Patagonian and southern South Atlantic view of Holocene climate

Autores
Kaplan, Michael; Schaefer, Joerg; STRELIN, Jorge Adrián; Denton, George; Anderson, R. F.; Vandergoes, M.; Finkel, R.; Schwartz, Roseanne; Travis, S.; Garcia, J. L.; Martini, Mateo Antonio; Nielsen, S. H. H.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a comprehensive 10Be chronology for Holocene moraines in the Lago Argentino basin, on the east side of the South Patagonian Icefield. We focus on three different areas, where prior studies show ample glacier moraine records exist because they were formed by outlet glaciers sensitive to climate change. The 10Be dated records are from the Lago Pearson, Herminita Península-Brazo Upsala, and Lago Frías areas, which span a distance of almost 100 km adjacent to the modern Icefield. New 10Be ages show that expanded glaciers and moraine building events occurred at least at 6120 ± 390 (n = 13), 4450 ± 220 (n = 7), 1450 or 1410 ± 110 (n = 18), 360 ± 30 (n = 5), and 240 ± 20 (n = 8) years ago. Furthermore, other less well-dated glacier expansions of the Upsala Glacier occurred between ~1400 and ∼1000 and ∼2300 and ∼2000 years ago. The most extensive glaciers occurred over the interval from ∼6100 to ∼4500 years ago, and their margins over the last ∼600 years were well within and lower than those in the middle Holocene. The 10Be ages agree with 14C-limiting data for the glacier histories in this area. We then link southern South American, adjacent South Atlantic, and other Southern Hemisphere records to elucidate broader regional patterns of climate and their possible causes. In the early Holocene, a far southward position of the westerly winds fostered warmth, small Patagonian glaciers, and reduced sea ice coverage over the South Atlantic. Although we infer a pronounced southward displacement of the westerlies during the early Holocene, these conditions did not occur throughout the southern mid-high latitudes, an important exception being over the southwest Pacific sector. Subsequently, a northward locus and/or expansion of the winds over the Patagonia-South Atlantic sector promoted the largest glaciers between ∼6100 and ∼4500 years ago and greatest sea ice coverage. Over the last few millennia, the South Patagonian Icefield has experienced successive century-scale advances superimposed on a long-term net decrease in size. Our findings indicate that glaciers and sea ice in the Patagonian-South Atlantic sector of the Southern Hemisphere did not achieve their largest Holocene extents over the last millennium. We conclude that a pattern of more extensive Holocene ice prior to the last millennium is characteristic of the Southern Hemisphere middle latitudes, which differs from the glacier history traditionally thought for the Northern Hemisphere.
Fil: Kaplan, Michael. Lamont Doherty Earth Observatory; Estados Unidos
Fil: Schaefer, Joerg. Lamont Doherty Earth Observatory; Estados Unidos
Fil: STRELIN, Jorge Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Denton, George. Lamont Doherty Earth Observatory; Estados Unidos. University Of Maine; Estados Unidos
Fil: Anderson, R. F.. University Of Maine; Estados Unidos. Lamont Doherty Earth Observatory; Estados Unidos
Fil: Vandergoes, M.. GNS Science; Estados Unidos
Fil: Finkel, R.. California State University; Estados Unidos
Fil: Schwartz, Roseanne. Lamont Doherty Earth Observatory; Estados Unidos
Fil: Travis, S.. General Communication Inc.; Estados Unidos
Fil: Garcia, J. L.. University Of Maine; Estados Unidos. Pontificia Universidad Católica de Chile; Chile
Fil: Martini, Mateo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Nielsen, S. H. H.. Kenex Ltd.; Nueva Zelanda
Materia
Cosmogenic Dating
Patagonia
South Atlantic Ocean
Paleoclimate
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:11336/44297

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spelling Patagonian and southern South Atlantic view of Holocene climateKaplan, MichaelSchaefer, JoergSTRELIN, Jorge AdriánDenton, GeorgeAnderson, R. F.Vandergoes, M.Finkel, R.Schwartz, RoseanneTravis, S.Garcia, J. L.Martini, Mateo AntonioNielsen, S. H. H.Cosmogenic DatingPatagoniaSouth Atlantic OceanPaleoclimatehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We present a comprehensive 10Be chronology for Holocene moraines in the Lago Argentino basin, on the east side of the South Patagonian Icefield. We focus on three different areas, where prior studies show ample glacier moraine records exist because they were formed by outlet glaciers sensitive to climate change. The 10Be dated records are from the Lago Pearson, Herminita Península-Brazo Upsala, and Lago Frías areas, which span a distance of almost 100 km adjacent to the modern Icefield. New 10Be ages show that expanded glaciers and moraine building events occurred at least at 6120 ± 390 (n = 13), 4450 ± 220 (n = 7), 1450 or 1410 ± 110 (n = 18), 360 ± 30 (n = 5), and 240 ± 20 (n = 8) years ago. Furthermore, other less well-dated glacier expansions of the Upsala Glacier occurred between ~1400 and ∼1000 and ∼2300 and ∼2000 years ago. The most extensive glaciers occurred over the interval from ∼6100 to ∼4500 years ago, and their margins over the last ∼600 years were well within and lower than those in the middle Holocene. The 10Be ages agree with 14C-limiting data for the glacier histories in this area. We then link southern South American, adjacent South Atlantic, and other Southern Hemisphere records to elucidate broader regional patterns of climate and their possible causes. In the early Holocene, a far southward position of the westerly winds fostered warmth, small Patagonian glaciers, and reduced sea ice coverage over the South Atlantic. Although we infer a pronounced southward displacement of the westerlies during the early Holocene, these conditions did not occur throughout the southern mid-high latitudes, an important exception being over the southwest Pacific sector. Subsequently, a northward locus and/or expansion of the winds over the Patagonia-South Atlantic sector promoted the largest glaciers between ∼6100 and ∼4500 years ago and greatest sea ice coverage. Over the last few millennia, the South Patagonian Icefield has experienced successive century-scale advances superimposed on a long-term net decrease in size. Our findings indicate that glaciers and sea ice in the Patagonian-South Atlantic sector of the Southern Hemisphere did not achieve their largest Holocene extents over the last millennium. We conclude that a pattern of more extensive Holocene ice prior to the last millennium is characteristic of the Southern Hemisphere middle latitudes, which differs from the glacier history traditionally thought for the Northern Hemisphere.Fil: Kaplan, Michael. Lamont Doherty Earth Observatory; Estados UnidosFil: Schaefer, Joerg. Lamont Doherty Earth Observatory; Estados UnidosFil: STRELIN, Jorge Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Denton, George. Lamont Doherty Earth Observatory; Estados Unidos. University Of Maine; Estados UnidosFil: Anderson, R. F.. University Of Maine; Estados Unidos. Lamont Doherty Earth Observatory; Estados UnidosFil: Vandergoes, M.. GNS Science; Estados UnidosFil: Finkel, R.. California State University; Estados UnidosFil: Schwartz, Roseanne. Lamont Doherty Earth Observatory; Estados UnidosFil: Travis, S.. General Communication Inc.; Estados UnidosFil: Garcia, J. L.. University Of Maine; Estados Unidos. Pontificia Universidad Católica de Chile; ChileFil: Martini, Mateo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Nielsen, S. H. H.. Kenex Ltd.; Nueva ZelandaPergamon-Elsevier Science Ltd2016-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/44297Kaplan, Michael; Schaefer, Joerg; STRELIN, Jorge Adrián; Denton, George; Anderson, R. F. ; et al.; Patagonian and southern South Atlantic view of Holocene climate; Pergamon-Elsevier Science Ltd; Quaternary Science Reviews; 141; 4-2016; 112-1250277-3791CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0277379116300750info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2016.03.014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:31Zoai:ri.conicet.gov.ar:11336/44297instacron: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 09:50:32.239CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Patagonian and southern South Atlantic view of Holocene climate
title Patagonian and southern South Atlantic view of Holocene climate
spellingShingle Patagonian and southern South Atlantic view of Holocene climate
Kaplan, Michael
Cosmogenic Dating
Patagonia
South Atlantic Ocean
Paleoclimate
title_short Patagonian and southern South Atlantic view of Holocene climate
title_full Patagonian and southern South Atlantic view of Holocene climate
title_fullStr Patagonian and southern South Atlantic view of Holocene climate
title_full_unstemmed Patagonian and southern South Atlantic view of Holocene climate
title_sort Patagonian and southern South Atlantic view of Holocene climate
dc.creator.none.fl_str_mv Kaplan, Michael
Schaefer, Joerg
STRELIN, Jorge Adrián
Denton, George
Anderson, R. F.
Vandergoes, M.
Finkel, R.
Schwartz, Roseanne
Travis, S.
Garcia, J. L.
Martini, Mateo Antonio
Nielsen, S. H. H.
author Kaplan, Michael
author_facet Kaplan, Michael
Schaefer, Joerg
STRELIN, Jorge Adrián
Denton, George
Anderson, R. F.
Vandergoes, M.
Finkel, R.
Schwartz, Roseanne
Travis, S.
Garcia, J. L.
Martini, Mateo Antonio
Nielsen, S. H. H.
author_role author
author2 Schaefer, Joerg
STRELIN, Jorge Adrián
Denton, George
Anderson, R. F.
Vandergoes, M.
Finkel, R.
Schwartz, Roseanne
Travis, S.
Garcia, J. L.
Martini, Mateo Antonio
Nielsen, S. H. H.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Cosmogenic Dating
Patagonia
South Atlantic Ocean
Paleoclimate
topic Cosmogenic Dating
Patagonia
South Atlantic Ocean
Paleoclimate
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a comprehensive 10Be chronology for Holocene moraines in the Lago Argentino basin, on the east side of the South Patagonian Icefield. We focus on three different areas, where prior studies show ample glacier moraine records exist because they were formed by outlet glaciers sensitive to climate change. The 10Be dated records are from the Lago Pearson, Herminita Península-Brazo Upsala, and Lago Frías areas, which span a distance of almost 100 km adjacent to the modern Icefield. New 10Be ages show that expanded glaciers and moraine building events occurred at least at 6120 ± 390 (n = 13), 4450 ± 220 (n = 7), 1450 or 1410 ± 110 (n = 18), 360 ± 30 (n = 5), and 240 ± 20 (n = 8) years ago. Furthermore, other less well-dated glacier expansions of the Upsala Glacier occurred between ~1400 and ∼1000 and ∼2300 and ∼2000 years ago. The most extensive glaciers occurred over the interval from ∼6100 to ∼4500 years ago, and their margins over the last ∼600 years were well within and lower than those in the middle Holocene. The 10Be ages agree with 14C-limiting data for the glacier histories in this area. We then link southern South American, adjacent South Atlantic, and other Southern Hemisphere records to elucidate broader regional patterns of climate and their possible causes. In the early Holocene, a far southward position of the westerly winds fostered warmth, small Patagonian glaciers, and reduced sea ice coverage over the South Atlantic. Although we infer a pronounced southward displacement of the westerlies during the early Holocene, these conditions did not occur throughout the southern mid-high latitudes, an important exception being over the southwest Pacific sector. Subsequently, a northward locus and/or expansion of the winds over the Patagonia-South Atlantic sector promoted the largest glaciers between ∼6100 and ∼4500 years ago and greatest sea ice coverage. Over the last few millennia, the South Patagonian Icefield has experienced successive century-scale advances superimposed on a long-term net decrease in size. Our findings indicate that glaciers and sea ice in the Patagonian-South Atlantic sector of the Southern Hemisphere did not achieve their largest Holocene extents over the last millennium. We conclude that a pattern of more extensive Holocene ice prior to the last millennium is characteristic of the Southern Hemisphere middle latitudes, which differs from the glacier history traditionally thought for the Northern Hemisphere.
Fil: Kaplan, Michael. Lamont Doherty Earth Observatory; Estados Unidos
Fil: Schaefer, Joerg. Lamont Doherty Earth Observatory; Estados Unidos
Fil: STRELIN, Jorge Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Denton, George. Lamont Doherty Earth Observatory; Estados Unidos. University Of Maine; Estados Unidos
Fil: Anderson, R. F.. University Of Maine; Estados Unidos. Lamont Doherty Earth Observatory; Estados Unidos
Fil: Vandergoes, M.. GNS Science; Estados Unidos
Fil: Finkel, R.. California State University; Estados Unidos
Fil: Schwartz, Roseanne. Lamont Doherty Earth Observatory; Estados Unidos
Fil: Travis, S.. General Communication Inc.; Estados Unidos
Fil: Garcia, J. L.. University Of Maine; Estados Unidos. Pontificia Universidad Católica de Chile; Chile
Fil: Martini, Mateo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Nielsen, S. H. H.. Kenex Ltd.; Nueva Zelanda
description We present a comprehensive 10Be chronology for Holocene moraines in the Lago Argentino basin, on the east side of the South Patagonian Icefield. We focus on three different areas, where prior studies show ample glacier moraine records exist because they were formed by outlet glaciers sensitive to climate change. The 10Be dated records are from the Lago Pearson, Herminita Península-Brazo Upsala, and Lago Frías areas, which span a distance of almost 100 km adjacent to the modern Icefield. New 10Be ages show that expanded glaciers and moraine building events occurred at least at 6120 ± 390 (n = 13), 4450 ± 220 (n = 7), 1450 or 1410 ± 110 (n = 18), 360 ± 30 (n = 5), and 240 ± 20 (n = 8) years ago. Furthermore, other less well-dated glacier expansions of the Upsala Glacier occurred between ~1400 and ∼1000 and ∼2300 and ∼2000 years ago. The most extensive glaciers occurred over the interval from ∼6100 to ∼4500 years ago, and their margins over the last ∼600 years were well within and lower than those in the middle Holocene. The 10Be ages agree with 14C-limiting data for the glacier histories in this area. We then link southern South American, adjacent South Atlantic, and other Southern Hemisphere records to elucidate broader regional patterns of climate and their possible causes. In the early Holocene, a far southward position of the westerly winds fostered warmth, small Patagonian glaciers, and reduced sea ice coverage over the South Atlantic. Although we infer a pronounced southward displacement of the westerlies during the early Holocene, these conditions did not occur throughout the southern mid-high latitudes, an important exception being over the southwest Pacific sector. Subsequently, a northward locus and/or expansion of the winds over the Patagonia-South Atlantic sector promoted the largest glaciers between ∼6100 and ∼4500 years ago and greatest sea ice coverage. Over the last few millennia, the South Patagonian Icefield has experienced successive century-scale advances superimposed on a long-term net decrease in size. Our findings indicate that glaciers and sea ice in the Patagonian-South Atlantic sector of the Southern Hemisphere did not achieve their largest Holocene extents over the last millennium. We conclude that a pattern of more extensive Holocene ice prior to the last millennium is characteristic of the Southern Hemisphere middle latitudes, which differs from the glacier history traditionally thought for the Northern Hemisphere.
publishDate 2016
dc.date.none.fl_str_mv 2016-04
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/11336/44297
Kaplan, Michael; Schaefer, Joerg; STRELIN, Jorge Adrián; Denton, George; Anderson, R. F. ; et al.; Patagonian and southern South Atlantic view of Holocene climate; Pergamon-Elsevier Science Ltd; Quaternary Science Reviews; 141; 4-2016; 112-125
0277-3791
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44297
identifier_str_mv Kaplan, Michael; Schaefer, Joerg; STRELIN, Jorge Adrián; Denton, George; Anderson, R. F. ; et al.; Patagonian and southern South Atlantic view of Holocene climate; Pergamon-Elsevier Science Ltd; Quaternary Science Reviews; 141; 4-2016; 112-125
0277-3791
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0277379116300750
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2016.03.014
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
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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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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