Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica
A system of subglacial lakes drained on Thwaites Glacier from 2012–2014. To improve coverage for subsequent drainage events, we extended the elevation and ice-velocity time series on Thwaites Glacier through austral winter 2019. These new observations document a second drainage cycle in 2017/18 and...
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2020
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00055034 2023-05-15T13:37:34+02:00 Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica Hoffman, Andrew O. Christianson, Knut Shapero, Daniel Smith, Benjamin E. Joughin, Ian 2020-12 electronic https://doi.org/10.5194/tc-14-4603-2020 https://noa.gwlb.de/receive/cop_mods_00055034 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054685/tc-14-4603-2020.pdf https://tc.copernicus.org/articles/14/4603/2020/tc-14-4603-2020.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4603-2020 https://noa.gwlb.de/receive/cop_mods_00055034 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054685/tc-14-4603-2020.pdf https://tc.copernicus.org/articles/14/4603/2020/tc-14-4603-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/tc-14-4603-2020 2022-02-08T22:34:43Z A system of subglacial lakes drained on Thwaites Glacier from 2012–2014. To improve coverage for subsequent drainage events, we extended the elevation and ice-velocity time series on Thwaites Glacier through austral winter 2019. These new observations document a second drainage cycle in 2017/18 and identified two new lake systems located in the western tributaries of Thwaites and Haynes glaciers. In situ and satellite velocity observations show temporary < 3 % speed fluctuations associated with lake drainages. In agreement with previous studies, these observations suggest that active subglacial hydrology has little influence on thinning and retreat of Thwaites Glacier on decadal to centennial timescales. Article in Journal/Newspaper Antarc* Antarctica The Cryosphere Thwaites Glacier West Antarctica Niedersächsisches Online-Archiv NOA Austral New Lake ENVELOPE(-109.468,-109.468,62.684,62.684) Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctica The Cryosphere 14 12 4603 4609 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Hoffman, Andrew O. Christianson, Knut Shapero, Daniel Smith, Benjamin E. Joughin, Ian Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
A system of subglacial lakes drained on Thwaites Glacier from 2012–2014. To improve coverage for subsequent drainage events, we extended the elevation and ice-velocity time series on Thwaites Glacier through austral winter 2019. These new observations document a second drainage cycle in 2017/18 and identified two new lake systems located in the western tributaries of Thwaites and Haynes glaciers. In situ and satellite velocity observations show temporary < 3 % speed fluctuations associated with lake drainages. In agreement with previous studies, these observations suggest that active subglacial hydrology has little influence on thinning and retreat of Thwaites Glacier on decadal to centennial timescales. |
format |
Article in Journal/Newspaper |
author |
Hoffman, Andrew O. Christianson, Knut Shapero, Daniel Smith, Benjamin E. Joughin, Ian |
author_facet |
Hoffman, Andrew O. Christianson, Knut Shapero, Daniel Smith, Benjamin E. Joughin, Ian |
author_sort |
Hoffman, Andrew O. |
title |
Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica |
title_short |
Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica |
title_full |
Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica |
title_fullStr |
Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica |
title_full_unstemmed |
Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica |
title_sort |
brief communication: heterogenous thinning and subglacial lake activity on thwaites glacier, west antarctica |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-4603-2020 https://noa.gwlb.de/receive/cop_mods_00055034 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054685/tc-14-4603-2020.pdf https://tc.copernicus.org/articles/14/4603/2020/tc-14-4603-2020.pdf |
long_lat |
ENVELOPE(-109.468,-109.468,62.684,62.684) ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Austral New Lake Thwaites Glacier West Antarctica |
geographic_facet |
Austral New Lake Thwaites Glacier West Antarctica |
genre |
Antarc* Antarctica The Cryosphere Thwaites Glacier West Antarctica |
genre_facet |
Antarc* Antarctica The Cryosphere Thwaites Glacier West Antarctica |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4603-2020 https://noa.gwlb.de/receive/cop_mods_00055034 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054685/tc-14-4603-2020.pdf https://tc.copernicus.org/articles/14/4603/2020/tc-14-4603-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-14-4603-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
12 |
container_start_page |
4603 |
op_container_end_page |
4609 |
_version_ |
1766094200844058624 |