Open AccessA numerical study for convection in a cylindrical model with continuously varying viscosity
Author(s) -
F. Fanucci,
Antonella Megna,
Stefano Santini,
F. Vetrano
Publication year - 1996
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-3986
Subject(s) - convection , asthenosphere , viscosity , mechanics , mantle convection , geology , thermal , representation (politics) , constant (computer programming) , geophysics , symmetry (geometry) , physics , thermodynamics , mathematics , geometry , computer science , lithosphere , paleontology , politics , political science , law , tectonics , programming language
In the framework of a cylindrical symmetry model for convective motions in the asthenosphere, a new profile for the viscosity coefficient depending on depth is suggested here. The numerical elaboration of the above mentioned model leads to interesting results which fit well with experimental observations. In particular these continuously varying viscosity solutions probably describe the convective motions within the Earth better than simple constant viscosity solutions. Consequently the temperature values seem to be a realistic representation of the possible thermal behaviour in the upper mantle