Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet
Two basic approaches exist for describing advection in the ice sheet model. We proceed with.comparing traditional Eulerian approach with a rather new in glaciological applications Lagrangian one. Particle tracing in the ice sheet is required to deal with such problems as detailed ice dating,establis...
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ftawi:oai:epic.awi.de:19698 2023-05-15T13:39:47+02:00 Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet Rybak, Oleg Huybrechts, Philippe 2007 application/pdf https://epic.awi.de/id/eprint/19698/ https://epic.awi.de/id/eprint/19698/1/Huy2007c.pdf https://hdl.handle.net/10013/epic.31597 https://hdl.handle.net/10013/epic.31597.d001 unknown https://epic.awi.de/id/eprint/19698/1/Huy2007c.pdf https://hdl.handle.net/10013/epic.31597.d001 Rybak, O. and Huybrechts, P. (2007) Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet , Kryosfera Zemli, 11 (4), pp. 70-79 . hdl:10013/epic.31597 EPIC3Kryosfera Zemli, 11(4), pp. 70-79 Article peerRev 2007 ftawi 2021-12-24T15:33:04Z Two basic approaches exist for describing advection in the ice sheet model. We proceed with.comparing traditional Eulerian approach with a rather new in glaciological applications Lagrangian one. Particle tracing in the ice sheet is required to deal with such problems as detailed ice dating,establishing of isotopical composition, or distribution of any other conservative characteristic, which is advected with the ice flow. Within the frame of the Particle-in-Cell-(PlC) algorithm, a particle's trajectory is constructed by numerical interpolation as it moves through an evolving ice sheet within a regular 3D grid. The algorithm is conceptually straightforward, but demanding in terms of its practical implementation. The main advantage of the algorithm as compared to a pure Eulerian approach is that it is diffusion free, which makes it much more accurate in the lower part of the ice sheet. Application of PIC immediately yields the trajectories of the-particles, which is important for reconstruction of the flow peculiarities and the distribution of transported properties on isochronous surfaces. To implement it in the most effective way it is necessary to follow accurate balance between computational overhead and designed accuracy. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic |
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 |
Two basic approaches exist for describing advection in the ice sheet model. We proceed with.comparing traditional Eulerian approach with a rather new in glaciological applications Lagrangian one. Particle tracing in the ice sheet is required to deal with such problems as detailed ice dating,establishing of isotopical composition, or distribution of any other conservative characteristic, which is advected with the ice flow. Within the frame of the Particle-in-Cell-(PlC) algorithm, a particle's trajectory is constructed by numerical interpolation as it moves through an evolving ice sheet within a regular 3D grid. The algorithm is conceptually straightforward, but demanding in terms of its practical implementation. The main advantage of the algorithm as compared to a pure Eulerian approach is that it is diffusion free, which makes it much more accurate in the lower part of the ice sheet. Application of PIC immediately yields the trajectories of the-particles, which is important for reconstruction of the flow peculiarities and the distribution of transported properties on isochronous surfaces. To implement it in the most effective way it is necessary to follow accurate balance between computational overhead and designed accuracy. |
format |
Article in Journal/Newspaper |
author |
Rybak, Oleg Huybrechts, Philippe |
spellingShingle |
Rybak, Oleg Huybrechts, Philippe Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet |
author_facet |
Rybak, Oleg Huybrechts, Philippe |
author_sort |
Rybak, Oleg |
title |
Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet |
title_short |
Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet |
title_full |
Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet |
title_fullStr |
Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet |
title_full_unstemmed |
Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet |
title_sort |
lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli antarkticheskogo ledovogo shita (in russian), a lagrangian method of calculation of age and isotopic composition of ice in a 3-d model of the antarctic ice sheet |
publishDate |
2007 |
url |
https://epic.awi.de/id/eprint/19698/ https://epic.awi.de/id/eprint/19698/1/Huy2007c.pdf https://hdl.handle.net/10013/epic.31597 https://hdl.handle.net/10013/epic.31597.d001 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
EPIC3Kryosfera Zemli, 11(4), pp. 70-79 |
op_relation |
https://epic.awi.de/id/eprint/19698/1/Huy2007c.pdf https://hdl.handle.net/10013/epic.31597.d001 Rybak, O. and Huybrechts, P. (2007) Lagranzhev metod rascheta vozrasta i izotopnogo sostava lda v trekhmernoy modeli Antarkticheskogo ledovogo shita (in Russian), A Lagrangian method of calculation of age and isotopic composition of ice in a 3-D model of the Antarctic ice sheet , Kryosfera Zemli, 11 (4), pp. 70-79 . hdl:10013/epic.31597 |
_version_ |
1766124692125515776 |