Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr
We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow model to invert for accum...
Main Authors: | , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/270579 https://dipot.ulb.ac.be/dspace/bitstream/2013/270579/1/doi_254206.pdf |
id |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/270579 |
---|---|
record_format |
openpolar |
spelling |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/270579 2023-05-15T13:51:43+02:00 Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr Cavitte, Marie M.G.P. Parrenin, Frédéric Ritz, Catherine Young, A. Van Liefferinge, Brice Blankenship, Donald Frezzotti, Massimo Roberts, Jason J.L. 2018-04 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/270579 https://dipot.ulb.ac.be/dspace/bitstream/2013/270579/1/doi_254206.pdf en eng uri/info:doi/10.5194/tc-12-1401-2018 uri/info:scp/85045549664 https://dipot.ulb.ac.be/dspace/bitstream/2013/270579/1/doi_254206.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/270579 1 full-text file(s): info:eu-repo/semantics/openAccess The Cryosphere, 12 (4 Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2018 ftunivbruxelles 2022-06-12T21:44:35Z We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow model to invert for accumulation rates in the region. The shallowest four isochrones are then used to calculate paleoaccumulation rates between isochrone pairs using a 1-D assumption where horizontal advection is negligible in the time interval of each layer. We observe that the large-scale (100sĝ€km) surface accumulation gradient is spatially stable through the last 73ĝ€kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10ĝ€sĝ€km) accumulation variations linked to snow redistribution at the surface, due to changes in its slope and curvature in the prevailing wind direction that remain spatially stationary since the last glacial. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctica East Antarctica The Cryosphere DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) East Antarctica |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications |
spellingShingle |
Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications Cavitte, Marie M.G.P. Parrenin, Frédéric Ritz, Catherine Young, A. Van Liefferinge, Brice Blankenship, Donald Frezzotti, Massimo Roberts, Jason J.L. Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
topic_facet |
Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications |
description |
We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow model to invert for accumulation rates in the region. The shallowest four isochrones are then used to calculate paleoaccumulation rates between isochrone pairs using a 1-D assumption where horizontal advection is negligible in the time interval of each layer. We observe that the large-scale (100sĝ€km) surface accumulation gradient is spatially stable through the last 73ĝ€kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10ĝ€sĝ€km) accumulation variations linked to snow redistribution at the surface, due to changes in its slope and curvature in the prevailing wind direction that remain spatially stationary since the last glacial. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Cavitte, Marie M.G.P. Parrenin, Frédéric Ritz, Catherine Young, A. Van Liefferinge, Brice Blankenship, Donald Frezzotti, Massimo Roberts, Jason J.L. |
author_facet |
Cavitte, Marie M.G.P. Parrenin, Frédéric Ritz, Catherine Young, A. Van Liefferinge, Brice Blankenship, Donald Frezzotti, Massimo Roberts, Jason J.L. |
author_sort |
Cavitte, Marie M.G.P. |
title |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_short |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_full |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_fullStr |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_full_unstemmed |
Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
title_sort |
accumulation patterns around dome c, east antarctica, in the last 73 kyr |
publishDate |
2018 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/270579 https://dipot.ulb.ac.be/dspace/bitstream/2013/270579/1/doi_254206.pdf |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctica East Antarctica The Cryosphere |
op_source |
The Cryosphere, 12 (4 |
op_relation |
uri/info:doi/10.5194/tc-12-1401-2018 uri/info:scp/85045549664 https://dipot.ulb.ac.be/dspace/bitstream/2013/270579/1/doi_254206.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/270579 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1766255749622661120 |