1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica
One-dimensional (1-D) ice flow models are used to construct the age scales at the Dome C and Dome Fuji drilling sites (East Antarctica). The poorly constrained glaciological parameters at each site are recovered by fitting independent age markers identified within each core. We reconstruct past accu...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2007
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00032437 2023-05-15T13:36:44+02:00 1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica Parrenin, F. Dreyfus, G. Durand, G. Fujita, S. Gagliardini, O. Gillet, F. Jouzel, J. Kawamura, K. Lhomme, N. Masson-Delmotte, V. Ritz, C. Schwander, J. Shoji, H. Uemura, R. Watanabe, O. Yoshida, N. 2007-06 electronic https://doi.org/10.5194/cp-3-243-2007 https://noa.gwlb.de/receive/cop_mods_00032437 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032391/cp-3-243-2007.pdf https://cp.copernicus.org/articles/3/243/2007/cp-3-243-2007.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-3-243-2007 https://noa.gwlb.de/receive/cop_mods_00032437 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032391/cp-3-243-2007.pdf https://cp.copernicus.org/articles/3/243/2007/cp-3-243-2007.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-3-243-2007 2022-02-08T22:46:14Z One-dimensional (1-D) ice flow models are used to construct the age scales at the Dome C and Dome Fuji drilling sites (East Antarctica). The poorly constrained glaciological parameters at each site are recovered by fitting independent age markers identified within each core. We reconstruct past accumulation rates, that are larger than those modelled using the classical vapour saturation pressure relationship during glacial periods by up to a factor 1.5. During the Early Holocene, changes in reconstructed accumulation are not linearly related to changes in ice isotopic composition. A simple model of past elevation changes is developed and shows an amplitude variation of 110–120 m at both sites. We suggest that there is basal melting at Dome C (0.56±0.19 mm/yr). The reconstructed velocity profile is highly non-linear at both sites, which suggests complex ice flow effects. This induces a non-linear thinning function in both drilling sites, which is also characterized by bumps corresponding to variations in ice thickness with time. Article in Journal/Newspaper Antarc* Antarctica East Antarctica EPICA Niedersächsisches Online-Archiv NOA East Antarctica Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Climate of the Past 3 2 243 259 |
institution |
Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Parrenin, F. Dreyfus, G. Durand, G. Fujita, S. Gagliardini, O. Gillet, F. Jouzel, J. Kawamura, K. Lhomme, N. Masson-Delmotte, V. Ritz, C. Schwander, J. Shoji, H. Uemura, R. Watanabe, O. Yoshida, N. 1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
One-dimensional (1-D) ice flow models are used to construct the age scales at the Dome C and Dome Fuji drilling sites (East Antarctica). The poorly constrained glaciological parameters at each site are recovered by fitting independent age markers identified within each core. We reconstruct past accumulation rates, that are larger than those modelled using the classical vapour saturation pressure relationship during glacial periods by up to a factor 1.5. During the Early Holocene, changes in reconstructed accumulation are not linearly related to changes in ice isotopic composition. A simple model of past elevation changes is developed and shows an amplitude variation of 110–120 m at both sites. We suggest that there is basal melting at Dome C (0.56±0.19 mm/yr). The reconstructed velocity profile is highly non-linear at both sites, which suggests complex ice flow effects. This induces a non-linear thinning function in both drilling sites, which is also characterized by bumps corresponding to variations in ice thickness with time. |
format |
Article in Journal/Newspaper |
author |
Parrenin, F. Dreyfus, G. Durand, G. Fujita, S. Gagliardini, O. Gillet, F. Jouzel, J. Kawamura, K. Lhomme, N. Masson-Delmotte, V. Ritz, C. Schwander, J. Shoji, H. Uemura, R. Watanabe, O. Yoshida, N. |
author_facet |
Parrenin, F. Dreyfus, G. Durand, G. Fujita, S. Gagliardini, O. Gillet, F. Jouzel, J. Kawamura, K. Lhomme, N. Masson-Delmotte, V. Ritz, C. Schwander, J. Shoji, H. Uemura, R. Watanabe, O. Yoshida, N. |
author_sort |
Parrenin, F. |
title |
1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica |
title_short |
1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica |
title_full |
1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica |
title_fullStr |
1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica |
title_full_unstemmed |
1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica |
title_sort |
1-d-ice flow modelling at epica dome c and dome fuji, east antarctica |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
https://doi.org/10.5194/cp-3-243-2007 https://noa.gwlb.de/receive/cop_mods_00032437 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032391/cp-3-243-2007.pdf https://cp.copernicus.org/articles/3/243/2007/cp-3-243-2007.pdf |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
East Antarctica Dome Fuji |
geographic_facet |
East Antarctica Dome Fuji |
genre |
Antarc* Antarctica East Antarctica EPICA |
genre_facet |
Antarc* Antarctica East Antarctica EPICA |
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-3-243-2007 https://noa.gwlb.de/receive/cop_mods_00032437 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032391/cp-3-243-2007.pdf https://cp.copernicus.org/articles/3/243/2007/cp-3-243-2007.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-3-243-2007 |
container_title |
Climate of the Past |
container_volume |
3 |
container_issue |
2 |
container_start_page |
243 |
op_container_end_page |
259 |
_version_ |
1766082976614973440 |