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The Dynamics of Plate Tectonics and Mantle Flow: From Local to Global Scales

Stadler, Georg and Gurnis, Michael and Burstedde, Carsten and Wilcox, Lucas C. and Alisic, Laura and Ghattas, Omar (2010) The Dynamics of Plate Tectonics and Mantle Flow: From Local to Global Scales. Science, 329 (5995). pp. 1033-1038. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20100907-113938114

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.1191223 DOIUNSPECIFIED
http://www.sciencemag.org/cgi/content/abstract/329/5995/1033PublisherUNSPECIFIED
Additional Information:© 2010 American Association for the Advancement of Science. Received 21 April 2010; accepted 14 July 2010. We thank W. Leng, T. Becker, and J.-P. Avouac for helpful comments on the manuscript. This work was partially supported by NSF’s PetaApps program (OCI-0749334 and OCI-0748898), NSF Earth Sciences (EAR-0426271 and EAR-0810303), U.S. Department of Energy Office of Science’s SciDAC program (DE-FC02-06ER25782 and DE-SC0002710), NSF grants CCF-0427985 and DMS-072474, and the Caltech Tectonics Observatory (by the Gordon and Betty Moore Foundation). Computing resources on Texas Advanced Computing Center’s Ranger and Spur systems were provided through the NSF TeraGrid under grant TG-MCA04N026.
Group:Caltech Tectonics Observatory, Seismological Laboratory
Funders:
Funding AgencyGrant Number
NSFOCI-0749334
NSFOCI-0748898
NSFCCF-0427985
NSFDMS-072474
NSF Earth Sciences EAR-0426271
NSF Earth Sciences EAR-0810303
U.S. Department of Energy Office of Science DE-FC02-06ER25782
U.S. Department of Energy Office of Science DE-SC0002710
Gordon and Betty Moore Foundation UNSPECIFIED
Computing resources on Texas Advanced Computing Center through the NSF TG-MCA04N026
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Other Numbering System NameOther Numbering System ID
Caltech Tectonics ObservatoryUNSPECIFIED
Record Number:CaltechAUTHORS:20100907-113938114
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20100907-113938114
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19802
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Sep 2010 20:43
Last Modified:11 Jun 2015 12:58

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