Noble gas signatures in Greenland : tracing glacial meltwater sources
Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 42 (2015): 9311–9318, doi:10.1002/2015GL065778. This study repres...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/7798 2023-05-15T16:26:52+02:00 Noble gas signatures in Greenland : tracing glacial meltwater sources Niu, Yi Castro, M. Clara Aciego, Sarah M. Hall, Chris M. Stevenson, Emily I. Arendt, Carli A. Das, Sarah B. 2015-11-06 https://hdl.handle.net/1912/7798 en_US eng John Wiley & Sons https://doi.org/10.1002/2015GL065778 Geophysical Research Letters 42 (2015): 9311–9318 https://hdl.handle.net/1912/7798 doi:10.1002/2015GL065778 Geophysical Research Letters 42 (2015): 9311–9318 doi:10.1002/2015GL065778 Noble gases Greenland Glacial meltwater Water residence times Article 2015 ftwhoas https://doi.org/10.1002/2015GL065778 2022-05-28T22:59:30Z Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 42 (2015): 9311–9318, doi:10.1002/2015GL065778. This study represents the first comprehensive noble gas study in glacial meltwater from the Greenland Ice Sheet. It shows that most samples are in disequilibrium with surface collection conditions. A preliminary Ne and Xe analysis suggests that about half of the samples equilibrated at a temperature of ~0°C and altitudes between 1000 m and 2000 m, with a few samples pointing to lower equilibration altitudes and temperatures between 2°C and 5°C. Two samples suggest an origin as melted ice and complete lack of equilibration with surface conditions. A helium component analysis suggests that this glacial meltwater was isolated from the atmosphere prior to the 1950s, with most samples yielding residence times ≤ 420 years. Most samples represent a mixture between a dominant atmospheric component originating as precipitation and basal meltwater or groundwater, which has accumulated crustal 4He over time. University of Michigan; Packard Foundation; Department of Earth and Environmental Sciences Turner fellowship 2016-05-06 Article in Journal/Newspaper Greenland Ice Sheet Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Greenland Geophysical Research Letters 42 21 9311 9318 |
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Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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language |
English |
topic |
Noble gases Greenland Glacial meltwater Water residence times |
spellingShingle |
Noble gases Greenland Glacial meltwater Water residence times Niu, Yi Castro, M. Clara Aciego, Sarah M. Hall, Chris M. Stevenson, Emily I. Arendt, Carli A. Das, Sarah B. Noble gas signatures in Greenland : tracing glacial meltwater sources |
topic_facet |
Noble gases Greenland Glacial meltwater Water residence times |
description |
Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 42 (2015): 9311–9318, doi:10.1002/2015GL065778. This study represents the first comprehensive noble gas study in glacial meltwater from the Greenland Ice Sheet. It shows that most samples are in disequilibrium with surface collection conditions. A preliminary Ne and Xe analysis suggests that about half of the samples equilibrated at a temperature of ~0°C and altitudes between 1000 m and 2000 m, with a few samples pointing to lower equilibration altitudes and temperatures between 2°C and 5°C. Two samples suggest an origin as melted ice and complete lack of equilibration with surface conditions. A helium component analysis suggests that this glacial meltwater was isolated from the atmosphere prior to the 1950s, with most samples yielding residence times ≤ 420 years. Most samples represent a mixture between a dominant atmospheric component originating as precipitation and basal meltwater or groundwater, which has accumulated crustal 4He over time. University of Michigan; Packard Foundation; Department of Earth and Environmental Sciences Turner fellowship 2016-05-06 |
format |
Article in Journal/Newspaper |
author |
Niu, Yi Castro, M. Clara Aciego, Sarah M. Hall, Chris M. Stevenson, Emily I. Arendt, Carli A. Das, Sarah B. |
author_facet |
Niu, Yi Castro, M. Clara Aciego, Sarah M. Hall, Chris M. Stevenson, Emily I. Arendt, Carli A. Das, Sarah B. |
author_sort |
Niu, Yi |
title |
Noble gas signatures in Greenland : tracing glacial meltwater sources |
title_short |
Noble gas signatures in Greenland : tracing glacial meltwater sources |
title_full |
Noble gas signatures in Greenland : tracing glacial meltwater sources |
title_fullStr |
Noble gas signatures in Greenland : tracing glacial meltwater sources |
title_full_unstemmed |
Noble gas signatures in Greenland : tracing glacial meltwater sources |
title_sort |
noble gas signatures in greenland : tracing glacial meltwater sources |
publisher |
John Wiley & Sons |
publishDate |
2015 |
url |
https://hdl.handle.net/1912/7798 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Geophysical Research Letters 42 (2015): 9311–9318 doi:10.1002/2015GL065778 |
op_relation |
https://doi.org/10.1002/2015GL065778 Geophysical Research Letters 42 (2015): 9311–9318 https://hdl.handle.net/1912/7798 doi:10.1002/2015GL065778 |
op_doi |
https://doi.org/10.1002/2015GL065778 |
container_title |
Geophysical Research Letters |
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42 |
container_issue |
21 |
container_start_page |
9311 |
op_container_end_page |
9318 |
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1766015862384361472 |