Assessing the subglacial lake coverage of Antarctica
Lakes beneath the Antarctic Ice Sheet are known to decrease traction at the ice base and therefore can have a great impact on ice dynamics. However, the total extent of Antarctic subglacial lakes is still unknown. We address this issue by combining modeling and remote-sensing strategies to predict p...
Published in: | Annals of Glaciology |
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Cambridge University Press
2016
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Online Access: | https://doi.org/10.1017/aog.2016.23 https://doaj.org/article/4be52aaf1b0c4ce78953fe72b2d3a278 |
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ftdoajarticles:oai:doaj.org/article:4be52aaf1b0c4ce78953fe72b2d3a278 2023-05-15T13:29:34+02:00 Assessing the subglacial lake coverage of Antarctica Sebastian Goeller Daniel Steinhage Malte Thoma Klaus Grosfeld 2016-07-01T00:00:00Z https://doi.org/10.1017/aog.2016.23 https://doaj.org/article/4be52aaf1b0c4ce78953fe72b2d3a278 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0260305516000239/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2016.23 0260-3055 1727-5644 https://doaj.org/article/4be52aaf1b0c4ce78953fe72b2d3a278 Annals of Glaciology, Vol 57, Pp 109-117 (2016) Antarctic glaciology radio-echo sounding subglacial hydrology subglacial lakes Meteorology. Climatology QC851-999 article 2016 ftdoajarticles https://doi.org/10.1017/aog.2016.23 2023-03-12T01:31:57Z Lakes beneath the Antarctic Ice Sheet are known to decrease traction at the ice base and therefore can have a great impact on ice dynamics. However, the total extent of Antarctic subglacial lakes is still unknown. We address this issue by combining modeling and remote-sensing strategies to predict potential lake locations using the general hydraulic potential equation. We are able to reproduce the majority of known lakes, as well as predict the existence of many new and so far undetected potential lakes. To validate our predictions, we analyzed ice-penetrating radar profiles from radio-echo sounding flights acquired over 1994–2013 in Dronning Maud Land, East Antarctica, and this led to the identification of 31 new subglacial lakes. Based on these findings, we estimate the total number of Antarctic subglacial lakes to be ~1300, a factor of three higher than the total number of lakes discovered to date. We estimate that only ~30% of all Antarctic subglacial lakes and ~65% of the total estimated lake-covered area have been discovered, and that lakes account for 0.6% of the Antarctic ice/bed interface. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic East Antarctica Dronning Maud Land Annals of Glaciology 57 72 109 117 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic glaciology radio-echo sounding subglacial hydrology subglacial lakes Meteorology. Climatology QC851-999 |
spellingShingle |
Antarctic glaciology radio-echo sounding subglacial hydrology subglacial lakes Meteorology. Climatology QC851-999 Sebastian Goeller Daniel Steinhage Malte Thoma Klaus Grosfeld Assessing the subglacial lake coverage of Antarctica |
topic_facet |
Antarctic glaciology radio-echo sounding subglacial hydrology subglacial lakes Meteorology. Climatology QC851-999 |
description |
Lakes beneath the Antarctic Ice Sheet are known to decrease traction at the ice base and therefore can have a great impact on ice dynamics. However, the total extent of Antarctic subglacial lakes is still unknown. We address this issue by combining modeling and remote-sensing strategies to predict potential lake locations using the general hydraulic potential equation. We are able to reproduce the majority of known lakes, as well as predict the existence of many new and so far undetected potential lakes. To validate our predictions, we analyzed ice-penetrating radar profiles from radio-echo sounding flights acquired over 1994–2013 in Dronning Maud Land, East Antarctica, and this led to the identification of 31 new subglacial lakes. Based on these findings, we estimate the total number of Antarctic subglacial lakes to be ~1300, a factor of three higher than the total number of lakes discovered to date. We estimate that only ~30% of all Antarctic subglacial lakes and ~65% of the total estimated lake-covered area have been discovered, and that lakes account for 0.6% of the Antarctic ice/bed interface. |
format |
Article in Journal/Newspaper |
author |
Sebastian Goeller Daniel Steinhage Malte Thoma Klaus Grosfeld |
author_facet |
Sebastian Goeller Daniel Steinhage Malte Thoma Klaus Grosfeld |
author_sort |
Sebastian Goeller |
title |
Assessing the subglacial lake coverage of Antarctica |
title_short |
Assessing the subglacial lake coverage of Antarctica |
title_full |
Assessing the subglacial lake coverage of Antarctica |
title_fullStr |
Assessing the subglacial lake coverage of Antarctica |
title_full_unstemmed |
Assessing the subglacial lake coverage of Antarctica |
title_sort |
assessing the subglacial lake coverage of antarctica |
publisher |
Cambridge University Press |
publishDate |
2016 |
url |
https://doi.org/10.1017/aog.2016.23 https://doaj.org/article/4be52aaf1b0c4ce78953fe72b2d3a278 |
geographic |
Antarctic The Antarctic East Antarctica Dronning Maud Land |
geographic_facet |
Antarctic The Antarctic East Antarctica Dronning Maud Land |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
op_source |
Annals of Glaciology, Vol 57, Pp 109-117 (2016) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0260305516000239/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2016.23 0260-3055 1727-5644 https://doaj.org/article/4be52aaf1b0c4ce78953fe72b2d3a278 |
op_doi |
https://doi.org/10.1017/aog.2016.23 |
container_title |
Annals of Glaciology |
container_volume |
57 |
container_issue |
72 |
container_start_page |
109 |
op_container_end_page |
117 |
_version_ |
1766001264744726528 |