The geochemistry of upland ponds, Taylor Valley, Antarctica
The McMurdo Dry Valleys of Antarctica are the largest ice-free region on the continent. These valleys contain numerous water bodies that receive seasonal melt from glaciers. For forty years, research emphasis has been placed on the larger water bodies, the permanent ice-covered lakes. We present res...
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ftlouisianastuir:oai:repository.lsu.edu:geo_pubs-1623 2024-09-15T17:45:18+00:00 The geochemistry of upland ponds, Taylor Valley, Antarctica Lyons, W. Berry Welch, Kathleen A. Gardner, Christopher B. Jaros, Chris Moorhead, Daryl L. Knoepfle, Jennifer L. Doran, Peter T. 2012-02-01T08:00:00Z application/pdf https://repository.lsu.edu/geo_pubs/624 https://doi.org/10.1017/S0954102011000617 https://repository.lsu.edu/context/geo_pubs/article/1623/viewcontent/624.pdf unknown LSU Scholarly Repository https://repository.lsu.edu/geo_pubs/624 doi:10.1017/S0954102011000617 https://repository.lsu.edu/context/geo_pubs/article/1623/viewcontent/624.pdf Faculty Publications climate variation evapoconcentration McMurdo Dry Valleys meltwater solutes text 2012 ftlouisianastuir https://doi.org/10.1017/S0954102011000617 2024-08-08T04:27:15Z The McMurdo Dry Valleys of Antarctica are the largest ice-free region on the continent. These valleys contain numerous water bodies that receive seasonal melt from glaciers. For forty years, research emphasis has been placed on the larger water bodies, the permanent ice-covered lakes. We present results from the first study describing the geochemistry of ponds in the higher elevations of Taylor Valley. Unlike the lakes at lower elevations, the landscape on which these ponds lie is among the oldest in Taylor Valley. These upland ponds wax and wane in size depending on the local climatic conditions, and their ionic concentrations and isotopic composition vary annually depending on the amount of meltwater generated and their hydrologic connectivity. This study evaluates the impact of changes in summer climate on the chemistry of these ponds. Although pond chemistry reflects the initial meltwater chemistry, dissolution and chemical weathering within the stream channels, and possibly permafrost fluid input, the primary control is the dilution effect of glacier melt during warmer summers. These processes lead to differences in solute concentrations and ionic ratios between ponds, despite their nearby proximity. The change in size of these ponds over time has important consequences on their geochemical behaviour and potential to provide water and solutes to the subsurface. © 2011 Antarctic Science Ltd. Text Antarc* Antarctic Antarctica Ice McMurdo Dry Valleys permafrost LSU Digital Commons (Louisiana State University) Antarctic Science 24 1 3 14 |
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LSU Digital Commons (Louisiana State University) |
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ftlouisianastuir |
language |
unknown |
topic |
climate variation evapoconcentration McMurdo Dry Valleys meltwater solutes |
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climate variation evapoconcentration McMurdo Dry Valleys meltwater solutes Lyons, W. Berry Welch, Kathleen A. Gardner, Christopher B. Jaros, Chris Moorhead, Daryl L. Knoepfle, Jennifer L. Doran, Peter T. The geochemistry of upland ponds, Taylor Valley, Antarctica |
topic_facet |
climate variation evapoconcentration McMurdo Dry Valleys meltwater solutes |
description |
The McMurdo Dry Valleys of Antarctica are the largest ice-free region on the continent. These valleys contain numerous water bodies that receive seasonal melt from glaciers. For forty years, research emphasis has been placed on the larger water bodies, the permanent ice-covered lakes. We present results from the first study describing the geochemistry of ponds in the higher elevations of Taylor Valley. Unlike the lakes at lower elevations, the landscape on which these ponds lie is among the oldest in Taylor Valley. These upland ponds wax and wane in size depending on the local climatic conditions, and their ionic concentrations and isotopic composition vary annually depending on the amount of meltwater generated and their hydrologic connectivity. This study evaluates the impact of changes in summer climate on the chemistry of these ponds. Although pond chemistry reflects the initial meltwater chemistry, dissolution and chemical weathering within the stream channels, and possibly permafrost fluid input, the primary control is the dilution effect of glacier melt during warmer summers. These processes lead to differences in solute concentrations and ionic ratios between ponds, despite their nearby proximity. The change in size of these ponds over time has important consequences on their geochemical behaviour and potential to provide water and solutes to the subsurface. © 2011 Antarctic Science Ltd. |
format |
Text |
author |
Lyons, W. Berry Welch, Kathleen A. Gardner, Christopher B. Jaros, Chris Moorhead, Daryl L. Knoepfle, Jennifer L. Doran, Peter T. |
author_facet |
Lyons, W. Berry Welch, Kathleen A. Gardner, Christopher B. Jaros, Chris Moorhead, Daryl L. Knoepfle, Jennifer L. Doran, Peter T. |
author_sort |
Lyons, W. Berry |
title |
The geochemistry of upland ponds, Taylor Valley, Antarctica |
title_short |
The geochemistry of upland ponds, Taylor Valley, Antarctica |
title_full |
The geochemistry of upland ponds, Taylor Valley, Antarctica |
title_fullStr |
The geochemistry of upland ponds, Taylor Valley, Antarctica |
title_full_unstemmed |
The geochemistry of upland ponds, Taylor Valley, Antarctica |
title_sort |
geochemistry of upland ponds, taylor valley, antarctica |
publisher |
LSU Scholarly Repository |
publishDate |
2012 |
url |
https://repository.lsu.edu/geo_pubs/624 https://doi.org/10.1017/S0954102011000617 https://repository.lsu.edu/context/geo_pubs/article/1623/viewcontent/624.pdf |
genre |
Antarc* Antarctic Antarctica Ice McMurdo Dry Valleys permafrost |
genre_facet |
Antarc* Antarctic Antarctica Ice McMurdo Dry Valleys permafrost |
op_source |
Faculty Publications |
op_relation |
https://repository.lsu.edu/geo_pubs/624 doi:10.1017/S0954102011000617 https://repository.lsu.edu/context/geo_pubs/article/1623/viewcontent/624.pdf |
op_doi |
https://doi.org/10.1017/S0954102011000617 |
container_title |
Antarctic Science |
container_volume |
24 |
container_issue |
1 |
container_start_page |
3 |
op_container_end_page |
14 |
_version_ |
1810493057926168576 |