A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution
A three-dimensional, thermo-mechanically coupled ice flow model with induced anisotropy has been applied to a ~200 × 200 km domain around the Dome Fuji drill site, Antarctica. The model ("Elmer/Ice") is based on the open-source multi-physics package Elmer ( http://www.csc.fi/elmer/ ) and s...
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ftdoajarticles:oai:doaj.org/article:5e80b2e577f14093a46567c9154d3061 2023-05-15T13:30:24+02:00 A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution H. Seddik R. Greve T. Zwinger L. Placidi 2011-06-01T00:00:00Z https://doi.org/10.5194/tc-5-495-2011 https://doaj.org/article/5e80b2e577f14093a46567c9154d3061 EN eng Copernicus Publications http://www.the-cryosphere.net/5/495/2011/tc-5-495-2011.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-5-495-2011 1994-0416 1994-0424 https://doaj.org/article/5e80b2e577f14093a46567c9154d3061 The Cryosphere, Vol 5, Iss 2, Pp 495-508 (2011) Environmental sciences GE1-350 Geology QE1-996.5 article 2011 ftdoajarticles https://doi.org/10.5194/tc-5-495-2011 2022-12-30T21:02:54Z A three-dimensional, thermo-mechanically coupled ice flow model with induced anisotropy has been applied to a ~200 × 200 km domain around the Dome Fuji drill site, Antarctica. The model ("Elmer/Ice") is based on the open-source multi-physics package Elmer ( http://www.csc.fi/elmer/ ) and solves the full Stokes equations. Flow-induced anisotropy in ice is accounted for by an implementation of the C ontinuum-mechanical, A nisotropic F low model, based on an anisotropic F low E nhancement factor ("CAFFE model"). Steady-state simulations for present-day climate conditions are conducted. The main findings are: (i) the flow regime at Dome Fuji is a complex superposition of vertical compression, horizontal extension and bed-parallel shear; (ii) for an assumed geothermal heat flux of 60 mW m −2 the basal temperature at Dome Fuji reaches the pressure melting point and the basal melting rate is ~0.35 mm a −1 (iii) in agreement with observational data, the fabric shows a strong single maximum at Dome Fuji, and the age of the ice is decreased compared to an isotropic scenario; (iv) as a consequence of spatially variable basal melting conditions, the basal age tends to be smaller where the ice is thicker and larger where the ice is thinner. The latter result is of great relevance for the consideration of a future drill site in the area. Article in Journal/Newspaper Antarc* Antarctica The Cryosphere Directory of Open Access Journals: DOAJ Articles Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) The Cryosphere 5 2 495 508 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 H. Seddik R. Greve T. Zwinger L. Placidi A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
A three-dimensional, thermo-mechanically coupled ice flow model with induced anisotropy has been applied to a ~200 × 200 km domain around the Dome Fuji drill site, Antarctica. The model ("Elmer/Ice") is based on the open-source multi-physics package Elmer ( http://www.csc.fi/elmer/ ) and solves the full Stokes equations. Flow-induced anisotropy in ice is accounted for by an implementation of the C ontinuum-mechanical, A nisotropic F low model, based on an anisotropic F low E nhancement factor ("CAFFE model"). Steady-state simulations for present-day climate conditions are conducted. The main findings are: (i) the flow regime at Dome Fuji is a complex superposition of vertical compression, horizontal extension and bed-parallel shear; (ii) for an assumed geothermal heat flux of 60 mW m −2 the basal temperature at Dome Fuji reaches the pressure melting point and the basal melting rate is ~0.35 mm a −1 (iii) in agreement with observational data, the fabric shows a strong single maximum at Dome Fuji, and the age of the ice is decreased compared to an isotropic scenario; (iv) as a consequence of spatially variable basal melting conditions, the basal age tends to be smaller where the ice is thicker and larger where the ice is thinner. The latter result is of great relevance for the consideration of a future drill site in the area. |
format |
Article in Journal/Newspaper |
author |
H. Seddik R. Greve T. Zwinger L. Placidi |
author_facet |
H. Seddik R. Greve T. Zwinger L. Placidi |
author_sort |
H. Seddik |
title |
A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution |
title_short |
A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution |
title_full |
A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution |
title_fullStr |
A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution |
title_full_unstemmed |
A full Stokes ice flow model for the vicinity of Dome Fuji, Antarctica, with induced anisotropy and fabric evolution |
title_sort |
full stokes ice flow model for the vicinity of dome fuji, antarctica, with induced anisotropy and fabric evolution |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/tc-5-495-2011 https://doaj.org/article/5e80b2e577f14093a46567c9154d3061 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Dome Fuji |
geographic_facet |
Dome Fuji |
genre |
Antarc* Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctica The Cryosphere |
op_source |
The Cryosphere, Vol 5, Iss 2, Pp 495-508 (2011) |
op_relation |
http://www.the-cryosphere.net/5/495/2011/tc-5-495-2011.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-5-495-2011 1994-0416 1994-0424 https://doaj.org/article/5e80b2e577f14093a46567c9154d3061 |
op_doi |
https://doi.org/10.5194/tc-5-495-2011 |
container_title |
The Cryosphere |
container_volume |
5 |
container_issue |
2 |
container_start_page |
495 |
op_container_end_page |
508 |
_version_ |
1766007900656893952 |