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Do we know the actual magnetopause position for typical solar wind conditions?
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SYSNO ASEP 0464314 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Do we know the actual magnetopause position for typical solar wind conditions? Tvůrce(i) Samsonov, A. A. (RU)
Gordeev, E. (RU)
Tsyganenko, N. A. (RU)
Šafránková, J. (CZ)
Němeček, Z. (CZ)
Šimůnek, Jiří (UFA-U) RID, ORCID
Sibeck, D. G. (US)
Toth, G. (US)
Merkin, V. G. (US)
Raeder, J. (US)Zdroj.dok. Journal of Geophysical Research-Space Physics. - : Wiley - ISSN 2169-9380
Roč. 121, č. 7 (2016), s. 6493-6508Poč.str. 16 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova magnetopause ; MHD modeling Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP GA14-19376S GA ČR - Grantová agentura ČR Institucionální podpora UFA-U - RVO:68378289 UT WOS 000383422100032 EID SCOPUS 84990237916 DOI 10.1002/2016JA022471 Anotace We compare predicted magnetopause positions at the subsolar point and four reference points in the terminator plane obtained from several empirical and numerical MHD models. Empirical models using various sets of magnetopause crossings and making different assumptions about the magnetopause shape predict significantly different magnetopause positions (with a scatter >1R(E)) even at the subsolar point. Axisymmetric magnetopause models cannot reproduce the cusp indentations or the changes related to the dipole tilt effect, and most of them predict the magnetopause closer to the Earth than nonaxisymmetric models for typical solar wind conditions and zero tilt angle. Predictions of two global nonaxisymmetric models do not match each other, and the models need additional verification. MHD models often predict the magnetopause closer to the Earth than the nonaxisymmetric empirical models, but the predictions of MHD simulations may need corrections for the ring current effect and decreases of the solar wind pressure that occur in the foreshock. Comparing MHD models in which the ring current magnetic field is taken into account with the empirical Lin et al. model, we find that the differences in the reference point positions predicted by these models are relatively small for B-z=0. Therefore, we assume that these predictions indicate the actual magnetopause position, but future investigations are still needed. Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2017
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