A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA
Abstract Ice-core samples from Upper Fremont Glacier (UFG), Wyoming, were used as proxy records for the chemical composition of atmospheric deposition. Results of analysis of the ice-core samples for stable isotopes of nitrogen (δ 15 N, ) and sulfur (δ 34 S, ), as well as and deposition rates from t...
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ftbiomed:oai:biomedcentral.com:1467-4866-12-4 2023-05-15T16:38:30+02:00 A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA Naftz, David L Schuster, Paul F Johnson, Craig A 2011-03-07 http://www.geochemicaltransactions.com/content/12/1/4 en eng BioMed Central Ltd. http://www.geochemicaltransactions.com/content/12/1/4 Copyright 2011 Naftz et al; licensee Chemistry Central Ltd. Research article 2011 ftbiomed 2011-03-27T03:44:38Z Abstract Ice-core samples from Upper Fremont Glacier (UFG), Wyoming, were used as proxy records for the chemical composition of atmospheric deposition. Results of analysis of the ice-core samples for stable isotopes of nitrogen (δ 15 N, ) and sulfur (δ 34 S, ), as well as and deposition rates from the late-1940s thru the early-1990s, were used to enhance and extend existing National Atmospheric Deposition Program/National Trends Network (NADP/NTN) data in western Wyoming. The most enriched δ 34 S value in the UFG ice-core samples coincided with snow deposited during the 1980 eruption of Mt. St. Helens, Washington. The remaining δ 34 S values were similar to the isotopic composition of coal from southern Wyoming. The δ 15 N values in ice-core samples representing a similar period of snow deposition were negative, ranging from -5.9 to -3.2 ‰ and all fall within the δ 15 N values expected from vehicle emissions. Ice-core nitrate and sulfate deposition data reflect the sharply increasing U.S. emissions data from 1950 to the mid-1970s. Article in Journal/Newspaper ice core BioMed Central |
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Open Polar |
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BioMed Central |
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ftbiomed |
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English |
description |
Abstract Ice-core samples from Upper Fremont Glacier (UFG), Wyoming, were used as proxy records for the chemical composition of atmospheric deposition. Results of analysis of the ice-core samples for stable isotopes of nitrogen (δ 15 N, ) and sulfur (δ 34 S, ), as well as and deposition rates from the late-1940s thru the early-1990s, were used to enhance and extend existing National Atmospheric Deposition Program/National Trends Network (NADP/NTN) data in western Wyoming. The most enriched δ 34 S value in the UFG ice-core samples coincided with snow deposited during the 1980 eruption of Mt. St. Helens, Washington. The remaining δ 34 S values were similar to the isotopic composition of coal from southern Wyoming. The δ 15 N values in ice-core samples representing a similar period of snow deposition were negative, ranging from -5.9 to -3.2 ‰ and all fall within the δ 15 N values expected from vehicle emissions. Ice-core nitrate and sulfate deposition data reflect the sharply increasing U.S. emissions data from 1950 to the mid-1970s. |
format |
Article in Journal/Newspaper |
author |
Naftz, David L Schuster, Paul F Johnson, Craig A |
spellingShingle |
Naftz, David L Schuster, Paul F Johnson, Craig A A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA |
author_facet |
Naftz, David L Schuster, Paul F Johnson, Craig A |
author_sort |
Naftz, David L |
title |
A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA |
title_short |
A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA |
title_full |
A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA |
title_fullStr |
A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA |
title_full_unstemmed |
A 50-year record of NOxand SO2sources in precipitation in the Northern Rocky Mountains, USA |
title_sort |
50-year record of noxand so2sources in precipitation in the northern rocky mountains, usa |
publisher |
BioMed Central Ltd. |
publishDate |
2011 |
url |
http://www.geochemicaltransactions.com/content/12/1/4 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
http://www.geochemicaltransactions.com/content/12/1/4 |
op_rights |
Copyright 2011 Naftz et al; licensee Chemistry Central Ltd. |
_version_ |
1766028784163618816 |