Browsing by Subject "D" LAYER"

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  • Influence of continents and lithospheric plates on the shape of d" layer and the spatial distribution of mantle plumes 
    Trubitsyn V.P.; Evseev M.N.; Trubitsyn A.P. (Федеральное государственное бюджетное учреждение науки Геофизический центр Российской академии наук, 2015)
    The regularities of the global intraplate volcanism of the Earth are explained by the mantle plumes originating at the heads and margins of two piles of dense material of the hot and relatively heavy $D''$~layer at the ...
  • IS THERE A FIRST-ORDER DISCONTINUITY IN THE LOWERMOST MANTLE? 
    Liu X.F.; Tromp J.; Dziewonski A.M. (1998)
    In 1983, Lay and Helmberger [Geophys. J. R. Astron. Soc. 75 (1983) 799-837] reported the detection of a precursor to the seismic phase ScS. They attributed this precursor to a sharp seismic discontinuity located several ...
  • VALENCE STATE AND SPIN TRANSITIONS OF IRON IN EARTH'S MANTLE SILICATES 
    Zhang F.; Oganov A.R. (2006)
    Using ab initio simulations, we investigated the valence and spin states of iron impurities in the perovskite (Pv) and post-perovskite (PPv) polymorphs of MgSiO3. In agreement with the previous experimental work, we find ...