Deputy Center Director
Geosciences and Environmental Change Science Center
Email:
hgoldstein@usgs.gov
Office Phone:
303-236-5506
Fax:
303-236-5349
ORCID:
0000-0002-6092-8818
Supervisor:
Lara E Douglas
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These data are annual aeolian dust deposition calculations from vertical deposition at seven locations near the vicinity of Moab, Utah covering the period from 1999 to 2020. Data were collected by the U.S. Geological Survey Geosciences and Environmental Change Science Center (Denver, Colorado) and Southwest Biological Science Center (Moab, Utah) to "monitor sediment characteristics at sites selected to illuminate the relations between dust sources, present climate, and land use patterns" (Reheis 2003). The sites selected represent various land uses and land ownership including private land, multiple-use public lands, and restricted use National Parks. From 1999-2013 samples were sent to the Geosciences and Environmental...
Tags: Arches,
Canyonlands National Park,
Corral Pocket,
Dugout Ranch,
Ecology, All tags...
Geography,
Information Sciences,
Moab,
Needles,
Newspaper Rock,
Soil Sciences,
USGS Science Data Catalog (SDC),
Utah,
Virginia Park,
atmospheric deposition (chemical & particulate),
dust storms,
dust trap,
geoscientificInformation, Fewer tags
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The Las Vegas Formation (LVF) is a well-characterized sequence of groundwater discharge (GWD) deposits exposed in and around the Las Vegas Valley in southern Nevada. Nearly monolithologic bedrock surrounds the valley and provides an excellent opportunity to test the hypothesis that GWD deposits include an aeolian component. Mineralogical data indicate that the LVF sediments are dominated by carbonate minerals, similar to the local bedrock, but silicate minerals are also present. The median particle size is ~35 µm, consistent with modern dust in the region, and magnetic properties contrast strongly with local bedrock, implying an extralocal origin. By combining geochemical data from the LVF sediments and modern dust,...
Categories: Data;
Tags: Desert Wetlands,
Geochemistry,
Hydrology,
Las Vegas Formation,
Las Vegas, Nevada, All tags...
Mojave Desert,
Sedimentology,
Stratigraphy,
Tule Springs National Monument,
USGS Science Data Catalog (SDC),
aeolian dust,
groundwater discharge,
paleohydrology, Fewer tags
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Light-absorbing particles in atmospheric dust deposited on snow cover (dust-on-snow, DOS) diminish albedo and accelerate the timing and rate of snow melt. Identification of these particles and their effects are relevant to snow-radiation modeling and water-resource management. Laboratory-measured reflectance of DOS samples from the San Juan Mountains (USA) were compared with DOS mass loading, particle sizes, iron mineralogy, carbonaceous matter type and content, and chemical compositions. Samples were collected each spring for water years 2011-2016, when individual dust layers had merged into one (all layers merged) at the snow surface. Average reflectance values of the six samples were 0.2153 (sd, 0.0331) across...
Categories: Data;
Tags: Black Carbon,
Climatology,
Colorado River Basin,
Dust,
Dust-on-Snow, All tags...
Geochemistry,
Geomorphology,
Glaciology,
Hydrology,
Land Use Change,
Light absorbing particles,
San Juan Mountains, Colorado,
Silverton Colorado,
Swamp Angle Study Plot,
Telluride, Colorado,
USGS Science Data Catalog (SDC),
ferric oxide minerals,
snow-radiation modeling,
water resource management, Fewer tags
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