Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf
Subglacial lakes are widespread beneath the Antarctic ice sheet but their control on ice sheet dynamics and their ability to harbour life remain poorly characterised. Here we present the evidence for a palaeo-subglacial lake on the Antarctic continental shelf. A distinct sediment facies recovered fr...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.873755 2023-05-15T13:44:47+02:00 Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf Kuhn, Gerhard Hillenbrand, Claus-Dieter Kasten, Sabine Smith, James A Nitsche, Frank-Oliver Frederichs, Thomas Wiers, Steffen Ehrmann, Werner Klages, Johann Philipp Mogollón, José M MEDIAN LATITUDE: -74.519219 * MEDIAN LONGITUDE: -103.905749 * SOUTH-BOUND LATITUDE: -74.799830 * WEST-BOUND LONGITUDE: -106.643160 * NORTH-BOUND LATITUDE: -74.356900 * EAST-BOUND LONGITUDE: -102.355160 * DATE/TIME START: 2006-03-13T18:19:00 * DATE/TIME END: 2010-03-16T16:59:00 2017-03-22 application/zip, 29 datasets https://doi.pangaea.de/10.1594/PANGAEA.873755 https://doi.org/10.1594/PANGAEA.873755 en eng PANGAEA Hillenbrand, Claus-Dieter; Kuhn, Gerhard; Smith, James A; Gohl, Karsten; Graham, Alastair G C; Larter, Robert D; Klages, Johann Philipp; Downey, Rachel; Moreton, Steven Grahame; Forwick, Matthias; Vaughan, David G (2013): Documentation of sediment core PS75/167-1. Alfred Wegener Institute - Polarstern core repository, PANGAEA, https://doi.org/10.1594/PANGAEA.754973 Hillenbrand, Claus-Dieter; Kuhn, Gerhard; Smith, James A; Gohl, Karsten; Graham, Alastair G C; Larter, Robert D; Klages, Johann Philipp; Downey, Rachel; Moreton, Steven Grahame; Forwick, Matthias; Vaughan, David G (2013): Documentation of sediment core PS75/214-1. Alfred Wegener Institute - Polarstern core repository, PANGAEA, https://doi.org/10.1594/PANGAEA.754980 https://doi.pangaea.de/10.1594/PANGAEA.873755 https://doi.org/10.1594/PANGAEA.873755 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kuhn, Gerhard; Hillenbrand, Claus-Dieter; Kasten, Sabine; Smith, James A; Nitsche, Frank-Oliver; Frederichs, Thomas; Wiers, Steffen; Ehrmann, Werner; Klages, Johann Philipp; Mogollón, José M (2017): Evidence for a palaeo-subglacial lake on the Antarctic continental shelf. Nature Communications, 8, 15591, https://doi.org/10.1038/NCOMMS15591 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.873755 https://doi.org/10.1038/NCOMMS15591 https://doi.org/10.1594/PANGAEA.754973 https://doi.org/10.1594/PANGAEA.754980 2023-01-20T07:33:55Z Subglacial lakes are widespread beneath the Antarctic ice sheet but their control on ice sheet dynamics and their ability to harbour life remain poorly characterised. Here we present the evidence for a palaeo-subglacial lake on the Antarctic continental shelf. A distinct sediment facies recovered from a bedrock basin in Pine Island Bay indicates deposition within a low-energy lake environment. Diffusive-advection modelling demonstrates that low chloride concentrations in the sediment pore water can only be explained by initial deposition of this facies in a freshwater setting. These observations indicate that an active subglacial meltwater network, similar to that observed beneath the extant ice sheet, was also active during the last glacial period. It also provides a new framework for refining exploration of these unique environments. Dataset Antarc* Antarctic Ice Sheet Pine Island Bay PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) The Antarctic ENVELOPE(-106.643160,-102.355160,-74.356900,-74.799830) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Kuhn, Gerhard Hillenbrand, Claus-Dieter Kasten, Sabine Smith, James A Nitsche, Frank-Oliver Frederichs, Thomas Wiers, Steffen Ehrmann, Werner Klages, Johann Philipp Mogollón, José M Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
Subglacial lakes are widespread beneath the Antarctic ice sheet but their control on ice sheet dynamics and their ability to harbour life remain poorly characterised. Here we present the evidence for a palaeo-subglacial lake on the Antarctic continental shelf. A distinct sediment facies recovered from a bedrock basin in Pine Island Bay indicates deposition within a low-energy lake environment. Diffusive-advection modelling demonstrates that low chloride concentrations in the sediment pore water can only be explained by initial deposition of this facies in a freshwater setting. These observations indicate that an active subglacial meltwater network, similar to that observed beneath the extant ice sheet, was also active during the last glacial period. It also provides a new framework for refining exploration of these unique environments. |
format |
Dataset |
author |
Kuhn, Gerhard Hillenbrand, Claus-Dieter Kasten, Sabine Smith, James A Nitsche, Frank-Oliver Frederichs, Thomas Wiers, Steffen Ehrmann, Werner Klages, Johann Philipp Mogollón, José M |
author_facet |
Kuhn, Gerhard Hillenbrand, Claus-Dieter Kasten, Sabine Smith, James A Nitsche, Frank-Oliver Frederichs, Thomas Wiers, Steffen Ehrmann, Werner Klages, Johann Philipp Mogollón, José M |
author_sort |
Kuhn, Gerhard |
title |
Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf |
title_short |
Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf |
title_full |
Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf |
title_fullStr |
Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf |
title_full_unstemmed |
Sediment facies of a paleo-subglacial lake on the Antarctic continentral shelf |
title_sort |
sediment facies of a paleo-subglacial lake on the antarctic continentral shelf |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.873755 https://doi.org/10.1594/PANGAEA.873755 |
op_coverage |
MEDIAN LATITUDE: -74.519219 * MEDIAN LONGITUDE: -103.905749 * SOUTH-BOUND LATITUDE: -74.799830 * WEST-BOUND LONGITUDE: -106.643160 * NORTH-BOUND LATITUDE: -74.356900 * EAST-BOUND LONGITUDE: -102.355160 * DATE/TIME START: 2006-03-13T18:19:00 * DATE/TIME END: 2010-03-16T16:59:00 |
long_lat |
ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(-102.000,-102.000,-74.750,-74.750) ENVELOPE(-106.643160,-102.355160,-74.356900,-74.799830) |
geographic |
Antarctic Island Bay Pine Island Bay The Antarctic |
geographic_facet |
Antarctic Island Bay Pine Island Bay The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Pine Island Bay |
genre_facet |
Antarc* Antarctic Ice Sheet Pine Island Bay |
op_source |
Supplement to: Kuhn, Gerhard; Hillenbrand, Claus-Dieter; Kasten, Sabine; Smith, James A; Nitsche, Frank-Oliver; Frederichs, Thomas; Wiers, Steffen; Ehrmann, Werner; Klages, Johann Philipp; Mogollón, José M (2017): Evidence for a palaeo-subglacial lake on the Antarctic continental shelf. Nature Communications, 8, 15591, https://doi.org/10.1038/NCOMMS15591 |
op_relation |
Hillenbrand, Claus-Dieter; Kuhn, Gerhard; Smith, James A; Gohl, Karsten; Graham, Alastair G C; Larter, Robert D; Klages, Johann Philipp; Downey, Rachel; Moreton, Steven Grahame; Forwick, Matthias; Vaughan, David G (2013): Documentation of sediment core PS75/167-1. Alfred Wegener Institute - Polarstern core repository, PANGAEA, https://doi.org/10.1594/PANGAEA.754973 Hillenbrand, Claus-Dieter; Kuhn, Gerhard; Smith, James A; Gohl, Karsten; Graham, Alastair G C; Larter, Robert D; Klages, Johann Philipp; Downey, Rachel; Moreton, Steven Grahame; Forwick, Matthias; Vaughan, David G (2013): Documentation of sediment core PS75/214-1. Alfred Wegener Institute - Polarstern core repository, PANGAEA, https://doi.org/10.1594/PANGAEA.754980 https://doi.pangaea.de/10.1594/PANGAEA.873755 https://doi.org/10.1594/PANGAEA.873755 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.873755 https://doi.org/10.1038/NCOMMS15591 https://doi.org/10.1594/PANGAEA.754973 https://doi.org/10.1594/PANGAEA.754980 |
_version_ |
1766206537887383552 |