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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/44297
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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) 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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1844613557156577280 |
score |
13.070432 |