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Earth's core convection: Boussinesq approximation or incompressible approach?
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SYSNO ASEP 0341124 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Earth's core convection: Boussinesq approximation or incompressible approach? Tvůrce(i) Anufriev, A. P. (BG)
Hejda, Pavel (GFU-E) ORCID, RIDZdroj.dok. Geophysical and Astrophysical Fluid Dynamics. - : Taylor & Francis - ISSN 0309-1929
Roč. 104, č. 1 (2010), s. 65-83Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova geodynamic models ; core convection ; Boussinesq approximation Vědní obor RIV DE - Zemský magnetismus, geodézie, geografie CEP IAA300120704 GA AV ČR - Akademie věd CEZ AV0Z30120515 - GFU-E (2005-2011) UT WOS 000277504800003 DOI 10.1080/03091920903517863 Anotace Most geodynamo models are based on the Boussinesq approximation that simplifies the mathematics of the problem by neglecting the compressibility of the liquid in the Earth's core. However, the Boussinesq approximation not only disregards the compressibility in the momentum and the continuity equations, but also neglects adiabatic cooling in the heat transport equation which is connected with the reference state temperature distribution T (r). Whereas the former simplification introduces an acceptable inaccuracy, the latter changes the scene in a substantial way and makes the Boussinesq approximation nonadequate for the problem, especially at the onset of the convection. Pracoviště Geofyzikální ústav Kontakt Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Rok sběru 2011
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