Effects of chemical remediation treatments on the extractability and speciation of cadmium and lead in contaminated soils

Categories: Publication; Types: Citation; Tags: Agriculture, Cadmium, Chemical treatment, Crops, Lead, All tags... P 5000 LAND POLLUTION, Phytoremediation, Pollution Abstracts, Soil remediation, Triticum aestivum, calcium carbonate, manganese oxide, zeolites, Fewer tags

2D micromodel studies of pore-throat clogging by pure fine-grained sediments and natural sediments from NGHP-02, offshore India

Fine-grained sediments, or “fines,” are nearly ubiquitous in natural sediments, even in the predominantly coarse-grained sediments that host gas hydrates. Fines within these sandy sediments can be mobilized and subsequently clog flow pathways while methane is being extracted from gas hydrate as an energy resource. Using two-dimensional (2D) micromodels to test the conditions in which clogging occurs provides insights for choosing production operation parameters that optimize methane recovery in the field. During methane extraction, several processes can alter the mobility and clogging potential of fines: (1) fluid flow as the formation is depressurized to release methane from gas hydrate, (2) shifting pore-fluid...

Categories: Data; Tags: 2D micromodel, Bay of Bengal, Department of Civil and Environmental Engineering, Geophysics, Indian Ocean, All tags... Krishna-Godavari Basin, Laboratory, Louisiana State University, Louisiana State University, Department of Civil and Environmental Engineering, Marine Geology, NGHP-02, NGHP-02-09, NGHP-02-16, Woods Hole Coastal and Marine Science Center, U.S. Geological Survey, bentonite, brine, calcium carbonate, clogging, deionized water, diatoms, earth material properties, fine-grained sediment, gas hydrate resources, geoscientificInformation, illite, image analysis, kaolin, laboratory experiments, mica, natural resource extraction, optical microscopy, permeability, silica silt, soil sciences, Fewer tags

Predictive soil property map: Very fine sand content

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Predictive soil property map: Sodium adsorption ratio

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Changes in primary productivity associated with liming and reacidification of an Adirondack lake.

Categories: Publication; Types: Citation; Tags: D 04715 Reclamation; P 2000 FRESHWATER POLLUTION; Q5 01521 M, Ecology Abstracts; Pollution Abstracts; ASFA 3: Aquatic Poll, USA, New York, Adirondack Mts., acidification, biomass, All tags... calcium carbonate, chlorophyll, chlorophylls, effects on, environmental changes, freshwater lakes, lakes, lime, liming, pH effects, phytoplankton, primary production, Fewer tags

Bahamas

Categories: Publication; Types: Citation; Tags: ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic A, ASW, Caribbean Sea, Bahamas, Bahama Is., Bahama Is., Bahamas, All tags... Calcium carbonate, Coastal Waters, Coastal zone management, Ecosystem management, Environment management, Environmental legislation, Environmental protection, Fisheries, Fishery management, Fishing and fisheries, Human factors, Legislation, Limestone, Man-induced effects, Marine Environment, Marine environment (see also Sea water), Nature conservation, Oceans, Pollution effects, Productivity, Q5 01523 Conservation, wildlife management and recreation; O, Recreational waters, Resources, Resources Management, Sea water (see also Marine ----- ), Seasonal variations, Shallow Water, Tourism, Water Quality, Water quality (Natural waters), Fewer tags

Maerl growth, carbonate production rates and accumulation rates in the northeast Atlantic

Categories: Publication; Types: Citation; Tags: ANE, Atlantic, ANE, Europe, Accretion, Algae, Atlantic Ocean, All tags... Atlantic Ocean, Bioaccumulation, Calcification, Calcium Carbonate, Calcium carbonates, Coastal Waters, Corallinaceae, Corallinales, D 04330 Marine; Q1 01224 Reproduction and development; O 101, Ecology Abstracts; ASFA 1: Biological Sciences & Living Reso, Growth, Growth rate, Harvesting, Oceans, Seaweeds, Sedimentation, Sediments, maerl, Fewer tags

Predictive soil property map: Organic matter

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Limestone drains to increase pH and remove dissolved metals from acidic mine drainage

Categories: Publication; Types: Citation; Tags: Acid Mine Drainage, Acidic wastes, Calcium Carbonate, Chemical Precipitation, Drains, All tags... Hydrogen Ion Concentration, Limestone, Metals, Mine drainage, Neutralization, OLD, Ponds, Precipitation, SW 3070 Water quality control; P 2000 FRESHWATER POLLUTION, Sludge, USA, Pennsylvania, Water Resources Abstracts; Pollution Abstracts, hydrolysis, Fewer tags

Lithic controls on the removal of iron and remediation of acidic mine drainage

Categories: Publication; Types: Citation; Tags: Acid Mine Drainage, Acidic wastes, Calcium carbonate, Chemical Precipitation, Field Tests, All tags... Field studies, Iron, Limestone, Lithology, Mine drainage, Mining waste waters, Morphology, Precipitation, Precipitation (Chemical), Remediation, SW 3070 Water quality control; AQ 00007 Industrial Effluents, Sand, Sandstones, Streams, Water Quality, Water Resources Abstracts; Aqualine Abstracts; Pollution Abs, Water quality (Natural waters), Water treatment, lithology, sandstone, Fewer tags

CO sub(2) partial pressure controls the calcification rate of a coral community

Categories: Publication; Types: Citation; Tags: Atmospheric chemistry, Atmospheric gases, Biogeochemical cycle, Calcification, Carbon dioxide, All tags... Climatic changes, Coral, Coral reefs, Corallinales, D 04330 Marine; Q1 01482 Ecosystems and energetics; Q1 01246, Ecological crisis, Ecology Abstracts; ASFA 1: Biological Sciences & Living Reso, Ecosystem disturbance, Man-induced effects, Marine environment, Pollution effects, Scleractinia, Stony corals, World Oceans, calcium carbonate, carbon cycle, Fewer tags

Estimation of past seepage volumes from calcite distribution in the Topopah Spring Tuff, Yucca Mountain, Nevada

Categories: Publication; Types: Citation; Tags: Calcite, Calcium carbonate, Coatings, Distribution, Distribution (Mathematical), All tags... Estimating, Geologic Formations, Geology, Groundwater Movement, Groundwater flow, Hydrology, Radioactive Waste Disposal, Radioactive wastes, SW 0840 Groundwater; AQ 00002 Water Quality; P 8000 RADIATIO, Seepage, USA, Nevada, Yucca Mt., USA, Nevada, Yucca Mt., Underground Waste Disposal, Waste disposal sites, Water Resources Abstracts; Aqualine Abstracts; Pollution Abs, Fewer tags

Geochemistry of dissolved and suspended loads of the Seine river, France anthropogenic impact, carbonate and silicate weathering

Categories: Publication; Types: Citation; Tags: 000-24, AQ 00002 Water Quality; M1 400 Monitoring and Quantitating A, Agriculture, Analysis, Aqualine Abstracts; Human Population, All tags... Atmosphere, Basins, Basins (Geographical) (see also Catchment areas), Biogeochemistry, Budgets, Calcium carbonate, Carbon dioxide, Carbonate, Chemical analysis, Chemicals, Consumers, Dissolved-solids, Erosion, France, France, Seine R., Geophysics, Human activity, Human impact, Isotopes, Loading, Mass, Nitrate, Paris, Population-environment relations, Reservoirs, Rivers, Samples, Sampling, Seine River, Signatures, Silicates, Streams (in natural channels), Surface water, Surface water (s a lakes,ponds,reservoirs,streams), Suspended, Time dependent, Weathering, Fewer tags

Dependence of sediment compressibility and recompressibility on pore fluid chemistry for pure, endmember fines

The safety, effectiveness and longevity of many construction and geotechnical engineering projects rely on correctly accounting for the evolution of soil properties over time. Critical sediment properties, such as compressibility, can change in response to pore-fluid chemistry changes, particularly if the sediment contains appreciable concentrations of fine-grained materials. Pore-fluid changes act at the micro scale, altering interactions between sediment particles, or between sediment particles and the pore fluid. These micro-scale alterations change how sediment fabrics and void ratios develop, which directly impacts macro-scale properties such as sediment compressibility. The goal of this study is to correlate...

Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Laboratory, U.S. Geological Survey, U.S. Geological Survey, All tags... USGS, WHCMSC, Woods Hole Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center, brine, calcium carbonate, compressibility, consolidation, deionized water, diatoms, earth material properties, fine-grained sediment, geoscientificInformation, illite, kaolin, kerosene, mica, recompresibility, silica silt, soil sciences, Fewer tags

Predictive soil property map: Rock content (>2mm)

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Predictive soil property map: Gypsum content

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Process model of natural attenuation in drainage from a historic mining district

Categories: Publication; Types: Citation; Tags: Acid Mine Drainage, Adsorption, Adsorption (see also Sorption), Bed, Bedrock, All tags... Calcium carbonate, Chemical Precipitation, Fate of Pollutants, Hydrogen Ion Concentration, Hydrogen ion concentrations, Limestone, Mineral Industry, Mining waste waters, Mixing, Model Studies, Precipitation (Chemical), SW 3020 Sources and fate of pollution; AQ 00002 Water Qualit, Tributaries, USA, New Mexico, Pecos R., USA, New Mexico, Pecos R., Water Resources Abstracts; Aqualine Abstracts; Environmental, Fewer tags

Reduced calcification of marine plankton in response to increased atmospheric CO sub(2)

Categories: Publication; Types: Citation; Tags: Air-water exchanges, Calcification, Carbon cycle, Carbon dioxide, D 04330 Marine; T 20015 Calcification and ossification; K 03, All tags... Ecology Abstracts; Calcium & Calcified Tissue Abstracts; Mic, Emiliania huxleyi, Gephyrocapsa oceanica, Marine ecosystems, Ocean-atmosphere system, Pacific Ocean, Phytoplankton, Skeleton, calcium carbonate, Fewer tags

Impact of the Aznalcollar mine tailing spill on groundwater

Categories: Publication; Types: Citation; Tags: AQ 00002 Water Quality; M1 220 Human Population-Hydrosphere , Aqualine Abstracts; Human Population, Aquifers, Aznalcollar, Cadmium, All tags... Calcium, Calcium carbonate, Calcium sulphate, Cobalt, Collapse, Contamination, Contamination (see also Pollution), Dams, Dry, Floods and flooding, Ground water, Groundwater (see also Aquifers), Heavy metals, Hydrogen ion concentrations, Manganese, Metals, Mineralization, Mineralization (see also Biodegradation), Mines, Neutralization, Pb, Pollution (s a contamination, individ grps below), Pollution effects, Seasons, Spain, Spills (see also Individual substances spilt), Thallium, Unflooded, Water, Water pollution, Well water, Wells, Wells (see also Boreholes), Zinc, Fewer tags

Predictive soil property map: Clay content

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags