The dynamics of plate tectonics and mantle flow: From local to global scales

Georg Stadler, Michael Gurnis, Carsten Burstedde, Lucas C. Wilcox, Laura Alisic, Omar Ghattas

Research output: Contribution to journalArticlepeer-review

Abstract

Plate tectonics is regulated by driving and resisting forces concentrated at plate boundaries, but observationally constrained high-resolution models of global mantle flow remain a computational challenge. We capitalized on advances in adaptive mesh refinement algorithms on parallel computers to simulate global mantle flow by incorporating plate motions, with individual plate margins resolved down to a scale of 1 kilometer. Back-arc extension and slab rollback are emergent consequences of slab descent in the upper mantle. Cold thermal anomalies within the lower mantle couple into oceanic plates through narrow high-viscosity slabs, altering the velocity of oceanic plates. Viscous dissipation within the bending lithosphere at trenches amounts to ∼5 to 20% of the total dissipation through the entire lithosphere and mantle.

Original languageEnglish (US)
Pages (from-to)1033-1038
Number of pages6
JournalScience
Volume329
Issue number5995
DOIs
StatePublished - Aug 27 2010

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'The dynamics of plate tectonics and mantle flow: From local to global scales'. Together they form a unique fingerprint.

Cite this