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Inverse gradient of the magnetic field at the flank magnetopause
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SYSNO ASEP 0504219 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Inverse gradient of the magnetic field at the flank magnetopause Author(s) Šimůnek, Jiří (UFA-U) RID, ORCID
Němeček, Z. (CZ)
Šafránková, J. (CZ)
Grygorov, K. (CZ)
Pi, G. (CZ)Number of authors 5 Source Title Geophysical Research Abstracts, EGU General Assembly 2018, Vol. 21. - Göttingen : European Geosciences Union, 2019
EGU2019-8234Number of pages 1 s. Publication form Online - E Action EGU General Assembly 2019 Event date 07.04.2019 - 12.04.2019 VEvent location Vienna Country AT - Austria Event type WRD Language eng - English Country DE - Germany Keywords magnetopause ; magnetic field gradient ; THEMIS spacecraft Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) Institutional support UFA-U - RVO:68378289 Annotation Magnetic pressure inside the magnetopause is usually balanced with a sum of thermal plasma and magnetic pressures on the magnetosheath side. However, the THEMIS spacecraft encounter several times situations when the magnetosheath magnetic field is larger than that in the magnetosphere and thus the pressure from the magnetosheath side seems to be uncompensated. The northward pointing IMF leads to a creation of the plasma depletion layer or magnetic barrier characterized by the enhanced magnetic field and depressed plasma density just in front of the magnetopause but THEMIS observations reveal that a “magnetic barrier” can be created also under a strong southward IMF and that this structure of the boundary layer can persist for several hours. We present case studies as well as a small statistics and propose conditions and mechanisms which can lead to creation such "unbalanced" structure at the magnetopause. Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2020
Number of the records: 1