Steady plumes in viscously stratified, vigorously convecting, three-dimensional numerical mantle convection models with mobile plates
نویسندگان
چکیده
منابع مشابه
Steady plumes produced by downwellings in Earth-like vigor spherical whole mantle convection models
[1] If mantle thermal upwellings (plumes) are the cause of volcanic ‘‘hot spots,’’ then observations suggest that plumes are relatively fixed with nonuniform distribution and limited lifetimes. To date, fixity of upwellings has only been shown in models of convection at either low-vigor or with layering, though studies where the lower mantle has high viscosity do frequently show upwellings with...
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Three-dimensional, spherical models of mantle convection in the earth reveal that upwelling cylindrical plumes and downwelling planar sheets are the primary features of mantle circulation. Thus, subduction zones and descending sheetlike slabs in the mantle are fundamental characteristics of thermal convection in a spherical shell and are not merely the consequences of the rigidity of the slabs,...
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ژورنال
عنوان ژورنال: Geochemistry, Geophysics, Geosystems
سال: 2004
ISSN: 1525-2027
DOI: 10.1029/2003gc000583