An ice-shelf model test based on the Ross ice shelf
A standard numerical experiment featuring the Ross Ice Shelf, Antarctica, is presented as a test package for the development and intercomparison of ice-shelf models. The emphasis of this package is solution of stress-equilibrium equations for an ice-shelf velocity consistent with present observation...
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ftportlandstate:oai:pdxscholar.library.pdx.edu:geology_fac-1031 2023-05-15T13:58:46+02:00 An ice-shelf model test based on the Ross ice shelf MacAyeal, D. R. Rommelaere, V. Huybrechts, P. Hulbe, Christina L. Determann, J. Ritz, C. 1996-01-01T08:00:00Z application/pdf https://pdxscholar.library.pdx.edu/geology_fac/32 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1031&context=geology_fac unknown PDXScholar https://pdxscholar.library.pdx.edu/geology_fac/32 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1031&context=geology_fac Geology Faculty Publications and Presentations Ice sheets -- Antarctica Glaciers -- Antarctica Ice shelves -- Antarctica Glaciers -- Antarctica -- Ross Ice Shelf Geology text 1996 ftportlandstate 2022-01-09T19:24:25Z A standard numerical experiment featuring the Ross Ice Shelf, Antarctica, is presented as a test package for the development and intercomparison of ice-shelf models. The emphasis of this package is solution of stress-equilibrium equations for an ice-shelf velocity consistent with present observations. As a demonstration, we compare five independently developed ice-shelf models based on finite-difference and finite-element methods. Our results suggest that there is little difference between finite-element and finite-difference methods in capturing the basic, large-scale flow features of the ice shelf. We additionally show that the fit between model and observed velocity depends strongly on the ice-shelf temperature field for which there is presently little observational control. The main differences between model results are due to the equations being solved, the boundary conditions at the ice front and the discretization method (finite element vs. finite difference) Text Antarc* Antarctica Ice Shelf Ice Shelves Ross Ice Shelf Portland State University: PDXScholar Ross Ice Shelf |
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Open Polar |
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Portland State University: PDXScholar |
op_collection_id |
ftportlandstate |
language |
unknown |
topic |
Ice sheets -- Antarctica Glaciers -- Antarctica Ice shelves -- Antarctica Glaciers -- Antarctica -- Ross Ice Shelf Geology |
spellingShingle |
Ice sheets -- Antarctica Glaciers -- Antarctica Ice shelves -- Antarctica Glaciers -- Antarctica -- Ross Ice Shelf Geology MacAyeal, D. R. Rommelaere, V. Huybrechts, P. Hulbe, Christina L. Determann, J. Ritz, C. An ice-shelf model test based on the Ross ice shelf |
topic_facet |
Ice sheets -- Antarctica Glaciers -- Antarctica Ice shelves -- Antarctica Glaciers -- Antarctica -- Ross Ice Shelf Geology |
description |
A standard numerical experiment featuring the Ross Ice Shelf, Antarctica, is presented as a test package for the development and intercomparison of ice-shelf models. The emphasis of this package is solution of stress-equilibrium equations for an ice-shelf velocity consistent with present observations. As a demonstration, we compare five independently developed ice-shelf models based on finite-difference and finite-element methods. Our results suggest that there is little difference between finite-element and finite-difference methods in capturing the basic, large-scale flow features of the ice shelf. We additionally show that the fit between model and observed velocity depends strongly on the ice-shelf temperature field for which there is presently little observational control. The main differences between model results are due to the equations being solved, the boundary conditions at the ice front and the discretization method (finite element vs. finite difference) |
format |
Text |
author |
MacAyeal, D. R. Rommelaere, V. Huybrechts, P. Hulbe, Christina L. Determann, J. Ritz, C. |
author_facet |
MacAyeal, D. R. Rommelaere, V. Huybrechts, P. Hulbe, Christina L. Determann, J. Ritz, C. |
author_sort |
MacAyeal, D. R. |
title |
An ice-shelf model test based on the Ross ice shelf |
title_short |
An ice-shelf model test based on the Ross ice shelf |
title_full |
An ice-shelf model test based on the Ross ice shelf |
title_fullStr |
An ice-shelf model test based on the Ross ice shelf |
title_full_unstemmed |
An ice-shelf model test based on the Ross ice shelf |
title_sort |
ice-shelf model test based on the ross ice shelf |
publisher |
PDXScholar |
publishDate |
1996 |
url |
https://pdxscholar.library.pdx.edu/geology_fac/32 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1031&context=geology_fac |
geographic |
Ross Ice Shelf |
geographic_facet |
Ross Ice Shelf |
genre |
Antarc* Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
genre_facet |
Antarc* Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
op_source |
Geology Faculty Publications and Presentations |
op_relation |
https://pdxscholar.library.pdx.edu/geology_fac/32 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1031&context=geology_fac |
_version_ |
1766267102975492096 |