A stacked mixing sequence at the base of the Dye 3 Core, Greenland
International audience This paper documents, by a detailed isotopic and gas composition study of the basal ice from the Dye 3 core, a large degree of flow‐induced mixing at the ice sheet base. This mixing results most probably from circular motion in troughs of bedrock undulations and flow separatio...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
1998
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-03110386 https://hal.archives-ouvertes.fr/hal-03110386/document https://hal.archives-ouvertes.fr/hal-03110386/file/98GL01411.pdf https://doi.org/10.1029/98GL01411 |
id |
ftunivnantes:oai:HAL:hal-03110386v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-03110386v1 2023-05-15T16:03:03+02:00 A stacked mixing sequence at the base of the Dye 3 Core, Greenland Souchez, R. Bouzette, A. Clausen, H. Johnsen, S. Jouzel, J. Université libre de Bruxelles (ULB) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 1998 https://hal.archives-ouvertes.fr/hal-03110386 https://hal.archives-ouvertes.fr/hal-03110386/document https://hal.archives-ouvertes.fr/hal-03110386/file/98GL01411.pdf https://doi.org/10.1029/98GL01411 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/98GL01411 hal-03110386 https://hal.archives-ouvertes.fr/hal-03110386 https://hal.archives-ouvertes.fr/hal-03110386/document https://hal.archives-ouvertes.fr/hal-03110386/file/98GL01411.pdf doi:10.1029/98GL01411 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.archives-ouvertes.fr/hal-03110386 Geophysical Research Letters, American Geophysical Union, 1998, 25 (11), pp.1943-1946. ⟨10.1029/98GL01411⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 1998 ftunivnantes https://doi.org/10.1029/98GL01411 2022-08-10T02:22:07Z International audience This paper documents, by a detailed isotopic and gas composition study of the basal ice from the Dye 3 core, a large degree of flow‐induced mixing at the ice sheet base. This mixing results most probably from circular motion in troughs of bedrock undulations and flow separations with some entrainment of the underlying ice. The measured distribution of isotopes and gases in the basal ice is the consequence of successive mixing events having occurred upglacier from the site in an area of very rough bedrock topography. The deformation produced makes it possible for the basal part of the ice sheet to cross the subglacial valley existing in the Dye 3 area. Article in Journal/Newspaper Dye 3 Dye-3 Greenland Ice Sheet Université de Nantes: HAL-UNIV-NANTES Greenland Geophysical Research Letters 25 11 1943 1946 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Souchez, R. Bouzette, A. Clausen, H. Johnsen, S. Jouzel, J. A stacked mixing sequence at the base of the Dye 3 Core, Greenland |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience This paper documents, by a detailed isotopic and gas composition study of the basal ice from the Dye 3 core, a large degree of flow‐induced mixing at the ice sheet base. This mixing results most probably from circular motion in troughs of bedrock undulations and flow separations with some entrainment of the underlying ice. The measured distribution of isotopes and gases in the basal ice is the consequence of successive mixing events having occurred upglacier from the site in an area of very rough bedrock topography. The deformation produced makes it possible for the basal part of the ice sheet to cross the subglacial valley existing in the Dye 3 area. |
author2 |
Université libre de Bruxelles (ULB) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Souchez, R. Bouzette, A. Clausen, H. Johnsen, S. Jouzel, J. |
author_facet |
Souchez, R. Bouzette, A. Clausen, H. Johnsen, S. Jouzel, J. |
author_sort |
Souchez, R. |
title |
A stacked mixing sequence at the base of the Dye 3 Core, Greenland |
title_short |
A stacked mixing sequence at the base of the Dye 3 Core, Greenland |
title_full |
A stacked mixing sequence at the base of the Dye 3 Core, Greenland |
title_fullStr |
A stacked mixing sequence at the base of the Dye 3 Core, Greenland |
title_full_unstemmed |
A stacked mixing sequence at the base of the Dye 3 Core, Greenland |
title_sort |
stacked mixing sequence at the base of the dye 3 core, greenland |
publisher |
HAL CCSD |
publishDate |
1998 |
url |
https://hal.archives-ouvertes.fr/hal-03110386 https://hal.archives-ouvertes.fr/hal-03110386/document https://hal.archives-ouvertes.fr/hal-03110386/file/98GL01411.pdf https://doi.org/10.1029/98GL01411 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Dye 3 Dye-3 Greenland Ice Sheet |
genre_facet |
Dye 3 Dye-3 Greenland Ice Sheet |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.archives-ouvertes.fr/hal-03110386 Geophysical Research Letters, American Geophysical Union, 1998, 25 (11), pp.1943-1946. ⟨10.1029/98GL01411⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/98GL01411 hal-03110386 https://hal.archives-ouvertes.fr/hal-03110386 https://hal.archives-ouvertes.fr/hal-03110386/document https://hal.archives-ouvertes.fr/hal-03110386/file/98GL01411.pdf doi:10.1029/98GL01411 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/98GL01411 |
container_title |
Geophysical Research Letters |
container_volume |
25 |
container_issue |
11 |
container_start_page |
1943 |
op_container_end_page |
1946 |
_version_ |
1766398697332015104 |