Natural tritium deposition over Antarctica and estimation of the mean global production rate
International audience Tritium content was measured in snow deposited in Antarctica before the first arrival of artificial tritium (1954), both at Dome C (74°39′S) and South Pole. The mean tritium values at the time of precipitation are equal to 32 ± 2 and 26 ± 3 TU at South Pole (1939-1942) and Dom...
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ftunigrenoble:oai:HAL:hal-03482813v1 2024-05-12T07:56:36+00:00 Natural tritium deposition over Antarctica and estimation of the mean global production rate Jouzel, Jean Merlivat, Liliane Mazaudier, D. Pourchet, M. Lorius, Claude Laboratoire de Biogéochimie Isotopique Université Pierre et Marie Curie - Paris 6 (UPMC) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 1982-10 https://hal.science/hal-03482813 https://hal.science/hal-03482813/document https://hal.science/hal-03482813/file/undefined-7.pdf https://doi.org/10.1029/GL009i010p01191 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/GL009i010p01191 hal-03482813 https://hal.science/hal-03482813 https://hal.science/hal-03482813/document https://hal.science/hal-03482813/file/undefined-7.pdf doi:10.1029/GL009i010p01191 WOS: A1982PL88100018 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03482813 Geophysical Research Letters, 1982, 9 (10), pp.1191-1194. ⟨10.1029/GL009i010p01191⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 1982 ftunigrenoble https://doi.org/10.1029/GL009i010p01191 2024-04-18T03:08:52Z International audience Tritium content was measured in snow deposited in Antarctica before the first arrival of artificial tritium (1954), both at Dome C (74°39′S) and South Pole. The mean tritium values at the time of precipitation are equal to 32 ± 2 and 26 ± 3 TU at South Pole (1939-1942) and Dome C (1951) respectively. A seasonal pattern of natural tritium fallout identical to the artificial pattern (with a winter maximum) is observed in the South Pole profile.The deposition rate of natural tritium is 0.6 and 0.2 tritium atoms cm−2.sec−1 at South Pole and Dome C respectively. Its geographical variation over Antarctica appears quite similar to that existing for artificial tritium, clearly showing that the same mechanisms govern the deposition of natural and artificial tritium, in particular tritium injection over polar regions during Antarctic winter. A mean deposition rate of 0.37 tritium atoms cm−2.sec−1, over Antarctica is derived giving an estimated mean global production rate of 0.2 tritium atoms cm−2.sec−1.This strongly suggests that natural tritium results only from cosmic ray production. Article in Journal/Newspaper Antarc* Antarctic Antarctica South pole South pole Université Grenoble Alpes: HAL Antarctic South Pole Geophysical Research Letters 9 10 1191 1194 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Jouzel, Jean Merlivat, Liliane Mazaudier, D. Pourchet, M. Lorius, Claude Natural tritium deposition over Antarctica and estimation of the mean global production rate |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience Tritium content was measured in snow deposited in Antarctica before the first arrival of artificial tritium (1954), both at Dome C (74°39′S) and South Pole. The mean tritium values at the time of precipitation are equal to 32 ± 2 and 26 ± 3 TU at South Pole (1939-1942) and Dome C (1951) respectively. A seasonal pattern of natural tritium fallout identical to the artificial pattern (with a winter maximum) is observed in the South Pole profile.The deposition rate of natural tritium is 0.6 and 0.2 tritium atoms cm−2.sec−1 at South Pole and Dome C respectively. Its geographical variation over Antarctica appears quite similar to that existing for artificial tritium, clearly showing that the same mechanisms govern the deposition of natural and artificial tritium, in particular tritium injection over polar regions during Antarctic winter. A mean deposition rate of 0.37 tritium atoms cm−2.sec−1, over Antarctica is derived giving an estimated mean global production rate of 0.2 tritium atoms cm−2.sec−1.This strongly suggests that natural tritium results only from cosmic ray production. |
author2 |
Laboratoire de Biogéochimie Isotopique Université Pierre et Marie Curie - Paris 6 (UPMC) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Jouzel, Jean Merlivat, Liliane Mazaudier, D. Pourchet, M. Lorius, Claude |
author_facet |
Jouzel, Jean Merlivat, Liliane Mazaudier, D. Pourchet, M. Lorius, Claude |
author_sort |
Jouzel, Jean |
title |
Natural tritium deposition over Antarctica and estimation of the mean global production rate |
title_short |
Natural tritium deposition over Antarctica and estimation of the mean global production rate |
title_full |
Natural tritium deposition over Antarctica and estimation of the mean global production rate |
title_fullStr |
Natural tritium deposition over Antarctica and estimation of the mean global production rate |
title_full_unstemmed |
Natural tritium deposition over Antarctica and estimation of the mean global production rate |
title_sort |
natural tritium deposition over antarctica and estimation of the mean global production rate |
publisher |
HAL CCSD |
publishDate |
1982 |
url |
https://hal.science/hal-03482813 https://hal.science/hal-03482813/document https://hal.science/hal-03482813/file/undefined-7.pdf https://doi.org/10.1029/GL009i010p01191 |
geographic |
Antarctic South Pole |
geographic_facet |
Antarctic South Pole |
genre |
Antarc* Antarctic Antarctica South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica South pole South pole |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03482813 Geophysical Research Letters, 1982, 9 (10), pp.1191-1194. ⟨10.1029/GL009i010p01191⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/GL009i010p01191 hal-03482813 https://hal.science/hal-03482813 https://hal.science/hal-03482813/document https://hal.science/hal-03482813/file/undefined-7.pdf doi:10.1029/GL009i010p01191 WOS: A1982PL88100018 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/GL009i010p01191 |
container_title |
Geophysical Research Letters |
container_volume |
9 |
container_issue |
10 |
container_start_page |
1191 |
op_container_end_page |
1194 |
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1798836753042243584 |