Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station)
Considered in this study are methodological issues of a detailed reconstruction of the time-dependent ice flow in a limited area in Dronning Maud Land, Antarctica. The nested domain of 600×400 km is located around Kohnen Station, where the deep drilling has been completed. The key point of our appro...
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ftawi:oai:epic.awi.de:17888 2024-09-15T17:42:55+00:00 Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) Rybak, Oleg Huybrechts, Philippe Pattyn, F. Steinhage, Daniel 2007 application/pdf https://epic.awi.de/id/eprint/17888/ https://epic.awi.de/id/eprint/17888/1/Ryb2007b.pdf https://hdl.handle.net/10013/epic.31527 https://hdl.handle.net/10013/epic.31527.d001 unknown https://epic.awi.de/id/eprint/17888/1/Ryb2007b.pdf https://hdl.handle.net/10013/epic.31527.d001 Rybak, O. , Huybrechts, P. , Pattyn, F. and Steinhage, D. orcid:0000-0003-4737-9751 (2007) Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) , Materialy Gliatsiologitcheskikh Issledovanij / Data of Glaciological Studies, 102 , pp. 3-11 . hdl:10013/epic.31527 EPIC3Materialy Gliatsiologitcheskikh Issledovanij / Data of Glaciological Studies, 102, pp. 3-11, ISSN: 0130-3686 Article peerRev 2007 ftawi 2024-06-24T04:00:13Z Considered in this study are methodological issues of a detailed reconstruction of the time-dependent ice flow in a limited area in Dronning Maud Land, Antarctica. The nested domain of 600×400 km is located around Kohnen Station, where the deep drilling has been completed. The key point of our approach to regional modeling consists in separation of the model macro- and regional scale ice dynamics. We couple a time-dependent 3-D comprehensive model of the whole Antarctic ice sheet employing Shallow Ice Approximation dynamics (Big Model, or BM) with a steady3state model of the incomplete second-order approximation (Small Model, or SM). All prognostic calculations take place within BM, which simulates evolution of the Antarctic ice sheet through eight glacial cycles. SM receives boundary conditions from BM at lateral boundaries through a transition zone to eliminate the effects of different spatial resolution (20 km in BM and 2.5 in SM), but there is no feedback between SM and BM. SM assimilates the up-to-date observational data on accumulation rate and bedrock topography. In the numerical experiments we reconstruct history of variations of the surface and bed topography, accumulation rate and 3-D velocity field in the nested domain. Model estimate of the surface velocity at Kohnen is close to the observational one. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Considered in this study are methodological issues of a detailed reconstruction of the time-dependent ice flow in a limited area in Dronning Maud Land, Antarctica. The nested domain of 600×400 km is located around Kohnen Station, where the deep drilling has been completed. The key point of our approach to regional modeling consists in separation of the model macro- and regional scale ice dynamics. We couple a time-dependent 3-D comprehensive model of the whole Antarctic ice sheet employing Shallow Ice Approximation dynamics (Big Model, or BM) with a steady3state model of the incomplete second-order approximation (Small Model, or SM). All prognostic calculations take place within BM, which simulates evolution of the Antarctic ice sheet through eight glacial cycles. SM receives boundary conditions from BM at lateral boundaries through a transition zone to eliminate the effects of different spatial resolution (20 km in BM and 2.5 in SM), but there is no feedback between SM and BM. SM assimilates the up-to-date observational data on accumulation rate and bedrock topography. In the numerical experiments we reconstruct history of variations of the surface and bed topography, accumulation rate and 3-D velocity field in the nested domain. Model estimate of the surface velocity at Kohnen is close to the observational one. |
format |
Article in Journal/Newspaper |
author |
Rybak, Oleg Huybrechts, Philippe Pattyn, F. Steinhage, Daniel |
spellingShingle |
Rybak, Oleg Huybrechts, Philippe Pattyn, F. Steinhage, Daniel Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) |
author_facet |
Rybak, Oleg Huybrechts, Philippe Pattyn, F. Steinhage, Daniel |
author_sort |
Rybak, Oleg |
title |
Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) |
title_short |
Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) |
title_full |
Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) |
title_fullStr |
Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) |
title_full_unstemmed |
Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) |
title_sort |
regionalnaya model' dinamiki l'da. chast'1. opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii konen (in russian; regional ice-dynamic model. part 1. model description, performance of numerical experiments, and present-day ice-flow dynamics around kohnen station) |
publishDate |
2007 |
url |
https://epic.awi.de/id/eprint/17888/ https://epic.awi.de/id/eprint/17888/1/Ryb2007b.pdf https://hdl.handle.net/10013/epic.31527 https://hdl.handle.net/10013/epic.31527.d001 |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land Ice Sheet |
op_source |
EPIC3Materialy Gliatsiologitcheskikh Issledovanij / Data of Glaciological Studies, 102, pp. 3-11, ISSN: 0130-3686 |
op_relation |
https://epic.awi.de/id/eprint/17888/1/Ryb2007b.pdf https://hdl.handle.net/10013/epic.31527.d001 Rybak, O. , Huybrechts, P. , Pattyn, F. and Steinhage, D. orcid:0000-0003-4737-9751 (2007) Regionalnaya model' dinamiki l'da. Chast'1. Opisaniye modeli, postanovka chislennykh eksperimentov i sovremennaya dinamika potoka v oksrestnostiakh stantsii Konen (in Russian; Regional ice-dynamic model. Part 1. Model description, performance of numerical experiments, and present-day ice-flow dynamics around Kohnen station) , Materialy Gliatsiologitcheskikh Issledovanij / Data of Glaciological Studies, 102 , pp. 3-11 . hdl:10013/epic.31527 |
_version_ |
1810489729743847424 |