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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ftdoajarticles:oai:doaj.org/article:5a7e03d9e0e2478da6d166e9851daf00 2023-05-15T14:03:12+02:00 Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” N. B. Karlsson T. Binder G. Eagles V. Helm F. Pattyn B. Van Liefferinge O. Eisen 2018-07-01T00:00:00Z https://doi.org/10.5194/tc-12-2413-2018 https://doaj.org/article/5a7e03d9e0e2478da6d166e9851daf00 EN eng Copernicus Publications https://www.the-cryosphere.net/12/2413/2018/tc-12-2413-2018.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-12-2413-2018 1994-0416 1994-0424 https://doaj.org/article/5a7e03d9e0e2478da6d166e9851daf00 The Cryosphere, Vol 12, Pp 2413-2424 (2018) Environmental sciences GE1-350 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/tc-12-2413-2018 2022-12-31T02:40:49Z 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 Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic East Antarctica Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dome Fuji Station ENVELOPE(39.703,39.703,-77.317,-77.317) The Cryosphere 12 7 2413 2424 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 N. B. Karlsson T. Binder G. Eagles V. Helm F. Pattyn B. Van Liefferinge O. Eisen Glaciological characteristics in the Dome Fuji region and new assessment for “Oldest Ice” |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
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 |
N. B. Karlsson T. Binder G. Eagles V. Helm F. Pattyn B. Van Liefferinge O. Eisen |
author_facet |
N. B. Karlsson T. Binder G. Eagles V. Helm F. Pattyn B. Van Liefferinge O. Eisen |
author_sort |
N. B. Karlsson |
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” |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-2413-2018 https://doaj.org/article/5a7e03d9e0e2478da6d166e9851daf00 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(39.703,39.703,-77.317,-77.317) |
geographic |
Antarctic The Antarctic East Antarctica Dome Fuji Dome Fuji Station |
geographic_facet |
Antarctic The Antarctic East Antarctica Dome Fuji Dome Fuji Station |
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 |
The Cryosphere, Vol 12, Pp 2413-2424 (2018) |
op_relation |
https://www.the-cryosphere.net/12/2413/2018/tc-12-2413-2018.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-12-2413-2018 1994-0416 1994-0424 https://doaj.org/article/5a7e03d9e0e2478da6d166e9851daf00 |
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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1766273760916144128 |