Steady state, secondary convection beneath lithospheric plates with temperature- and pressure-dependent viscosity.

L. Fleitout, D. A. Yuen

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

Presents a thermomechanical model for upper mantle convection such that the thickness and structure of the lithosphere are determined self-consistently by the heat transported by convection. In this study of the interaction between the lithosphere and upper mantle, strongly temperature- and pressure-dependent rheologies for both Newtonian and non-Newtonian creep mechanisms are employed. Evaluating the geophysically relevant observables, such as topography, free air gravity anomalies, surface heat flow, and stress fields in the lithosphere, we find that the lateral variations of these quantities predicted by a non-Newtonian rheology are much smaller than those derived frm a linear rheology. These results suggest that surface variations of geophysical observables are more compatible with a non-Newtonian rheology in the upper mantle. -from Authors

Original languageEnglish (US)
Pages (from-to)9227-9244
Number of pages18
JournalJournal of Geophysical Research
Volume89
Issue numberB11
DOIs
StatePublished - Jan 1 1984

Fingerprint

Dive into the research topics of 'Steady state, secondary convection beneath lithospheric plates with temperature- and pressure-dependent viscosity.'. Together they form a unique fingerprint.

Cite this