Filters: Tags: Dust (X)159 results (122ms)
Categories: Publication; Types: Citation; Tags: P 0000 AIR POLLUTION, Pollution Abstracts, USA, Massachusetts, Boston, air pollution, construction industry,
Categories: Publication; Types: Citation; Tags: Air pollution, Automotive exhaust emissions, Climate, Dust, Ecosystem disturbance,
Categories: Publication; Types: Citation; Tags: ASW, Caribbean Sea, Africa, Air pollution, Air-water interactions, Aspergillus,
Categories: Publication; Types: Citation; Tags: P 0000 AIR POLLUTION, Pollution Abstracts, USA, Arizona, Meadview, aerosols, air sampling,
Temporal and spatial sources of silica for chert remain poorly constrained. Modern sources to the worlds oceans include silica in rivers > aeolian (dust) deposition > sea floor vents and submarine weathering. However, changes in aridity and dust flux during the Phanerozoic may explain variations in the ocean silica cycle and times and places of chert formation. The chemistry of fine quartz dust (FQD) provides a chemical mechanism for the transformation of FQD to polymorphs of silica in chert; FQD is readily dissolved, then reprecipitated as Opal-A by either biotic or abiotic processes. An unequivocal relation between increases in dust flux and biogenic opal-A in the western Pacific Ocean during the past 200 kyr...
Tags: Africa, Energy Resources, Geochemistry, International, Soil Sciences,
Categories: Publication; Types: Citation; Tags: Agricultural practices, Agriculture, Dust, Farms, Inorganic compounds,
Sampling techniques for the assessment of anthropogenic vapour and particulate mercury in the Brazilian Amazon atmosphere
Categories: Publication; Types: Citation; Tags: Air pollution, Air sampling, Atmospheric chemistry, Atmospheric conditions, Brazil, Alta Floresta,
Ecosystem disturbances that remove vegetation and disturb surface soils are major causes of excessive soil erosion and can result in accelerated transport of soils contaminated with hazardous materials. Accelerated wind erosion in disturbed lands that are contaminated is of particular concern because of potential increased inhalation exposure, yet measurements regarding these relationships are lacking. The importance of this was highlighted when, in May of 2000, the Cerro Grande fire burned over roughly 30% of Los Alamos National Laboratory (LANL), mostly in ponderosa pine (Pinus ponderosa) forest, and through areas with soils containing contaminants, particularly excess depleted and natural uranium. Additionally,...
Categories: Publication; Types: Citation, Journal Citation; Tags: Dust, Environmental contaminants, Environmental disturbance, The Science of the Total Environment, Uranium,
Mapped sealed and unsealed pavement and concentrations of metals, polycyclic aromatic hydrocarbons, and radionuclides for soils, pavement dust, and stream sediment for 10 urban watersheds
These data represent a one-time synoptic survey of sampled soils, pavement dust, and stream sediment in 10 urban watersheds in three regions of the United States (Pacific Northwest, northeast, and southeast) to evaluate sources of sediment and two groups of common urban contaminants: polycyclic aromatic hydrocarbons (PAHs) and metals. Analyses of samples from six of the watersheds included fallout radionuclides to facilitate identification of sediment sources to the streams. Scripts used in R to test selected explanatory variables for the urban contaminants using Generalize Additive Models (GAMs) are included. The data release also includes Geographic Information System (GIS) spatial layers that were developed for...
Soil chemistry adjacent to roads treated with dust control products at Loess Bluffs National Wildlife Refuge
The health of soils along roadways is critical for maximizing habitat quality and minimizing negative ecological effects of roads. Adjacent to unpaved roads, soil chemistry may be altered by the deposition of dust, as well as by road treatment with dust suppressants or soil stabilizer products. If present in roadside soils, these product residues may be available to plants, terrestrial invertebrates, or small mammals. Unfortunately, very few studies have attempted to track the transport of dust suppressants after application. As part of a larger ongoing study on the environmental effects of dust suppressant products on roadside plants and animals, we sampled roadside soils at Loess Bluff National Wildlife Refuge...
Categories: Data; Tags: Road ecology, USGS Science Data Catalog (SDC), Unpaved road, dust, dust suppressant
Deposition of suspended dust near eroding source fields can have detrimental effects on vegetation, as well as on soil and water quality. This study was undertaken to quantify dust deposition within 200 m of a source field during wind erosion events. Erosion was measured with BSNE samplers on a small field of Amarillo fine sandy loam at field at Big Spring, TX. Suspension-sized dust discharge averaged 33 � 5 per cent of the total sediment discharge and ranged from 18�0 to 147�4 kg m?1 during eight selected storm events. Within 200 m of the source field boundary, dust collected in deposition samplers placed above a vegetated surface averaged 34 per cent of initial dust discharge. Predicted deposition, according to...
Categories: Publication; Types: Citation, Journal Citation; Tags: Earth Surface Processes and Landforms, deposition, dust, wind erosion
Categories: Publication; Types: Citation; Tags: Air quality, Asthma, Cleaning process, Dust, H 1000 Occupational Safety and Health,
Biomonitoring of Chemical Exposure among New York City Firefighters Responding to the World Trade Center Fire and Collapse
Categories: Publication; Types: Citation; Tags: Bioindicators, Blood, Chemicals, Disasters, Dust,
Assessing the impact of advected African dust on air quality and health in the eastern United States
Categories: Publication; Types: Citation; Tags: Africa, Africa, Air pollution, Dust, Meteorology,
Categories: Publication; Types: Citation; Tags: Acari, Apidae, Apis mellifera, Bumble bees, Colonies,
Relationship between the dust lead concentration and the particle sizes of household dusts collected in Jersey City residences
Categories: Publication; Types: Citation; Tags: Dust, EE 443.1 Atmospheric Properties; EE 451.1 Air Pollution Sour, Environmental Engineering Abstracts, Global warming, Kosa aerosols,
The recent upsurge in research attention to aeolian dust has shown that dust transport systems operate on very large spatial and temporal scales, and involve much larger quantities of sediment than was previously realized. An inevitable consequence of this is that researchers from a range of neighbouring disciplines, including ecology, are beginning to realize that this new knowledge has important implications for their study areas. In the present paper, we examine the ecological implications (real and potential) of this expanding knowledge of dust transport systems, with a particular emphasis upon the Australian dust transport system. We track these ecological effects from source to sink. At source, wind erosionâ€“soilâ€“vegetation...
Categories: Publication; Types: Citation, Journal Citation; Tags: Geomorphology, aeolian processes, biological crusts, dust, dust deposition,
Categories: Publication; Types: Citation; Tags: Aerosol properties, Boundary layers, Desert, Dust, Dust emission,
The aeolian accumulation of natural atmospheric dust in a desert environment was investigated during a 24-month experiment. Accumulation was measured with marble collectors every month. At the same time, wind speed, dust concentration, dew formation and rainfall were recorded. Atmospheric stability was measured from a 90 m tower several km from the test site. Dust accumulation by day was systematically higher than dust accumulation at night. Also, dust concentration was higher, but the higher concentrations cannot completely explain die higher accumulation values. Both average monthly concentration and accumulation are considerably influenced by the occurrence of high-magnitude dust events, either dust storms or...
Categories: Publication; Types: Citation, Journal Citation; Tags: Journal of Arid Environments, desert, dust, dust accumulation, wind