caa a22 4500 469104651 CHVBK 20180323133053.0 cr unu---uuuuu 170328e19920901xx s 000 0 eng 10.1007/BF01634787 doi (NATIONALLICENCE)springer-10.1007/BF01634787 Variational approach to modeling present-time mantle convection [Elektronische Daten] [O. Čadek, C. Matyska] Summary: An analogy of the Hellinger-Reissner functional for the Stokes problem is constructed and the way of determining its minimum by means of spherical harmonic vectors and tensors is described. The variational method is applied to a Newtonian mantle in which the body forces were estimated on the basis of global inversion of gravitational and topographic data. The method is then generalized to the case of a realistic rheology (power-law creep), and prospects of the generalised method are briefly discussed. Academia, Publishing House of the Czechoslovak Academy of Sciences, 1992 Čadek O. Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Prague aut Matyska C. Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Prague aut Studia Geophysica et Geodaetica Kluwer Academic Publishers 36/3(1992-09-01), 215-229 0039-3169 36:3<215 1992 36 11200 https://doi.org/10.1007/BF01634787 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01634787 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Čadek O. Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Prague aut NATIONALLICENCE 700 1- Matyska C. Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Prague aut NATIONALLICENCE 773 0- Studia Geophysica et Geodaetica Kluwer Academic Publishers 36/3(1992-09-01), 215-229 0039-3169 36:3<215 1992 36 11200 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer