Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications
Fifteen visible volcanic ash layers (tephra) from Vostok ice cores have been analyzed for major elements, trace elements, and Sr and Nd isotope composition. Comparison of their geochemical signatures to lava composition from the inventory of Antarctic and subantarctic volcanoes, which have been acti...
Published in: | Journal of Geophysical Research: Atmospheres |
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ftinsu:oai:HAL:hal-00726370v1 2023-12-17T10:19:05+01:00 Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications Basile-Doelsch, Isabelle Petit, Jr Touron, S Grousset, Fe Barkov, N Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2001 https://hal.science/hal-00726370 https://hal.science/hal-00726370/document https://hal.science/hal-00726370/file/2000JD000102.pdf https://doi.org/10.1029/2000JD000102 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2000JD000102 hal-00726370 https://hal.science/hal-00726370 https://hal.science/hal-00726370/document https://hal.science/hal-00726370/file/2000JD000102.pdf doi:10.1029/2000JD000102 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-00726370 Journal of Geophysical Research: Atmospheres, 2001, 106 (D23), pp.31915-31931. ⟨10.1029/2000JD000102⟩ DOME-C TEPHRA LAYERS EVOLUTION ISLAND RECORD BENEATH CLIMATE MAGMAS ORIGIN LAVAS [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2001 ftinsu https://doi.org/10.1029/2000JD000102 2023-11-22T17:38:05Z Fifteen visible volcanic ash layers (tephra) from Vostok ice cores have been analyzed for major elements, trace elements, and Sr and Nd isotope composition. Comparison of their geochemical signatures to lava composition from the inventory of Antarctic and subantarctic volcanoes, which have been active over the last 0.5 million years, indicates that nine layers originate from activity of the South Sandwich volcanic arc, three from southern South America, one from the Antarctic Peninsula (Bransfield Strait), and one from West Antarctica (Marie Byrd Land province). The large size of the tephra (up to 50 mum) requires rapid atmospheric transfer from the volcanic centers to East Antarctica. Rapid tropospheric transport from the southwestern Atlantic, penetrating East Antarctica, therefore predominates during the period studied, whether in glacial or interglacial climatic mode. In spite of the low frequency of occurrence of visible tephra layers in Vostok core (one event every 20 kyr), the overall atmospheric pathway of these ash events appears consistent with the almost continuous advection of continental dust from South America. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait East Antarctica Marie Byrd Land West Antarctica Institut national des sciences de l'Univers: HAL-INSU Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica Bransfield Strait Byrd Marie Byrd Land ENVELOPE(-130.000,-130.000,-78.000,-78.000) Journal of Geophysical Research: Atmospheres 106 D23 31915 31931 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
DOME-C TEPHRA LAYERS EVOLUTION ISLAND RECORD BENEATH CLIMATE MAGMAS ORIGIN LAVAS [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
DOME-C TEPHRA LAYERS EVOLUTION ISLAND RECORD BENEATH CLIMATE MAGMAS ORIGIN LAVAS [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDE.MCG]Environmental Sciences/Global Changes Basile-Doelsch, Isabelle Petit, Jr Touron, S Grousset, Fe Barkov, N Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications |
topic_facet |
DOME-C TEPHRA LAYERS EVOLUTION ISLAND RECORD BENEATH CLIMATE MAGMAS ORIGIN LAVAS [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDE.MCG]Environmental Sciences/Global Changes |
description |
Fifteen visible volcanic ash layers (tephra) from Vostok ice cores have been analyzed for major elements, trace elements, and Sr and Nd isotope composition. Comparison of their geochemical signatures to lava composition from the inventory of Antarctic and subantarctic volcanoes, which have been active over the last 0.5 million years, indicates that nine layers originate from activity of the South Sandwich volcanic arc, three from southern South America, one from the Antarctic Peninsula (Bransfield Strait), and one from West Antarctica (Marie Byrd Land province). The large size of the tephra (up to 50 mum) requires rapid atmospheric transfer from the volcanic centers to East Antarctica. Rapid tropospheric transport from the southwestern Atlantic, penetrating East Antarctica, therefore predominates during the period studied, whether in glacial or interglacial climatic mode. In spite of the low frequency of occurrence of visible tephra layers in Vostok core (one event every 20 kyr), the overall atmospheric pathway of these ash events appears consistent with the almost continuous advection of continental dust from South America. |
author2 |
Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Basile-Doelsch, Isabelle Petit, Jr Touron, S Grousset, Fe Barkov, N |
author_facet |
Basile-Doelsch, Isabelle Petit, Jr Touron, S Grousset, Fe Barkov, N |
author_sort |
Basile-Doelsch, Isabelle |
title |
Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications |
title_short |
Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications |
title_full |
Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications |
title_fullStr |
Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications |
title_full_unstemmed |
Volcanic layers in Antarctic (Vostok) ice cores: Source identification and atmospheric implications |
title_sort |
volcanic layers in antarctic (vostok) ice cores: source identification and atmospheric implications |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.science/hal-00726370 https://hal.science/hal-00726370/document https://hal.science/hal-00726370/file/2000JD000102.pdf https://doi.org/10.1029/2000JD000102 |
long_lat |
ENVELOPE(-130.000,-130.000,-78.000,-78.000) |
geographic |
Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica Bransfield Strait Byrd Marie Byrd Land |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica Bransfield Strait Byrd Marie Byrd Land |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait East Antarctica Marie Byrd Land West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait East Antarctica Marie Byrd Land West Antarctica |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-00726370 Journal of Geophysical Research: Atmospheres, 2001, 106 (D23), pp.31915-31931. ⟨10.1029/2000JD000102⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2000JD000102 hal-00726370 https://hal.science/hal-00726370 https://hal.science/hal-00726370/document https://hal.science/hal-00726370/file/2000JD000102.pdf doi:10.1029/2000JD000102 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2000JD000102 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
106 |
container_issue |
D23 |
container_start_page |
31915 |
op_container_end_page |
31931 |
_version_ |
1785580900046602240 |