, on the average, Earthward ion flows in the premidnight and midnight sectors exhibit a duskward component while flows in the postmidnight sector are dawnward. The flow pattern is more pronounced for slower flows (<100 km/s) and alters gradually to a more symmetric one with respect to midnight for increasing flow speeds. However, recent ionospheric and magnetospheric studies have suggested that a nonzero By component in the interplanetary magnetic field (IMF) may significantly influence the earthward transport, creating previously unnoticed dawn‐dusk asymmetries between the hemispheres. In this article, we give a short overview of the present understanding of the topic, present new results, and briefly discuss the importance of the IMF By component for the Earthward transport processes in the magnetotail plasma sheet.

Place, publisher, year, edition, pages
American Geophysical Union (AGU), 2017, 1st. p. 95-106
Series
Geophysical Monograph Series ; 230
National Category
Fusion, Plasma and Space Physics
Research subject
Space Physics
Identifiers
URN: urn:nbn:se:umu:diva-154303ISBN: 978-1-119-21632-2 (print)OAI: oai:DiVA.org:umu-154303DiVA, id: diva2:1271037
Funder
Swedish National Space Board, 77/14Available from: 2018-12-15 Created: 2018-12-15 Last updated: 2018-12-15

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Pitkänen, TimoHamrin, Maria

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CiteExportLink to record
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