Ion deposition in Wasatch Mountain snow: influence of Great Salt Lake and Salt Lake City

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Title Ion deposition in Wasatch Mountain snow: influence of Great Salt Lake and Salt Lake City
Publication Type thesis
School or College College of Science
Department Biological Sciences
Author Arens, Seth J. T.
Date 2010-08
Description The Wasatch Mountains are a unique place to study deposition of ions in snow because of proximity to Salt Lake City, UT, home to 1.1 million people, and Great Salt Lake, the world' fourth largest closed-basin saline lake. Prior study at low elevations of the Wasatch Mountains and in Salt Lake City indicates very high deposition (>1 mmol L-1) of chloride nitrate, sulfate, sodium and calcium ions in snow and rime during winter temperature inversions. At peak snowpack, concentrations (?eq L-1) and ecosystem loading (meq m-2) of major ion species (Cl-, NO3-, SO42-, H+, NH4+, Na+, Mg2+, K+, and Ca2+) were measured at five sites in 2008 and 16 sites in 2009 in the Wasatch Mountains. Concentrations and loading of these ion species in snow were up to an order of magnitude higher than previously observed and were likely derived from salts that precipitated from Great Salt Lake as its elevation decreased. Great Salt Lake has very high salinity dominated by concentrations of chloride, sulfate, sodium and magnesium. Moderately strong correlations existed between concentrations of these ions in snow and distance from Great Salt Lake, suggesting it as a major source of ion deposition in the Wasatch Mountains. Concentrations and ecosystem loading of nitrate in snow were lower than expected, but total winter inorganic nitrogen deposition (NO3- and NH4+) was similar to observations at Niwot Ridge in the Rocky Mountains of Colorado. In general, concentrations of ions in snow decreased with elevation while ecosystem loading of ions increased with elevation due to greater snow accumulation.
Type Text
Publisher University of Utah
Subject Ions; Nitrate; Salt; Snow; Sulfate; Utah; Wasatch Mountain; Ion deposition
Dissertation Institution University of Utah
Dissertation Name Master of Science
Language eng
Rights Management Copyright © Seth J. T. Arens 2010
Format application/pdf
Format Medium application/pdf
Format Extent 10,266,034 bytes
Source Original in Marriott Library Special Collections, TD7.5 2010 .A74
ARK ark:/87278/s67m0pnp
Setname ir_etd
ID 194424
Reference URL https://collections.lib.utah.edu/ark:/87278/s67m0pnp
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