Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate
International audience A careful search for iridium in snow-ice samples deposited in Antarctica by the time of the great Tunguska explosion in 1908 has produced negative results. The worldwide dispersion of the cosmic bolide responsible for the event has not left a detectable Ir inprint in South Pol...
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1990
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Online Access: | https://hal.science/hal-03582517 https://doi.org/10.1130/SPE247-p189 |
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ftccsdartic:oai:HAL:hal-03582517v1 2023-07-23T04:15:07+02:00 Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate Rocchia, Robert Bonté, Philippe Jéhanno, Célestine Robin, Eric de Angelis, Martine Boclet, Daniel Centre des Faibles Radioactivités Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS) 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) Centre d'Etude de Saclay Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 1990-01-01 https://hal.science/hal-03582517 https://doi.org/10.1130/SPE247-p189 en eng HAL CCSD Geological Society of America info:eu-repo/semantics/altIdentifier/doi/10.1130/SPE247-p189 hal-03582517 https://hal.science/hal-03582517 doi:10.1130/SPE247-p189 Global Catastrophes in Earth History; An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality https://hal.science/hal-03582517 Global Catastrophes in Earth History; An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality, 247, Geological Society of America, pp.189-194, 1990, Geological Society of America Special Papers, ⟨10.1130/SPE247-p189⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/bookPart Book sections 1990 ftccsdartic https://doi.org/10.1130/SPE247-p189 2023-07-02T00:29:12Z International audience A careful search for iridium in snow-ice samples deposited in Antarctica by the time of the great Tunguska explosion in 1908 has produced negative results. The worldwide dispersion of the cosmic bolide responsible for the event has not left a detectable Ir inprint in South Pole snow. The iridium infall from the Tunguska event is at least a factor of 20 lower than previously estimated. The local iridium background, averaged over a period of 30 years, is consistent with a global micrometeorite flux of about 10 Gg per year. Book Part Antarc* Antarctic Antarctica South pole South pole Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic South Pole The Antarctic Tunguska ENVELOPE(144.784,144.784,59.388,59.388) 189 194 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Rocchia, Robert Bonté, Philippe Jéhanno, Célestine Robin, Eric de Angelis, Martine Boclet, Daniel Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience A careful search for iridium in snow-ice samples deposited in Antarctica by the time of the great Tunguska explosion in 1908 has produced negative results. The worldwide dispersion of the cosmic bolide responsible for the event has not left a detectable Ir inprint in South Pole snow. The iridium infall from the Tunguska event is at least a factor of 20 lower than previously estimated. The local iridium background, averaged over a period of 30 years, is consistent with a global micrometeorite flux of about 10 Gg per year. |
author2 |
Centre des Faibles Radioactivités Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS) 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) Centre d'Etude de Saclay Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Book Part |
author |
Rocchia, Robert Bonté, Philippe Jéhanno, Célestine Robin, Eric de Angelis, Martine Boclet, Daniel |
author_facet |
Rocchia, Robert Bonté, Philippe Jéhanno, Célestine Robin, Eric de Angelis, Martine Boclet, Daniel |
author_sort |
Rocchia, Robert |
title |
Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate |
title_short |
Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate |
title_full |
Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate |
title_fullStr |
Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate |
title_full_unstemmed |
Search for the Tunguska event relics in the Antarctic snow and new estimation of the cosmic iridium accretion rate |
title_sort |
search for the tunguska event relics in the antarctic snow and new estimation of the cosmic iridium accretion rate |
publisher |
HAL CCSD |
publishDate |
1990 |
url |
https://hal.science/hal-03582517 https://doi.org/10.1130/SPE247-p189 |
long_lat |
ENVELOPE(144.784,144.784,59.388,59.388) |
geographic |
Antarctic South Pole The Antarctic Tunguska |
geographic_facet |
Antarctic South Pole The Antarctic Tunguska |
genre |
Antarc* Antarctic Antarctica South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica South pole South pole |
op_source |
Global Catastrophes in Earth History; An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality https://hal.science/hal-03582517 Global Catastrophes in Earth History; An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality, 247, Geological Society of America, pp.189-194, 1990, Geological Society of America Special Papers, ⟨10.1130/SPE247-p189⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1130/SPE247-p189 hal-03582517 https://hal.science/hal-03582517 doi:10.1130/SPE247-p189 |
op_doi |
https://doi.org/10.1130/SPE247-p189 |
container_start_page |
189 |
op_container_end_page |
194 |
_version_ |
1772189112842846208 |