The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis
We have determined the flux of calcium, chloride and nitrate to the McMurdo Dry Valleys region by analysing snow pits for their chemical composition and their snow accumulation using multiple records spanning up to 48 years. The fluxes demonstrate patterns related to elevation and proximity to the o...
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ftportlandstate:oai:pdxscholar.library.pdx.edu:geog_fac-1007 2023-05-15T13:58:46+02:00 The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis Witherow, Rebecca A. Lyons, W. Berry Bertler, Nancy A. Welch, Kathleen A. Mayewski, Paul A. Sneed, Sharon B. Nylen, Thomas H. Handley, Michael J. Fountain, Andrew G. 2006-01-01T08:00:00Z application/pdf https://pdxscholar.library.pdx.edu/geog_fac/8 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1007&context=geog_fac unknown PDXScholar https://pdxscholar.library.pdx.edu/geog_fac/8 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1007&context=geog_fac Geography Faculty Publications and Presentations McMurdo Dry Valleys (Antarctica) Glaciers -- Antarctica Snow -- Antarctica -- Analysis Eolian processes Environmental Sciences text 2006 ftportlandstate 2022-01-09T19:25:32Z We have determined the flux of calcium, chloride and nitrate to the McMurdo Dry Valleys region by analysing snow pits for their chemical composition and their snow accumulation using multiple records spanning up to 48 years. The fluxes demonstrate patterns related to elevation and proximity to the ocean. In general, there is a strong relationship between the nitrate flux and snow accumulation, indicating that precipitation rates may have a great influence over the nitrogen concentrations in the soils of the valleys. Aeolian dust transport plays an important role in the deposition of some elements (e.g. Caý?) into the McMurdo Dry Valleys. soils. Because of the antiquity of some of the soil surfaces in the McMurdo Dry Valleys regions, the accumulated atmospheric flux of salts to the soils has important ecological consequences. Although precipitation may be an important mechanism of salt deposition to the McMurdo Dry Valley surfaces, it is poorly understood because of difficulties in measurement and high losses from sublimation. Text Antarc* Antarctica McMurdo Dry Valleys Portland State University: PDXScholar McMurdo Dry Valleys |
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Open Polar |
collection |
Portland State University: PDXScholar |
op_collection_id |
ftportlandstate |
language |
unknown |
topic |
McMurdo Dry Valleys (Antarctica) Glaciers -- Antarctica Snow -- Antarctica -- Analysis Eolian processes Environmental Sciences |
spellingShingle |
McMurdo Dry Valleys (Antarctica) Glaciers -- Antarctica Snow -- Antarctica -- Analysis Eolian processes Environmental Sciences Witherow, Rebecca A. Lyons, W. Berry Bertler, Nancy A. Welch, Kathleen A. Mayewski, Paul A. Sneed, Sharon B. Nylen, Thomas H. Handley, Michael J. Fountain, Andrew G. The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis |
topic_facet |
McMurdo Dry Valleys (Antarctica) Glaciers -- Antarctica Snow -- Antarctica -- Analysis Eolian processes Environmental Sciences |
description |
We have determined the flux of calcium, chloride and nitrate to the McMurdo Dry Valleys region by analysing snow pits for their chemical composition and their snow accumulation using multiple records spanning up to 48 years. The fluxes demonstrate patterns related to elevation and proximity to the ocean. In general, there is a strong relationship between the nitrate flux and snow accumulation, indicating that precipitation rates may have a great influence over the nitrogen concentrations in the soils of the valleys. Aeolian dust transport plays an important role in the deposition of some elements (e.g. Caý?) into the McMurdo Dry Valleys. soils. Because of the antiquity of some of the soil surfaces in the McMurdo Dry Valleys regions, the accumulated atmospheric flux of salts to the soils has important ecological consequences. Although precipitation may be an important mechanism of salt deposition to the McMurdo Dry Valley surfaces, it is poorly understood because of difficulties in measurement and high losses from sublimation. |
format |
Text |
author |
Witherow, Rebecca A. Lyons, W. Berry Bertler, Nancy A. Welch, Kathleen A. Mayewski, Paul A. Sneed, Sharon B. Nylen, Thomas H. Handley, Michael J. Fountain, Andrew G. |
author_facet |
Witherow, Rebecca A. Lyons, W. Berry Bertler, Nancy A. Welch, Kathleen A. Mayewski, Paul A. Sneed, Sharon B. Nylen, Thomas H. Handley, Michael J. Fountain, Andrew G. |
author_sort |
Witherow, Rebecca A. |
title |
The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis |
title_short |
The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis |
title_full |
The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis |
title_fullStr |
The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis |
title_full_unstemmed |
The Aeolian Flux of Calcium, Chloride and Nitrate to the McMurdo Dry Valleys Landscape: Evidence from Snow Pit Analysis |
title_sort |
aeolian flux of calcium, chloride and nitrate to the mcmurdo dry valleys landscape: evidence from snow pit analysis |
publisher |
PDXScholar |
publishDate |
2006 |
url |
https://pdxscholar.library.pdx.edu/geog_fac/8 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1007&context=geog_fac |
geographic |
McMurdo Dry Valleys |
geographic_facet |
McMurdo Dry Valleys |
genre |
Antarc* Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctica McMurdo Dry Valleys |
op_source |
Geography Faculty Publications and Presentations |
op_relation |
https://pdxscholar.library.pdx.edu/geog_fac/8 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1007&context=geog_fac |
_version_ |
1766267104021970944 |