Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica
The diagnostic, dynamic/thermodynamic ice shelf model Finite Element Shallow Shelf Approximation Code (FESSACODE) is applied to the Ross Ice Shelf. We simulate the present ice flow which results from the ice thickness distribution, the inflow at the grounding line, and the surface and bottom tempera...
Published in: | Journal of Geophysical Research: Earth Surface |
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Online Access: | http://hdl.handle.net/2115/29714 https://doi.org/10.1029/2004JF000170 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/29714 2023-05-15T13:55:39+02:00 Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica Humbert, Angelika Greve, Ralf Hutter, Kolumban http://hdl.handle.net/2115/29714 https://doi.org/10.1029/2004JF000170 eng eng American Geophysical Union http://hdl.handle.net/2115/29714 Journal of Geophysical Research, 110(f4): F04022 http://dx.doi.org/10.1029/2004JF000170 An edited version of this paper was published by AGU. Copyright 2005 American Geophysical Union. Humbert, Angelika, Greve, Ralf, Hutter, Kolumban, (2005), Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica, Journal of Geophysical Research, 110, F04022, 10.1029/2004JF000170. To view the published open abstract, go to http://dx.doi.org/10.1029/2004JF000170. ice shelf flow Ross Ice Shelf shallow shelf approximation 452.96 article (author version) fthokunivhus https://doi.org/10.1029/2004JF000170 2022-11-18T01:01:32Z The diagnostic, dynamic/thermodynamic ice shelf model Finite Element Shallow Shelf Approximation Code (FESSACODE) is applied to the Ross Ice Shelf. We simulate the present ice flow which results from the ice thickness distribution, the inflow at the grounding line, and the surface and bottom temperatures and compare results with measured flow velocities. Our reference simulation reproduces the general flow pattern and the magnitudes of the flow velocities reasonably well. The ice flow is found to be very sensitive to the flow enhancement factor, the ice thickness, and the ice temperature but robust against inflow velocities from ice streams, glaciers, and ice rises. The ice rises (Roosevelt Island and Crary Ice Rise) stabilize the ice shelf by significantly decreasing the flow velocities for the entire ice shelf area. The ice shelf is susceptible to global warming in that a 2°C surface warming entails an increase of the flow velocities by a factor 1.25, whereas a 10°C warming leads to an increase by a factor 3.1. Article in Journal/Newspaper Antarc* Antarctica Ice Shelf Roosevelt Island Ross Ice Shelf Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Crary Ice Rise ENVELOPE(-172.500,-172.500,-82.933,-82.933) Roosevelt Island ENVELOPE(-162.000,-162.000,-79.283,-79.283) Ross Ice Shelf Journal of Geophysical Research: Earth Surface 110 F4 n/a n/a |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
ice shelf flow Ross Ice Shelf shallow shelf approximation 452.96 |
spellingShingle |
ice shelf flow Ross Ice Shelf shallow shelf approximation 452.96 Humbert, Angelika Greve, Ralf Hutter, Kolumban Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica |
topic_facet |
ice shelf flow Ross Ice Shelf shallow shelf approximation 452.96 |
description |
The diagnostic, dynamic/thermodynamic ice shelf model Finite Element Shallow Shelf Approximation Code (FESSACODE) is applied to the Ross Ice Shelf. We simulate the present ice flow which results from the ice thickness distribution, the inflow at the grounding line, and the surface and bottom temperatures and compare results with measured flow velocities. Our reference simulation reproduces the general flow pattern and the magnitudes of the flow velocities reasonably well. The ice flow is found to be very sensitive to the flow enhancement factor, the ice thickness, and the ice temperature but robust against inflow velocities from ice streams, glaciers, and ice rises. The ice rises (Roosevelt Island and Crary Ice Rise) stabilize the ice shelf by significantly decreasing the flow velocities for the entire ice shelf area. The ice shelf is susceptible to global warming in that a 2°C surface warming entails an increase of the flow velocities by a factor 1.25, whereas a 10°C warming leads to an increase by a factor 3.1. |
format |
Article in Journal/Newspaper |
author |
Humbert, Angelika Greve, Ralf Hutter, Kolumban |
author_facet |
Humbert, Angelika Greve, Ralf Hutter, Kolumban |
author_sort |
Humbert, Angelika |
title |
Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica |
title_short |
Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica |
title_full |
Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica |
title_fullStr |
Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica |
title_full_unstemmed |
Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica |
title_sort |
parameter sensitivity studies for the ice flow of the ross ice shelf, antarctica |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/2115/29714 https://doi.org/10.1029/2004JF000170 |
long_lat |
ENVELOPE(-172.500,-172.500,-82.933,-82.933) ENVELOPE(-162.000,-162.000,-79.283,-79.283) |
geographic |
Crary Ice Rise Roosevelt Island Ross Ice Shelf |
geographic_facet |
Crary Ice Rise Roosevelt Island Ross Ice Shelf |
genre |
Antarc* Antarctica Ice Shelf Roosevelt Island Ross Ice Shelf |
genre_facet |
Antarc* Antarctica Ice Shelf Roosevelt Island Ross Ice Shelf |
op_relation |
http://hdl.handle.net/2115/29714 Journal of Geophysical Research, 110(f4): F04022 http://dx.doi.org/10.1029/2004JF000170 |
op_rights |
An edited version of this paper was published by AGU. Copyright 2005 American Geophysical Union. Humbert, Angelika, Greve, Ralf, Hutter, Kolumban, (2005), Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica, Journal of Geophysical Research, 110, F04022, 10.1029/2004JF000170. To view the published open abstract, go to http://dx.doi.org/10.1029/2004JF000170. |
op_doi |
https://doi.org/10.1029/2004JF000170 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
110 |
container_issue |
F4 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766262436194680832 |