On the choice of boundary conditions in continuum models of continental deformation

Shimon Wdowinski, R. J. O'Connell

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We examine the differences between continuum models that keep velocity boundary conditions (b.c.) constant with time and models that keep stress b.c. constant with time and demonstrate these differences by using a simple example of a continental lithosphere that is subjected to horizontal compression. Our results show that in the case of constant stress b.c., the indentation velocity decreases with time, while in the case of constant velocity b.c., the indentation velocity remains constant with time. Observations from the Tibetan plateau and from the Andes indicate that the rate of indentation decreases with time. This suggests that when buoyancy forces are comparable in magnitude to tectonic forces, constant stress b.c. are more appropriate for time evolutionary models of continental lithosphere. -from Authors

Original languageEnglish (US)
Pages (from-to)2413-2416
Number of pages4
JournalGeophysical Research Letters
Volume17
Issue number13
StatePublished - 1990
Externally publishedYes

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boundary condition
boundary conditions
continuums
indentation
continental lithosphere
lithosphere
buoyancy
tectonics
plateaus
compression
plateau

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

On the choice of boundary conditions in continuum models of continental deformation. / Wdowinski, Shimon; O'Connell, R. J.

In: Geophysical Research Letters, Vol. 17, No. 13, 1990, p. 2413-2416.

Research output: Contribution to journalArticle

Wdowinski, Shimon ; O'Connell, R. J. / On the choice of boundary conditions in continuum models of continental deformation. In: Geophysical Research Letters. 1990 ; Vol. 17, No. 13. pp. 2413-2416.
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