Trench-parallel flow and seismic anisotropy in the Mariana and Andean subduction systems
dc.contributor.author | Kneller, Erik A. | en_US |
dc.contributor.author | van Keken, Peter E. | en_US |
dc.date.accessioned | 2009-06-01T17:26:06Z | |
dc.date.available | 2009-06-01T17:26:06Z | |
dc.date.issued | 2007-12-20 | en_US |
dc.identifier.citation | Kneller, Erik A.; van Keken, Peter E.. (2007) "Trench-parallel flow and seismic anisotropy in the Mariana and Andean subduction systems." Nature 450(7173): 1222-U6. <http://hdl.handle.net/2027.42/62601> | en_US |
dc.identifier.issn | 0028-0836 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/62601 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=18097407&dopt=citation | en_US |
dc.description.abstract | Shear- wave splitting measurements above the mantle wedge of the Mariana(1) and southern Andean(2,3) subduction zones show trench-parallel seismically fast directions close to the trench and abrupt rotations to trench- perpendicular anisotropy in the back arc. These patterns of seismic anisotropy may be caused by three-dimensional flow associated with along- strike variations in slab geometry(1-5). The Mariana and Andean subduction systems are associated with the largest along- strike variations of slab geometry observed on Earth(6,7) and are ideal for testing the link between slab geometry and solid- state creep processes in the mantle. Here we show, with fully three- dimensional non- newtonian subduction zone models, that the strong curvature of the Mariana slab and the transition to shallow slab dip in the Southern Andes give rise to strong trench- parallel stretching in the warm- arc and warm- back-arc mantle and to abrupt rotations in stretching directions that are accompanied by strong trench- parallel stretching. These models show that the patterns of shear- wave splitting observed in the Mariana and southern Andean systems may be caused by significant three- dimensional flow induced by along- strike variations in slab geometry. | en_US |
dc.format.extent | 453408 bytes | |
dc.format.extent | 2489 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Nature Publishing Group | en_US |
dc.source | Nature | en_US |
dc.title | Trench-parallel flow and seismic anisotropy in the Mariana and Andean subduction systems | en_US |
dc.type | Article | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA | en_US |
dc.identifier.pmid | 18097407 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/62601/1/nature06429.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1038/nature06429 | en_US |
dc.identifier.source | Nature | en_US |
dc.contributor.authoremail | ekneller@umich.edu | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.