Recent advances in understanding Antarctic subglacial lakes and hydrology
It is now well documented that over 400 subglacial lakes exist across the bed of the Antarctic Ice Sheet. They comprise a variety of sizes and volumes (from the approx. 250 km long Lake Vostok to bodies of water less than 1 km in length), relate to a number of discrete topographic settings (from tho...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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ftpubmed:oai:pubmedcentral.nih.gov:4685968 2023-05-15T13:34:44+02:00 Recent advances in understanding Antarctic subglacial lakes and hydrology Siegert, Martin J. Ross, Neil Le Brocq, Anne M. 2016-01-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685968/ http://www.ncbi.nlm.nih.gov/pubmed/26667914 https://doi.org/10.1098/rsta.2014.0306 en eng The Royal Society Publishing http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685968/ http://www.ncbi.nlm.nih.gov/pubmed/26667914 http://dx.doi.org/10.1098/rsta.2014.0306 © 2015 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. CC-BY Articles Text 2016 ftpubmed https://doi.org/10.1098/rsta.2014.0306 2016-01-31T01:10:36Z It is now well documented that over 400 subglacial lakes exist across the bed of the Antarctic Ice Sheet. They comprise a variety of sizes and volumes (from the approx. 250 km long Lake Vostok to bodies of water less than 1 km in length), relate to a number of discrete topographic settings (from those contained within valleys to lakes that reside in broad flat terrain) and exhibit a range of dynamic behaviours (from ‘active’ lakes that periodically outburst some or all of their water to those isolated hydrologically for millions of years). Here we critique recent advances in our understanding of subglacial lakes, in particular since the last inventory in 2012. We show that within 3 years our knowledge of the hydrological processes at the ice-sheet base has advanced considerably. We describe evidence for further ‘active’ subglacial lakes, based on satellite observation of ice-surface changes, and discuss why detection of many ‘active’ lakes is not resolved in traditional radio-echo sounding methods. We go on to review evidence for large-scale subglacial water flow in Antarctica, including the discovery of ancient channels developed by former hydrological processes. We end by predicting areas where future discoveries may be possible, including the detection, measurement and significance of groundwater (i.e. water held beneath the ice-bed interface). Text Antarc* Antarctic Antarctica Ice Sheet PubMed Central (PMC) Antarctic Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) The Antarctic Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374 2059 20140306 |
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Articles Siegert, Martin J. Ross, Neil Le Brocq, Anne M. Recent advances in understanding Antarctic subglacial lakes and hydrology |
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description |
It is now well documented that over 400 subglacial lakes exist across the bed of the Antarctic Ice Sheet. They comprise a variety of sizes and volumes (from the approx. 250 km long Lake Vostok to bodies of water less than 1 km in length), relate to a number of discrete topographic settings (from those contained within valleys to lakes that reside in broad flat terrain) and exhibit a range of dynamic behaviours (from ‘active’ lakes that periodically outburst some or all of their water to those isolated hydrologically for millions of years). Here we critique recent advances in our understanding of subglacial lakes, in particular since the last inventory in 2012. We show that within 3 years our knowledge of the hydrological processes at the ice-sheet base has advanced considerably. We describe evidence for further ‘active’ subglacial lakes, based on satellite observation of ice-surface changes, and discuss why detection of many ‘active’ lakes is not resolved in traditional radio-echo sounding methods. We go on to review evidence for large-scale subglacial water flow in Antarctica, including the discovery of ancient channels developed by former hydrological processes. We end by predicting areas where future discoveries may be possible, including the detection, measurement and significance of groundwater (i.e. water held beneath the ice-bed interface). |
format |
Text |
author |
Siegert, Martin J. Ross, Neil Le Brocq, Anne M. |
author_facet |
Siegert, Martin J. Ross, Neil Le Brocq, Anne M. |
author_sort |
Siegert, Martin J. |
title |
Recent advances in understanding Antarctic subglacial lakes and hydrology |
title_short |
Recent advances in understanding Antarctic subglacial lakes and hydrology |
title_full |
Recent advances in understanding Antarctic subglacial lakes and hydrology |
title_fullStr |
Recent advances in understanding Antarctic subglacial lakes and hydrology |
title_full_unstemmed |
Recent advances in understanding Antarctic subglacial lakes and hydrology |
title_sort |
recent advances in understanding antarctic subglacial lakes and hydrology |
publisher |
The Royal Society Publishing |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685968/ http://www.ncbi.nlm.nih.gov/pubmed/26667914 https://doi.org/10.1098/rsta.2014.0306 |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) |
geographic |
Antarctic Lake Vostok The Antarctic |
geographic_facet |
Antarctic Lake Vostok The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685968/ http://www.ncbi.nlm.nih.gov/pubmed/26667914 http://dx.doi.org/10.1098/rsta.2014.0306 |
op_rights |
© 2015 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rsta.2014.0306 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
374 |
container_issue |
2059 |
container_start_page |
20140306 |
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1766056730279542784 |