Finite element convection models: comparison of shallow and deep mantle convection, and temperatures in the mantle
Item
Title (Dublin Core)
en-US
Finite element convection models: comparison of shallow and deep mantle convection, and temperatures in the mantle
Description (Dublin Core)
en-US
A Finite Element Method for solving the convection problem in a fluid with position-dependent Newtonian viscosity is developed, using bicubic and biquadratic spline functions on a rectangular grid. Introducing weak (less viscous) zones at the active margins of the lithosphere, dynamical mantle convection models are established which have a nearly uniform surface (plate) velocity and a satisfactory heat flux profile. A comparison of upper and deep mantle convection shows:— a moderate increase of viscosity with depth cannot confine the flow to the upper mantle;— in shallow depth convection models the temperature is too low inside the cell, but deep mantle convection models yield satisfactory temperatures for the upper mantle.For that reason deep (or whole) mantle convection should be the favored hypothesis.
ARK: https://n2t.net/ark:/88439/y025744
Permalink: https://geophysicsjournal.com/article/202
ARK: https://n2t.net/ark:/88439/y025744
Permalink: https://geophysicsjournal.com/article/202
Creator (Dublin Core)
Kopitzke, U.
Subject (Dublin Core)
en-US
Mantle convection
en-US
Finite element method
en-US
Mantle geotherm
en-US
Geodynamics
Publisher (Dublin Core)
en-US
Journal of Geophysics
Date (Dublin Core)
1979-04-26
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Peer-reviewed Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/202
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 46 No 1 (1979): Journal of Geophysics; 97-121
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/202/162