A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps
The high-Alpine ice-core drilling site Colle Gnifetti (CG), Monte Rosa, Swiss/Italian Alps, provides climate records over the last millennium and beyond. However, the full exploitation of the oldest part of the existing ice cores requires complementary knowledge of the intricate glacio-meteorologica...
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Online Access: | http://hdl.handle.net/10278/3745370 https://doi.org/10.1017/jog.2019.82 |
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ftuniveneziairis:oai:iris.unive.it:10278/3745370 2024-04-14T08:13:02+00:00 A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps Carlo Licciulli Pascal Bohleber Josef Lier Olivier Gagliardini Martin Hoelzle Olaf Eisen Licciulli, Carlo Bohleber, Pascal Lier, Josef Gagliardini, Olivier Hoelzle, Martin Eisen, Olaf 2019 http://hdl.handle.net/10278/3745370 https://doi.org/10.1017/jog.2019.82 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000509742700004 volume:66 issue:255 firstpage:35 lastpage:48 numberofpages:14 journal:JOURNAL OF GLACIOLOGY http://hdl.handle.net/10278/3745370 doi:10.1017/jog.2019.82 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85078440744 info:eu-repo/semantics/openAccess Glacier modeling ice dynamic mountain glacier paleoclimate Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2019 ftuniveneziairis https://doi.org/10.1017/jog.2019.82 2024-03-21T18:18:29Z The high-Alpine ice-core drilling site Colle Gnifetti (CG), Monte Rosa, Swiss/Italian Alps, provides climate records over the last millennium and beyond. However, the full exploitation of the oldest part of the existing ice cores requires complementary knowledge of the intricate glacio-meteorological settings, including glacier dynamics. Here, we present new ice-flow modeling studies of CG, focused on characterizing the flow at two neighboring drill sites in the eastern part of the glacier. The3-D full Stokes ice-flow model is thermo-mechanically coupled and includes firn rheology, firn densification and enthalpy transport, and is implemented using the finite element software Elmer/Ice. Measurements of surface velocities, accumulation, borehole inclination, density and englacial temperatures are used to validate the model output. We calculate backward trajectories and map the catchment areas. This constrains, for the first time at this site, the so-called upstream effects for the stable water isotope time series of the two ice cores drilled in 2005 and 2013. The model also provides a 3-D age field of the glacier and independent ice-core chronologies for five ice-core sites. Model results are a valuable addition to the existing glaciological and ice-core datasets. This especially concerns the quantitative estimate of upstream conditions affecting the interpretation of the deep ice-core layers. Article in Journal/Newspaper ice core Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Monte Rosa ENVELOPE(162.850,162.850,-70.917,-70.917) Journal of Glaciology 66 255 35 48 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Glacier modeling ice dynamic mountain glacier paleoclimate Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Glacier modeling ice dynamic mountain glacier paleoclimate Settore GEO/08 - Geochimica e Vulcanologia Carlo Licciulli Pascal Bohleber Josef Lier Olivier Gagliardini Martin Hoelzle Olaf Eisen A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps |
topic_facet |
Glacier modeling ice dynamic mountain glacier paleoclimate Settore GEO/08 - Geochimica e Vulcanologia |
description |
The high-Alpine ice-core drilling site Colle Gnifetti (CG), Monte Rosa, Swiss/Italian Alps, provides climate records over the last millennium and beyond. However, the full exploitation of the oldest part of the existing ice cores requires complementary knowledge of the intricate glacio-meteorological settings, including glacier dynamics. Here, we present new ice-flow modeling studies of CG, focused on characterizing the flow at two neighboring drill sites in the eastern part of the glacier. The3-D full Stokes ice-flow model is thermo-mechanically coupled and includes firn rheology, firn densification and enthalpy transport, and is implemented using the finite element software Elmer/Ice. Measurements of surface velocities, accumulation, borehole inclination, density and englacial temperatures are used to validate the model output. We calculate backward trajectories and map the catchment areas. This constrains, for the first time at this site, the so-called upstream effects for the stable water isotope time series of the two ice cores drilled in 2005 and 2013. The model also provides a 3-D age field of the glacier and independent ice-core chronologies for five ice-core sites. Model results are a valuable addition to the existing glaciological and ice-core datasets. This especially concerns the quantitative estimate of upstream conditions affecting the interpretation of the deep ice-core layers. |
author2 |
Licciulli, Carlo Bohleber, Pascal Lier, Josef Gagliardini, Olivier Hoelzle, Martin Eisen, Olaf |
format |
Article in Journal/Newspaper |
author |
Carlo Licciulli Pascal Bohleber Josef Lier Olivier Gagliardini Martin Hoelzle Olaf Eisen |
author_facet |
Carlo Licciulli Pascal Bohleber Josef Lier Olivier Gagliardini Martin Hoelzle Olaf Eisen |
author_sort |
Carlo Licciulli |
title |
A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps |
title_short |
A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps |
title_full |
A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps |
title_fullStr |
A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps |
title_full_unstemmed |
A full Stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-Alpine drilling site Colle Gnifetti, Swiss/Italian Alps |
title_sort |
full stokes ice-flow model to assist the interpretation of millennial-scale ice cores at the high-alpine drilling site colle gnifetti, swiss/italian alps |
publishDate |
2019 |
url |
http://hdl.handle.net/10278/3745370 https://doi.org/10.1017/jog.2019.82 |
long_lat |
ENVELOPE(162.850,162.850,-70.917,-70.917) |
geographic |
Monte Rosa |
geographic_facet |
Monte Rosa |
genre |
ice core |
genre_facet |
ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000509742700004 volume:66 issue:255 firstpage:35 lastpage:48 numberofpages:14 journal:JOURNAL OF GLACIOLOGY http://hdl.handle.net/10278/3745370 doi:10.1017/jog.2019.82 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85078440744 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/jog.2019.82 |
container_title |
Journal of Glaciology |
container_volume |
66 |
container_issue |
255 |
container_start_page |
35 |
op_container_end_page |
48 |
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1796310908454043648 |