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Extremely Distant Magnetopause Locations Caused by Magnetosheath Jets
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SYSNO ASEP 0580522 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Extremely Distant Magnetopause Locations Caused by Magnetosheath Jets Author(s) Němeček, Z. (CZ)
Šafránková, J. (CZ)
Grygorov, K. (CZ)
Mokrý, A. (CZ)
Pi, G. (CZ)
Nafchi, M. A. (CZ)
Němec, F. (CZ)
Xirogiannopoulou, N. (CZ)
Šimůnek, Jiří (UFA-U) RID, ORCIDNumber of authors 9 Article number e2023GL106131 Source Title Geophysical Research Letters. - : Wiley - ISSN 0094-8276
Roč. 50, č. 24 (2023)Number of pages 9 s. Language eng - English Country US - United States Keywords interplanetary magnetic field ; magnetopause ; magnetosheath jets ; solar wind Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Method of publishing Open access Institutional support UFA-U - RVO:68378289 UT WOS 001127489700001 EID SCOPUS 85180371776 DOI 10.1029/2023GL106131 Annotation Magnetopause position is controlled mainly by the solar wind dynamic pressure and north-south interplanetary magnetic field component and these quantities are included in different empirical magnetopause models. We have collected about 50,000 of dayside magnetopause crossings observed by THEMIS in course of 2007–2019 and compared the observed magnetopause position with model prediction. The difference between observed and predicted magnetopause radial distance, Robs − Rmod is used for quantifying the model-observation agreement. Its median values are well predicted for cases up to Robs ≈ 12 RE for all models but higher positive deviations are found for larger magnetopause distances, mainly under a nearly radial field and low dynamic pressure. The analysis reveals their connection with transient magnetopause displacements caused by strong sunward flows in the magnetosheath. We discuss the possible origin of the observed magnetosheath flow switching in terms of the interaction of magnetosheath jets with 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 2024 Electronic address https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL106131
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