Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core
The study of the distribution of crystallographic orientations (i.e., the fabric) along ice cores provides information on past and current ice flow in ice-sheets. Besides the usually observed formation of a vertical single maximum fabric, the EPICA Dome C ice core (EDC) shows an abrupt and unexpecte...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00032574 2023-05-15T16:06:15+02:00 Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core Durand, G. Gillet-Chaulet, F. Svensson, A. Gagliardini, O. Kipfstuhl, S. Meyssonnier, J. Parrenin, F. Duval, P. Dahl-Jensen, D. 2007-03 electronic https://doi.org/10.5194/cp-3-155-2007 https://noa.gwlb.de/receive/cop_mods_00032574 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032528/cp-3-155-2007.pdf https://cp.copernicus.org/articles/3/155/2007/cp-3-155-2007.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-3-155-2007 https://noa.gwlb.de/receive/cop_mods_00032574 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032528/cp-3-155-2007.pdf https://cp.copernicus.org/articles/3/155/2007/cp-3-155-2007.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2007 ftnonlinearchiv https://doi.org/10.5194/cp-3-155-2007 2022-02-08T22:46:11Z The study of the distribution of crystallographic orientations (i.e., the fabric) along ice cores provides information on past and current ice flow in ice-sheets. Besides the usually observed formation of a vertical single maximum fabric, the EPICA Dome C ice core (EDC) shows an abrupt and unexpected strengthening of its fabric during termination II around 1750 m depth. Such strengthening has already been observed for sites located on an ice-sheet flank. This suggests that horizontal shear could occur along the EDC core. Moreover, the change in the fabric leads to a modification of the effective viscosity between neighbouring ice layers. Through the use of an anisotropic ice flow model, we quantify the change in effective viscosity and investigate its implication for ice flow and dating. Article in Journal/Newspaper EPICA ice core Ice Sheet Niedersächsisches Online-Archiv NOA Climate of the Past 3 1 155 167 |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Durand, G. Gillet-Chaulet, F. Svensson, A. Gagliardini, O. Kipfstuhl, S. Meyssonnier, J. Parrenin, F. Duval, P. Dahl-Jensen, D. Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core |
topic_facet |
article Verlagsveröffentlichung |
description |
The study of the distribution of crystallographic orientations (i.e., the fabric) along ice cores provides information on past and current ice flow in ice-sheets. Besides the usually observed formation of a vertical single maximum fabric, the EPICA Dome C ice core (EDC) shows an abrupt and unexpected strengthening of its fabric during termination II around 1750 m depth. Such strengthening has already been observed for sites located on an ice-sheet flank. This suggests that horizontal shear could occur along the EDC core. Moreover, the change in the fabric leads to a modification of the effective viscosity between neighbouring ice layers. Through the use of an anisotropic ice flow model, we quantify the change in effective viscosity and investigate its implication for ice flow and dating. |
format |
Article in Journal/Newspaper |
author |
Durand, G. Gillet-Chaulet, F. Svensson, A. Gagliardini, O. Kipfstuhl, S. Meyssonnier, J. Parrenin, F. Duval, P. Dahl-Jensen, D. |
author_facet |
Durand, G. Gillet-Chaulet, F. Svensson, A. Gagliardini, O. Kipfstuhl, S. Meyssonnier, J. Parrenin, F. Duval, P. Dahl-Jensen, D. |
author_sort |
Durand, G. |
title |
Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core |
title_short |
Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core |
title_full |
Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core |
title_fullStr |
Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core |
title_full_unstemmed |
Change in ice rheology during climate variations – implications for ice flow modelling and dating of the EPICA Dome C core |
title_sort |
change in ice rheology during climate variations – implications for ice flow modelling and dating of the epica dome c core |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
https://doi.org/10.5194/cp-3-155-2007 https://noa.gwlb.de/receive/cop_mods_00032574 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032528/cp-3-155-2007.pdf https://cp.copernicus.org/articles/3/155/2007/cp-3-155-2007.pdf |
genre |
EPICA ice core Ice Sheet |
genre_facet |
EPICA ice core Ice Sheet |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-3-155-2007 https://noa.gwlb.de/receive/cop_mods_00032574 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032528/cp-3-155-2007.pdf https://cp.copernicus.org/articles/3/155/2007/cp-3-155-2007.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-3-155-2007 |
container_title |
Climate of the Past |
container_volume |
3 |
container_issue |
1 |
container_start_page |
155 |
op_container_end_page |
167 |
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1766402152750645248 |