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...
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Language: | English |
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Copernicus GmbH
2018
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ftunivtasmania:oai:eprints.utas.edu.au:39593 2023-05-15T13:42:39+02:00 Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr Cavitte, MGP Parrenin, F Ritz, C Young, A Van Liefferinge, B Blankenship, DD Frezzotti, M Roberts, JL 2018 application/pdf https://eprints.utas.edu.au/39593/ https://eprints.utas.edu.au/39593/1/131769%20-%20Accumulation%20patterns%20around%20Dome%20C,%20East%20Antarctica,%20in%20the%20last%2073%20kyr.pdf en eng Copernicus GmbH https://eprints.utas.edu.au/39593/1/131769%20-%20Accumulation%20patterns%20around%20Dome%20C,%20East%20Antarctica,%20in%20the%20last%2073%20kyr.pdf Cavitte, MGP, Parrenin, F, Ritz, C, Young, A, Van Liefferinge, B, Blankenship, DD, Frezzotti, M and Roberts, JL 2018 , 'Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr' , Cryosphere, vol. 12, no. 4 , pp. 1401-1414 , doi:10.5194/tc-12-1401-2018 <http://dx.doi.org/10.5194/tc-12-1401-2018>. Dome C Antarctica ice core Article PeerReviewed 2018 ftunivtasmania https://doi.org/10.5194/tc-12-1401-2018 2022-01-17T23:17:51Z 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 (100skm) surface accumulation gradient is spatially stable through the last 73kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10skm) 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. Article in Journal/Newspaper Antarc* Antarctica East Antarctica ice core University of Tasmania: UTas ePrints East Antarctica The Cryosphere 12 4 1401 1414 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Dome C Antarctica ice core |
spellingShingle |
Dome C Antarctica ice core Cavitte, MGP Parrenin, F Ritz, C Young, A Van Liefferinge, B Blankenship, DD Frezzotti, M Roberts, JL Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr |
topic_facet |
Dome C Antarctica ice core |
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 (100skm) surface accumulation gradient is spatially stable through the last 73kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10skm) 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. |
format |
Article in Journal/Newspaper |
author |
Cavitte, MGP Parrenin, F Ritz, C Young, A Van Liefferinge, B Blankenship, DD Frezzotti, M Roberts, JL |
author_facet |
Cavitte, MGP Parrenin, F Ritz, C Young, A Van Liefferinge, B Blankenship, DD Frezzotti, M Roberts, JL |
author_sort |
Cavitte, MGP |
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 |
publisher |
Copernicus GmbH |
publishDate |
2018 |
url |
https://eprints.utas.edu.au/39593/ https://eprints.utas.edu.au/39593/1/131769%20-%20Accumulation%20patterns%20around%20Dome%20C,%20East%20Antarctica,%20in%20the%20last%2073%20kyr.pdf |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctica East Antarctica ice core |
op_relation |
https://eprints.utas.edu.au/39593/1/131769%20-%20Accumulation%20patterns%20around%20Dome%20C,%20East%20Antarctica,%20in%20the%20last%2073%20kyr.pdf Cavitte, MGP, Parrenin, F, Ritz, C, Young, A, Van Liefferinge, B, Blankenship, DD, Frezzotti, M and Roberts, JL 2018 , 'Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr' , Cryosphere, vol. 12, no. 4 , pp. 1401-1414 , doi:10.5194/tc-12-1401-2018 <http://dx.doi.org/10.5194/tc-12-1401-2018>. |
op_doi |
https://doi.org/10.5194/tc-12-1401-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
4 |
container_start_page |
1401 |
op_container_end_page |
1414 |
_version_ |
1766170821615681536 |