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dc.contributor.author
Kennedy, Joseph H.
dc.contributor.author
Pettit, Erin C.
dc.contributor.author
Di Prinzio, Carlos Leonardo
dc.date.available
2017-09-22T20:26:24Z
dc.date.issued
2013-04
dc.identifier.citation
Kennedy, Joseph H.; Pettit, Erin C.; Di Prinzio, Carlos Leonardo; The evolution of crystal fabric in ice sheets and its link to climate history; Cambridge University Press; Journal Of Glaciology; 59; 214; 4-2013; 357-373
dc.identifier.issn
0022-1430
dc.identifier.uri
http://hdl.handle.net/11336/25001
dc.description.abstract
The evolution of preferred crystal-orientation fabrics is strongly sensitive to the initial fabric and texture. A perturbation in climate can induce variations in fabric and texture in the firn. Feedbacks between fabric evolution and ice deformation can enhance these variations through time and depth in an ice sheet. We model the evolution of fabric under vertical uniaxial-compression and pureshear regimes typical of ice divides. Using an analytic anisotropic flow law applied to an aggregate of distinct ice crystals, the model evolves the fabric and includes parameterizations of crystal growth, polygonization and migration recrystallization. Stress and temperature history drive the fabric evolution. Using this model, we explore the evolution of a subtle variation in near-surface fabric using both constant applied stress and a stress–temperature history based on data from Taylor Dome, East Antarctica. Our model suggests that a subtle variation in fabric caused by climate perturbations will be preserved through time and depth in an ice sheet. The stress history and polygonization rate primarily control the magnitude of the preserved climate signal. These results offer the possibility of extracting information about past climate directly from ice fabrics.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ice Cores
dc.subject
Fabric
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Modelling
dc.subject.classification
Oceanografía, Hidrología, Recursos Hídricos
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
The evolution of crystal fabric in ice sheets and its link to climate history
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-08-09T14:25:29Z
dc.journal.volume
59
dc.journal.number
214
dc.journal.pagination
357-373
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Kennedy, Joseph H.. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Pettit, Erin C.. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Di Prinzio, Carlos Leonardo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
dc.journal.title
Journal Of Glaciology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3189/2013JoG12J159
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-glaciology/article/evolution-of-crystal-fabric-in-ice-sheets-and-its-link-to-climate-history/A1E7BE5CE2F4CCB2D32D6C9AC4CB6053
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