CaltechAUTHORS
  A Caltech Library Service

Effects of an Endothermic Phase-Transition at 670 km Depth in a Spherical Model of Convection in the Earth’s Mantle

Tackley, Paul J. and Stevenson, David J. and Glatzmaier, Gary A. and Schubert, Gerald (1993) Effects of an Endothermic Phase-Transition at 670 km Depth in a Spherical Model of Convection in the Earth’s Mantle. Nature, 361 (6414). pp. 699-704. ISSN 0028-0836. https://resolver.caltech.edu/CaltechAUTHORS:20131119-133429121

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20131119-133429121

Abstract

Numerical modelling of mantle convection in a spherical shell with an endothermic phase change at 670 km depth reveals an inherently three-dimensional flow pattern, containing cylindrical plumes and linear sheets which behave differently in their ability to penetrate the phase change. The dynamics are dominated by accumulation of downwelling cold material above 670 km depth, resulting in frequent avalanches of upper-mantle material into the lower mantle. This process generates long-wavelength lateral heterogeneity, helping to resolve the contradiction between seismic tomographic observations and expectations from mantle convection simulations.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://www.nature.com/nature/journal/v361/n6414/abs/361699a0.htmlPublisherArticle
http://dx.doi.org/doi:10.1038/361699a0DOIArticle
ORCID:
AuthorORCID
Stevenson, David J.0000-0001-9432-7159
Additional Information:© 1993 Nature Publishing Group. Published 25 February 1993; Received 30 November 1992; accepted 29 January 1993. We thank W.R. Peltier, D.L. Anderson, D.A. Yuen, M. Gurnis, V. Solomatov and the participants of the Los Alamos Mantle Convection Workshop for discussions, U. Christensen for his review and H.X. Qian for photographic assistance. The Intel Touchstone Delta System was operated by the California Institute of Technology on behalf of the Concurrent Supercomputing Consortium. Access to this facility was provided by the Institute. P.T. thanks the NSF for financial support.
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Issue or Number:6414
Record Number:CaltechAUTHORS:20131119-133429121
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20131119-133429121
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42575
Collection:CaltechAUTHORS
Deposited By: John Wade
Deposited On:19 Nov 2013 23:34
Last Modified:03 Oct 2019 05:59

Repository Staff Only: item control page