Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model

Autores
Lange, H.; Casassa, G.; Ivins, E. R.; Schroeder, L.; Fritsche, M.; Richter, Andreas Jorg; Groh, A.; Dietrich, R.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Thirty‒one GPS geodetic measurements of crustal uplift in southernmost South America determined extraordinarily high trend rates (> 35 mm/yr) in the north‒central part of the Southern Patagonian Icefield. These trends have a coherent pattern, motivating a refined viscoelastic glacial isostatic adjustment model to explain the observations. Two end‒member models provide good fits: both require a lithospheric thickness of 36.5 ± 5.3 km. However, one end‒member has a mantle viscosity near η =1.6 ×1018 Pa s and an ice collapse rate from the Little Ice Age (LIA) maximum comparable to a lowest recent estimate of 1995–2012 ice loss at about −11 Gt/yr. In contrast, the other end‒member has much larger viscosity: η = 8.0 ×1018 Pa s, half the post–LIA collapse rate, and a steadily rising loss rate in the twentieth century after AD 1943, reaching −25.9 Gt/yr during 1995–2012.
Fil: Lange, H.. Technische Universitaet Dresden; Alemania
Fil: Casassa, G.. Centro de Estudios Cientificos; Chile. Universidad de Magallanes; Chile
Fil: Ivins, E. R.. Institute of Technology. Jet propulsion Laboratory; Estados Unidos
Fil: Schroeder, L.. Technische Universitaet Dresden; Alemania
Fil: Fritsche, M.. Technische Universitaet Dresden; Alemania
Fil: Richter, Andreas Jorg. Technische Universitaet Dresden; Alemania. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Astrometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Groh, A.. Technische Universitaet Dresden; Alemania
Fil: Dietrich, R.. Technische Universitaet Dresden; Alemania
Materia
crustal uplift
Earth model
glacial isostatic adjustment
Southern Patagonian Icefield
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:11336/31153
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/31153
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth modelLange, H.Casassa, G.Ivins, E. R.Schroeder, L.Fritsche, M.Richter, Andreas JorgGroh, A.Dietrich, R.crustal upliftEarth modelglacial isostatic adjustmentSouthern Patagonian Icefieldhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Thirty‒one GPS geodetic measurements of crustal uplift in southernmost South America determined extraordinarily high trend rates (> 35 mm/yr) in the north‒central part of the Southern Patagonian Icefield. These trends have a coherent pattern, motivating a refined viscoelastic glacial isostatic adjustment model to explain the observations. Two end‒member models provide good fits: both require a lithospheric thickness of 36.5 ± 5.3 km. However, one end‒member has a mantle viscosity near η =1.6 ×1018 Pa s and an ice collapse rate from the Little Ice Age (LIA) maximum comparable to a lowest recent estimate of 1995–2012 ice loss at about −11 Gt/yr. In contrast, the other end‒member has much larger viscosity: η = 8.0 ×1018 Pa s, half the post–LIA collapse rate, and a steadily rising loss rate in the twentieth century after AD 1943, reaching −25.9 Gt/yr during 1995–2012.Fil: Lange, H.. Technische Universitaet Dresden; AlemaniaFil: Casassa, G.. Centro de Estudios Cientificos; Chile. Universidad de Magallanes; ChileFil: Ivins, E. R.. Institute of Technology. Jet propulsion Laboratory; Estados UnidosFil: Schroeder, L.. Technische Universitaet Dresden; AlemaniaFil: Fritsche, M.. Technische Universitaet Dresden; AlemaniaFil: Richter, Andreas Jorg. Technische Universitaet Dresden; Alemania. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Astrometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Groh, A.. Technische Universitaet Dresden; AlemaniaFil: Dietrich, R.. Technische Universitaet Dresden; AlemaniaAmerican Geophysical Union2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31153Dietrich, R.; Groh, A.; Richter, Andreas Jorg; Fritsche, M.; Schroeder, L.; Ivins, E. R.; et al.; Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model; American Geophysical Union; Geophysical Research Letters; 41; 3; 2-2014; 805-8120094-8276CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/2013GL058419info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2013GL058419/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:09Zoai:ri.conicet.gov.ar:11336/31153instacron: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:34982025-09-29 09:50:09.46CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
title Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
spellingShingle Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
Lange, H.
crustal uplift
Earth model
glacial isostatic adjustment
Southern Patagonian Icefield
title_short Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
title_full Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
title_fullStr Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
title_full_unstemmed Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
title_sort Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
dc.creator.none.fl_str_mv Lange, H.
Casassa, G.
Ivins, E. R.
Schroeder, L.
Fritsche, M.
Richter, Andreas Jorg
Groh, A.
Dietrich, R.
author Lange, H.
author_facet Lange, H.
Casassa, G.
Ivins, E. R.
Schroeder, L.
Fritsche, M.
Richter, Andreas Jorg
Groh, A.
Dietrich, R.
author_role author
author2 Casassa, G.
Ivins, E. R.
Schroeder, L.
Fritsche, M.
Richter, Andreas Jorg
Groh, A.
Dietrich, R.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv crustal uplift
Earth model
glacial isostatic adjustment
Southern Patagonian Icefield
topic crustal uplift
Earth model
glacial isostatic adjustment
Southern Patagonian Icefield
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Thirty‒one GPS geodetic measurements of crustal uplift in southernmost South America determined extraordinarily high trend rates (> 35 mm/yr) in the north‒central part of the Southern Patagonian Icefield. These trends have a coherent pattern, motivating a refined viscoelastic glacial isostatic adjustment model to explain the observations. Two end‒member models provide good fits: both require a lithospheric thickness of 36.5 ± 5.3 km. However, one end‒member has a mantle viscosity near η =1.6 ×1018 Pa s and an ice collapse rate from the Little Ice Age (LIA) maximum comparable to a lowest recent estimate of 1995–2012 ice loss at about −11 Gt/yr. In contrast, the other end‒member has much larger viscosity: η = 8.0 ×1018 Pa s, half the post–LIA collapse rate, and a steadily rising loss rate in the twentieth century after AD 1943, reaching −25.9 Gt/yr during 1995–2012.
Fil: Lange, H.. Technische Universitaet Dresden; Alemania
Fil: Casassa, G.. Centro de Estudios Cientificos; Chile. Universidad de Magallanes; Chile
Fil: Ivins, E. R.. Institute of Technology. Jet propulsion Laboratory; Estados Unidos
Fil: Schroeder, L.. Technische Universitaet Dresden; Alemania
Fil: Fritsche, M.. Technische Universitaet Dresden; Alemania
Fil: Richter, Andreas Jorg. Technische Universitaet Dresden; Alemania. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Astrometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Groh, A.. Technische Universitaet Dresden; Alemania
Fil: Dietrich, R.. Technische Universitaet Dresden; Alemania
description Thirty‒one GPS geodetic measurements of crustal uplift in southernmost South America determined extraordinarily high trend rates (> 35 mm/yr) in the north‒central part of the Southern Patagonian Icefield. These trends have a coherent pattern, motivating a refined viscoelastic glacial isostatic adjustment model to explain the observations. Two end‒member models provide good fits: both require a lithospheric thickness of 36.5 ± 5.3 km. However, one end‒member has a mantle viscosity near η =1.6 ×1018 Pa s and an ice collapse rate from the Little Ice Age (LIA) maximum comparable to a lowest recent estimate of 1995–2012 ice loss at about −11 Gt/yr. In contrast, the other end‒member has much larger viscosity: η = 8.0 ×1018 Pa s, half the post–LIA collapse rate, and a steadily rising loss rate in the twentieth century after AD 1943, reaching −25.9 Gt/yr during 1995–2012.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
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/11336/31153
Dietrich, R.; Groh, A.; Richter, Andreas Jorg; Fritsche, M.; Schroeder, L.; Ivins, E. R.; et al.; Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model; American Geophysical Union; Geophysical Research Letters; 41; 3; 2-2014; 805-812
0094-8276
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31153
identifier_str_mv Dietrich, R.; Groh, A.; Richter, Andreas Jorg; Fritsche, M.; Schroeder, L.; Ivins, E. R.; et al.; Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model; American Geophysical Union; Geophysical Research Letters; 41; 3; 2-2014; 805-812
0094-8276
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/2013GL058419
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2013GL058419/abstract
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 American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
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
_version_ 1844613547373363200
score 13.070432

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