Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice”
A key objective in palaeo-climatology is the retrieval of a continuous Antarctic ice-core record dating back 1.5 Ma. The identification of a suitable Antarctic site requires sufficient knowledge of the subglacial landscape beneath the Antarctic Ice Sheet. Here, we present new ice thickness informati...
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Online Access: | https://epic.awi.de/id/eprint/47676/ https://epic.awi.de/id/eprint/47676/1/Karlsson_etal_2018_TC_OldestIce.pdf https://doi.org/10.5194/tc-12-2413-2018 https://hdl.handle.net/10013/epic.c347a7b3-cc66-431d-a41a-4494e50a0baf |
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ftawi:oai:epic.awi.de:47676 2024-09-15T17:43:08+00:00 Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” Karlsson, Nanna B. Binder, Tobias Eagles, Graeme Helm, Veit Pattyn, Frank Van Liefferinge, Brice Eisen, Olaf 2018 application/pdf https://epic.awi.de/id/eprint/47676/ https://epic.awi.de/id/eprint/47676/1/Karlsson_etal_2018_TC_OldestIce.pdf https://doi.org/10.5194/tc-12-2413-2018 https://hdl.handle.net/10013/epic.c347a7b3-cc66-431d-a41a-4494e50a0baf unknown https://epic.awi.de/id/eprint/47676/1/Karlsson_etal_2018_TC_OldestIce.pdf Karlsson, N. B. , Binder, T. , Eagles, G. orcid:0000-0001-5325-0810 , Helm, V. orcid:0000-0001-7788-9328 , Pattyn, F. , Van Liefferinge, B. and Eisen, O. orcid:0000-0002-6380-962X (2018) Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” , The Cryosphere, 12 (7), pp. 2413-2424 . doi:10.5194/tc-12-2413-2018 <https://doi.org/10.5194/tc-12-2413-2018> , hdl:10013/epic.c347a7b3-cc66-431d-a41a-4494e50a0baf EPIC3The Cryosphere, 12(7), pp. 2413-2424, ISSN: 1994-0424 Article isiRev 2018 ftawi https://doi.org/10.5194/tc-12-2413-2018 2024-06-24T04:19:47Z A key objective in palaeo-climatology is the retrieval of a continuous Antarctic ice-core record dating back 1.5 Ma. The identification of a suitable Antarctic site requires sufficient knowledge of the subglacial landscape beneath the Antarctic Ice Sheet. Here, we present new ice thickness information from the Dome Fuji region, East Antarctica, based on airborne radar surveys conducted during the 2014/15 and 2016/17 southern summers. Compared to previous maps of the region, the new dataset shows a more complex landscape with networks of valleys and mountain plateaus. We use the new dataset as input in a thermokinematic model that incorporates uncertainties in geothermal heat flux values in order to improve the predictions of potential ice-core sites. Our results show that especially the region immediately south of Dome Fuji station persists as a good candidate site for obtaining an old ice core. An initial assessment of basal conditions revealed the existence of what appears to be subglacial lakes. Further radar data analysis shows overall high continuity of layer stratigraphy in the region. This indicates that extending the age–depth information from the Dome Fuji ice core to a new ice-core drill site is a viable option. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet The Cryosphere Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) The Cryosphere 12 7 2413 2424 |
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 |
A key objective in palaeo-climatology is the retrieval of a continuous Antarctic ice-core record dating back 1.5 Ma. The identification of a suitable Antarctic site requires sufficient knowledge of the subglacial landscape beneath the Antarctic Ice Sheet. Here, we present new ice thickness information from the Dome Fuji region, East Antarctica, based on airborne radar surveys conducted during the 2014/15 and 2016/17 southern summers. Compared to previous maps of the region, the new dataset shows a more complex landscape with networks of valleys and mountain plateaus. We use the new dataset as input in a thermokinematic model that incorporates uncertainties in geothermal heat flux values in order to improve the predictions of potential ice-core sites. Our results show that especially the region immediately south of Dome Fuji station persists as a good candidate site for obtaining an old ice core. An initial assessment of basal conditions revealed the existence of what appears to be subglacial lakes. Further radar data analysis shows overall high continuity of layer stratigraphy in the region. This indicates that extending the age–depth information from the Dome Fuji ice core to a new ice-core drill site is a viable option. |
format |
Article in Journal/Newspaper |
author |
Karlsson, Nanna B. Binder, Tobias Eagles, Graeme Helm, Veit Pattyn, Frank Van Liefferinge, Brice Eisen, Olaf |
spellingShingle |
Karlsson, Nanna B. Binder, Tobias Eagles, Graeme Helm, Veit Pattyn, Frank Van Liefferinge, Brice Eisen, Olaf Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” |
author_facet |
Karlsson, Nanna B. Binder, Tobias Eagles, Graeme Helm, Veit Pattyn, Frank Van Liefferinge, Brice Eisen, Olaf |
author_sort |
Karlsson, Nanna B. |
title |
Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” |
title_short |
Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” |
title_full |
Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” |
title_fullStr |
Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” |
title_full_unstemmed |
Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” |
title_sort |
glaciological characteristics in the dome fuji region and new assessment for “oldest ice” |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47676/ https://epic.awi.de/id/eprint/47676/1/Karlsson_etal_2018_TC_OldestIce.pdf https://doi.org/10.5194/tc-12-2413-2018 https://hdl.handle.net/10013/epic.c347a7b3-cc66-431d-a41a-4494e50a0baf |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet The Cryosphere |
op_source |
EPIC3The Cryosphere, 12(7), pp. 2413-2424, ISSN: 1994-0424 |
op_relation |
https://epic.awi.de/id/eprint/47676/1/Karlsson_etal_2018_TC_OldestIce.pdf Karlsson, N. B. , Binder, T. , Eagles, G. orcid:0000-0001-5325-0810 , Helm, V. orcid:0000-0001-7788-9328 , Pattyn, F. , Van Liefferinge, B. and Eisen, O. orcid:0000-0002-6380-962X (2018) Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” , The Cryosphere, 12 (7), pp. 2413-2424 . doi:10.5194/tc-12-2413-2018 <https://doi.org/10.5194/tc-12-2413-2018> , hdl:10013/epic.c347a7b3-cc66-431d-a41a-4494e50a0baf |
op_doi |
https://doi.org/10.5194/tc-12-2413-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
7 |
container_start_page |
2413 |
op_container_end_page |
2424 |
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1810489976418205696 |