The evolution of crystal fabric in ice sheets and its link to climate history

Autores
Kennedy, Joseph H.; Pettit, Erin C.; Di Prinzio, Carlos Leonardo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Kennedy, Joseph H.. University Of Alaska; Estados Unidos
Fil: Pettit, Erin C.. University Of Alaska; Estados Unidos
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
Materia
Ice Cores
Fabric
Modelling
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/25001
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The evolution of crystal fabric in ice sheets and its link to climate historyKennedy, Joseph H.Pettit, Erin C.Di Prinzio, Carlos LeonardoIce CoresFabricModellinghttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The 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.Fil: Kennedy, Joseph H.. University Of Alaska; Estados UnidosFil: Pettit, Erin C.. University Of Alaska; Estados UnidosFil: 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; ArgentinaCambridge University Press2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25001Kennedy, 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; 357-3730022-1430CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3189/2013JoG12J159info: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/A1E7BE5CE2F4CCB2D32D6C9AC4CB6053info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:46Zoai:ri.conicet.gov.ar:11336/25001instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:03:47.171CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The evolution of crystal fabric in ice sheets and its link to climate history
title The evolution of crystal fabric in ice sheets and its link to climate history
spellingShingle The evolution of crystal fabric in ice sheets and its link to climate history
Kennedy, Joseph H.
Ice Cores
Fabric
Modelling
title_short The evolution of crystal fabric in ice sheets and its link to climate history
title_full The evolution of crystal fabric in ice sheets and its link to climate history
title_fullStr The evolution of crystal fabric in ice sheets and its link to climate history
title_full_unstemmed The evolution of crystal fabric in ice sheets and its link to climate history
title_sort The evolution of crystal fabric in ice sheets and its link to climate history
dc.creator.none.fl_str_mv Kennedy, Joseph H.
Pettit, Erin C.
Di Prinzio, Carlos Leonardo
author Kennedy, Joseph H.
author_facet Kennedy, Joseph H.
Pettit, Erin C.
Di Prinzio, Carlos Leonardo
author_role author
author2 Pettit, Erin C.
Di Prinzio, Carlos Leonardo
author2_role author
author
dc.subject.none.fl_str_mv Ice Cores
Fabric
Modelling
topic Ice Cores
Fabric
Modelling
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Kennedy, Joseph H.. University Of Alaska; Estados Unidos
Fil: Pettit, Erin C.. University Of Alaska; Estados Unidos
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
description 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.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/25001
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
0022-1430
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25001
identifier_str_mv 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
0022-1430
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3189/2013JoG12J159
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
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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