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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ftdoajarticles:oai:doaj.org/article:3704d60bd6ce4cff967d0063e21487bf 2023-05-15T13:45:41+02:00 1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica F. Parrenin G. Dreyfus G. Durand S. Fujita O. Gagliardini F. Gillet J. Jouzel K. Kawamura N. Lhomme V. Masson-Delmotte C. Ritz J. Schwander H. Shoji R. Uemura O. Watanabe N. Yoshida 2007-06-01T00:00:00Z https://doaj.org/article/3704d60bd6ce4cff967d0063e21487bf EN eng Copernicus Publications http://www.clim-past.net/3/243/2007/cp-3-243-2007.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 https://doaj.org/article/3704d60bd6ce4cff967d0063e21487bf Climate of the Past, Vol 3, Iss 2, Pp 243-259 (2007) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2007 ftdoajarticles 2022-12-31T08:49:38Z 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 Directory of Open Access Journals: DOAJ Articles East Antarctica Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 F. Parrenin G. Dreyfus G. Durand S. Fujita O. Gagliardini F. Gillet J. Jouzel K. Kawamura N. Lhomme V. Masson-Delmotte C. Ritz J. Schwander H. Shoji R. Uemura O. Watanabe N. Yoshida 1-D-ice flow modelling at EPICA Dome C and Dome Fuji, East Antarctica |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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 |
F. Parrenin G. Dreyfus G. Durand S. Fujita O. Gagliardini F. Gillet J. Jouzel K. Kawamura N. Lhomme V. Masson-Delmotte C. Ritz J. Schwander H. Shoji R. Uemura O. Watanabe N. Yoshida |
author_facet |
F. Parrenin G. Dreyfus G. Durand S. Fujita O. Gagliardini F. Gillet J. Jouzel K. Kawamura N. Lhomme V. Masson-Delmotte C. Ritz J. Schwander H. Shoji R. Uemura O. Watanabe N. Yoshida |
author_sort |
F. Parrenin |
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://doaj.org/article/3704d60bd6ce4cff967d0063e21487bf |
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_source |
Climate of the Past, Vol 3, Iss 2, Pp 243-259 (2007) |
op_relation |
http://www.clim-past.net/3/243/2007/cp-3-243-2007.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 https://doaj.org/article/3704d60bd6ce4cff967d0063e21487bf |
_version_ |
1766229736770502656 |