A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase

Autores
Geiger, Alessa; Smedley, Rachel; García, Juan Luis; Rodríguez, Paulo Cesar; Herrera, Gastón; Ferri Hidalgo, Lidia; Veloso, Mario; Gazis, Iason Zois; Bertrand, Sebastien
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Presently a strong correlation exists between southern westerly wind (SWW) strength and precipitation west of the Patagonian Andes (r=0.8; Garreaud et al., 2013). As a result glacier chronologies west of the Andean divide are capable of recording local to hemispheric palaeoclimatic shifts during the late Quaternary better than their eastern counterparts. The aim of the #ChileFjords18 project is to develop a detailed understanding of glacier expansion and manner of recession of intermittently marine terminating outlet glaciers to unravel the interplay between glaciological, climatic and oceanographic forcing during the last glacial-deglacial phase in south-western Patagonia. To reach this aim, we conducted a field-expedition in November 2018, where we combined geomorphic mapping techniques (terrestrial and marine) and geochronological methods to constrain glacier geometry changes of two major outlet glaciers (Icy and Xaltegua) between the Gran Campo Nevado and Pacific Ocean (52°S, 72-74°W). High-resolution terrestrial and marine geomorphic mapping is integrated to understand sub- and marginal glacier dynamics. Cosmogenic surface exposure dating of bedrock and erratics is used to establish vertical and horizontal retreat rates of the former Icy and Xaltegua outlet glaciers. Given the hyper-humid setting in the south-western fjords of Chile (Kilian & Lamy, 2012), we also apply a novel approach to determine sample-specific weathering rates by combining cosmogenic and optically stimulated luminescence techniques (Sohbati et al., 2012; Lehmann et al., 2018). The latter is relevant to assess impact of weathering rates on final cosmogenic surface exposure ages. By using a multi-method approach we hope to provide high-resolution empirical data for integration and testing of regional to global glacier-climate models spanning the last glacier termination.
Fil: Geiger, Alessa. Pontificia Universidad Católica de Chile; Chile. University of Glasgow; Reino Unido
Fil: Smedley, Rachel. University of Liverpool; Reino Unido
Fil: García, Juan Luis. Pontificia Universidad Católica de Chile; Chile
Fil: Rodríguez, Paulo Cesar. Universidad de Magallanes; Chile
Fil: Herrera, Gastón. Universidad de Magallanes; Chile
Fil: Ferri Hidalgo, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Veloso, Mario. Universidad Andrés Bello; Chile
Fil: Gazis, Iason Zois. Geomar-Helmholtz Centre for Ocean Research Kiel; Alemania
Fil: Bertrand, Sebastien. University of Ghent; Bélgica
20th Congress of the International Union for Quaternary Research
Dublin
Irlanda
International Union for Quaternary Research
Materia
Glacier chronologies
Last glacial-deglacial phase
Cosmogenic
OSL
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:11336/273266
Acceder
id CONICETDig_ebfeaa13bdb133f507e306da025bfae4
oai_identifier_str oai:ri.conicet.gov.ar:11336/273266
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phaseGeiger, AlessaSmedley, RachelGarcía, Juan LuisRodríguez, Paulo CesarHerrera, GastónFerri Hidalgo, LidiaVeloso, MarioGazis, Iason ZoisBertrand, SebastienGlacier chronologiesLast glacial-deglacial phaseCosmogenicOSLhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Presently a strong correlation exists between southern westerly wind (SWW) strength and precipitation west of the Patagonian Andes (r=0.8; Garreaud et al., 2013). As a result glacier chronologies west of the Andean divide are capable of recording local to hemispheric palaeoclimatic shifts during the late Quaternary better than their eastern counterparts. The aim of the #ChileFjords18 project is to develop a detailed understanding of glacier expansion and manner of recession of intermittently marine terminating outlet glaciers to unravel the interplay between glaciological, climatic and oceanographic forcing during the last glacial-deglacial phase in south-western Patagonia. To reach this aim, we conducted a field-expedition in November 2018, where we combined geomorphic mapping techniques (terrestrial and marine) and geochronological methods to constrain glacier geometry changes of two major outlet glaciers (Icy and Xaltegua) between the Gran Campo Nevado and Pacific Ocean (52°S, 72-74°W). High-resolution terrestrial and marine geomorphic mapping is integrated to understand sub- and marginal glacier dynamics. Cosmogenic surface exposure dating of bedrock and erratics is used to establish vertical and horizontal retreat rates of the former Icy and Xaltegua outlet glaciers. Given the hyper-humid setting in the south-western fjords of Chile (Kilian & Lamy, 2012), we also apply a novel approach to determine sample-specific weathering rates by combining cosmogenic and optically stimulated luminescence techniques (Sohbati et al., 2012; Lehmann et al., 2018). The latter is relevant to assess impact of weathering rates on final cosmogenic surface exposure ages. By using a multi-method approach we hope to provide high-resolution empirical data for integration and testing of regional to global glacier-climate models spanning the last glacier termination.Fil: Geiger, Alessa. Pontificia Universidad Católica de Chile; Chile. University of Glasgow; Reino UnidoFil: Smedley, Rachel. University of Liverpool; Reino UnidoFil: García, Juan Luis. Pontificia Universidad Católica de Chile; ChileFil: Rodríguez, Paulo Cesar. Universidad de Magallanes; ChileFil: Herrera, Gastón. Universidad de Magallanes; ChileFil: Ferri Hidalgo, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Veloso, Mario. Universidad Andrés Bello; ChileFil: Gazis, Iason Zois. Geomar-Helmholtz Centre for Ocean Research Kiel; AlemaniaFil: Bertrand, Sebastien. University of Ghent; Bélgica20th Congress of the International Union for Quaternary ResearchDublinIrlandaInternational Union for Quaternary ResearchInternational Union for Quaternary Research2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/273266A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase; 20th Congress of the International Union for Quaternary Research; Dublin; Irlanda; 2019; 529 - 530CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iqua.ie/wp-content/uploads/2020/02/INQUA-2019-Abstract-book.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:47:58Zoai:ri.conicet.gov.ar:11336/273266instacron: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:34982025-10-15 14:47:58.963CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
title A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
spellingShingle A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
Geiger, Alessa
Glacier chronologies
Last glacial-deglacial phase
Cosmogenic
OSL
title_short A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
title_full A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
title_fullStr A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
title_full_unstemmed A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
title_sort A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase
dc.creator.none.fl_str_mv Geiger, Alessa
Smedley, Rachel
García, Juan Luis
Rodríguez, Paulo Cesar
Herrera, Gastón
Ferri Hidalgo, Lidia
Veloso, Mario
Gazis, Iason Zois
Bertrand, Sebastien
author Geiger, Alessa
author_facet Geiger, Alessa
Smedley, Rachel
García, Juan Luis
Rodríguez, Paulo Cesar
Herrera, Gastón
Ferri Hidalgo, Lidia
Veloso, Mario
Gazis, Iason Zois
Bertrand, Sebastien
author_role author
author2 Smedley, Rachel
García, Juan Luis
Rodríguez, Paulo Cesar
Herrera, Gastón
Ferri Hidalgo, Lidia
Veloso, Mario
Gazis, Iason Zois
Bertrand, Sebastien
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Glacier chronologies
Last glacial-deglacial phase
Cosmogenic
OSL
topic Glacier chronologies
Last glacial-deglacial phase
Cosmogenic
OSL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Presently a strong correlation exists between southern westerly wind (SWW) strength and precipitation west of the Patagonian Andes (r=0.8; Garreaud et al., 2013). As a result glacier chronologies west of the Andean divide are capable of recording local to hemispheric palaeoclimatic shifts during the late Quaternary better than their eastern counterparts. The aim of the #ChileFjords18 project is to develop a detailed understanding of glacier expansion and manner of recession of intermittently marine terminating outlet glaciers to unravel the interplay between glaciological, climatic and oceanographic forcing during the last glacial-deglacial phase in south-western Patagonia. To reach this aim, we conducted a field-expedition in November 2018, where we combined geomorphic mapping techniques (terrestrial and marine) and geochronological methods to constrain glacier geometry changes of two major outlet glaciers (Icy and Xaltegua) between the Gran Campo Nevado and Pacific Ocean (52°S, 72-74°W). High-resolution terrestrial and marine geomorphic mapping is integrated to understand sub- and marginal glacier dynamics. Cosmogenic surface exposure dating of bedrock and erratics is used to establish vertical and horizontal retreat rates of the former Icy and Xaltegua outlet glaciers. Given the hyper-humid setting in the south-western fjords of Chile (Kilian & Lamy, 2012), we also apply a novel approach to determine sample-specific weathering rates by combining cosmogenic and optically stimulated luminescence techniques (Sohbati et al., 2012; Lehmann et al., 2018). The latter is relevant to assess impact of weathering rates on final cosmogenic surface exposure ages. By using a multi-method approach we hope to provide high-resolution empirical data for integration and testing of regional to global glacier-climate models spanning the last glacier termination.
Fil: Geiger, Alessa. Pontificia Universidad Católica de Chile; Chile. University of Glasgow; Reino Unido
Fil: Smedley, Rachel. University of Liverpool; Reino Unido
Fil: García, Juan Luis. Pontificia Universidad Católica de Chile; Chile
Fil: Rodríguez, Paulo Cesar. Universidad de Magallanes; Chile
Fil: Herrera, Gastón. Universidad de Magallanes; Chile
Fil: Ferri Hidalgo, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Veloso, Mario. Universidad Andrés Bello; Chile
Fil: Gazis, Iason Zois. Geomar-Helmholtz Centre for Ocean Research Kiel; Alemania
Fil: Bertrand, Sebastien. University of Ghent; Bélgica
20th Congress of the International Union for Quaternary Research
Dublin
Irlanda
International Union for Quaternary Research
description Presently a strong correlation exists between southern westerly wind (SWW) strength and precipitation west of the Patagonian Andes (r=0.8; Garreaud et al., 2013). As a result glacier chronologies west of the Andean divide are capable of recording local to hemispheric palaeoclimatic shifts during the late Quaternary better than their eastern counterparts. The aim of the #ChileFjords18 project is to develop a detailed understanding of glacier expansion and manner of recession of intermittently marine terminating outlet glaciers to unravel the interplay between glaciological, climatic and oceanographic forcing during the last glacial-deglacial phase in south-western Patagonia. To reach this aim, we conducted a field-expedition in November 2018, where we combined geomorphic mapping techniques (terrestrial and marine) and geochronological methods to constrain glacier geometry changes of two major outlet glaciers (Icy and Xaltegua) between the Gran Campo Nevado and Pacific Ocean (52°S, 72-74°W). High-resolution terrestrial and marine geomorphic mapping is integrated to understand sub- and marginal glacier dynamics. Cosmogenic surface exposure dating of bedrock and erratics is used to establish vertical and horizontal retreat rates of the former Icy and Xaltegua outlet glaciers. Given the hyper-humid setting in the south-western fjords of Chile (Kilian & Lamy, 2012), we also apply a novel approach to determine sample-specific weathering rates by combining cosmogenic and optically stimulated luminescence techniques (Sohbati et al., 2012; Lehmann et al., 2018). The latter is relevant to assess impact of weathering rates on final cosmogenic surface exposure ages. By using a multi-method approach we hope to provide high-resolution empirical data for integration and testing of regional to global glacier-climate models spanning the last glacier termination.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/273266
A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase; 20th Congress of the International Union for Quaternary Research; Dublin; Irlanda; 2019; 529 - 530
CONICET Digital
CONICET
url http://hdl.handle.net/11336/273266
identifier_str_mv A multi-method approach to constrain glacier geometry changes between the Gran Campo Nevado and Pacific Ocean during last glacial-deglacial phase; 20th Congress of the International Union for Quaternary Research; Dublin; Irlanda; 2019; 529 - 530
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iqua.ie/wp-content/uploads/2020/02/INQUA-2019-Abstract-book.pdf
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
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv International Union for Quaternary Research
publisher.none.fl_str_mv International Union for Quaternary Research
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_ 1846082997965553664
score 13.22299

Publicaciones similares