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dc.contributor.authorWhitehead, John A.  Concept link
dc.contributor.authorBehn, Mark D.  Concept link
dc.date.accessioned2015-08-05T17:52:40Z
dc.date.available2015-12-02T09:47:02Z
dc.date.issued2015-06-02
dc.identifier.citationGeophysical Research Letters 42 (2015): 4301-4308en_US
dc.identifier.urihttps://hdl.handle.net/1912/7449
dc.descriptionAuthor Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 42 (2015): 4301-4308, doi:10.1002/2015GL064480.en_US
dc.description.abstractContinents on Earth periodically assemble to form supercontinents and then break up again into smaller continental blocks (the Wilson cycle). Previous highly developed numerical models incorporate fixed continents while others indicate that continent movement modulates flow. Our simplified numerical model suggests that continental drift is fundamental. A thermally insulating continent is anchored at its center to mantle flow on an otherwise stress-free surface for infinite Prandtl number cellular convection with constant material properties. Rayleigh numbers exceed 107, while continent widths and chamber lengths approach Earth's values. The Wilson cycle is reproduced by a unique, rugged monopolar “continental drift convection cell.” Subduction occurs at the cell's upstream end with cold slabs dipping at an angle beneath the moving continent (as found in many continent/subduction regions on Earth). Drift enhances vertical heat transport up to 30%, especially at the core-mantle boundary, and greatly decreases lateral mantle temperature differences.en_US
dc.description.sponsorshipFunding was provided by NSF grants EAR-1010432 and EAR-1316333.en_US
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/msword
dc.format.mimetypevideo/mp4
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/2015GL064480
dc.subjectCellular convectionen_US
dc.subjectWilson cycleen_US
dc.subjectContinental driften_US
dc.subjectOscillationen_US
dc.subjectSubductionen_US
dc.titleThe continental drift convection cellen_US
dc.typeArticleen_US
dc.description.embargo2015-12-02en_US
dc.identifier.doi10.1002/2015GL064480


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