Browsing Earth and Environmental Sciences by Title
Now showing items 125-144 of 431
-
Factors influencing the occurrence of energy wellbore leakage in Alberta
(University of Waterloo, 2016-03-22)Wellbore leakage refers to the unwanted leakage of subsurface fluids along the annuli of oil and gas wellbores. Wellbore leakage is of concern because it may cause natural gas - and exceptionally other fluids such as brine, ... -
Fate and Transport of Land Applied Waste Greenhouse Feed Water During Field Infiltration Experiments
(University of Waterloo, 2016-04-29)Because of the high concentration of greenhouses in Essex County, greenhouse feed water discharges are considered as a potential contributor to nuisance and harmful algal blooms and hypoxia in western Lake Erie. Waste ... -
Fate and Transport of Naphthenic Acids in Glacial Aquifers
(University of Waterloo, 2004)Naphthenic acids (NAs) are carboxylated alkanes and cycloalkanes concentrated in wastewater during oil sands processing. The general chemical formula is C{n}H{n+Z}O{2}, where n represents the number of carbon atoms and ... -
Fate and Transport of Synthetic DNA in Surface Water
(University of Waterloo, 2021-09-29)Unlike conventional salt or dye tracers, artificial/synthetic DNA hydrologic tracers are essentially non-toxic and several can be used simultaneously. These features have implications for DNA to be used to better understand ... -
Fate of Adsorbed U(VI) during Sulfidization of Lepidocrocite and Hematite
(American Chemical Society, 2017-02-21)The impact on U(VI) adsorbed to lepidocrocite (gamma-FeOOH) and hematite (alpha-Fe2O3) was assessed when exposed to aqueous sulfide (S(II)(aq)) at pH 8.0. With both minerals, competition between S(-II) and U(VI) for surface ... -
Fate of Chlorinated Compounds in a Sedimentary Fractured Rock Aquifer in South Central Wisconsin
(University of Waterloo, 2008-10-22)A study was carried out in a sedimentary fractured rock site located in south central Wisconsin, US, which was impacted by DNAPL releases estimated to occur in the 1950’s and 1960’s. The majority of the DNAPL has accumulated ... -
Field derived phosphorus accumulation rates and fractionation in bioretention cells
(University of Waterloo, 2022-09-23)Bioretention cells are commonly used green infrastructure in urban stormwater management systems. They show promising performance in managing stormwater and mitigating a multitude of pollutants. In urban catchments, they ... -
A field study of event based, seasonally affected, depression focused recharge in glaciated terrain
(University of Waterloo, 2019-04-26)To observe the dynamics of depression focused recharge (DFR) and the effects of seasonality related to transient surface water features, a field scale experiment was designed and conducted within glacial terrain in southern ... -
Field Trial of Residual LNAPL Recovery Using CO2-Supersaturated Water Injection in the Borden Aquifer
(University of Waterloo, 2007-01-24)The ability of supersaturated water injection (SWI) to recover non-aqueous phase liquids (NAPLs) was studied at the field scale as part of an ongoing program to evaluate its applicability to groundwater remediation. SWI ... -
Field-Scale Evaluation of Enhanced Agricultural Management Practices Using a Novel Unsaturated Zone Nitrate Mass Load Approach
(University of Waterloo, 2007-01-23)The monitoring of nitrate mass load through the unsaturated zone below agricultural land was proposed as a novel technique to assess the effect of agricultural best management practices (BMPs). The objectives of the study ... -
Fingerprinting and tracing the signature of basement-hosted unconformity-type uranium alteration through thick Quaternary tills: an example from the Thelon Basin, Nunavut
(University of Waterloo, 2016-05-17)The question of whether or not it is possible to trace the signature of alteration haloes surrounding deep-seated unconformity-type U mineralization through thick Quaternary tills is one of great importance for those ... -
Fingerprinting Quaternary Subglacial Processes on Hall Peninsula, Baffin Island, using Multiproxy Data
(University of Waterloo, 2014-01-23)It is important to study subglacial environments in northern Canada for many reasons, such as to develop a more comprehensive understanding of glacial landscape development and to aid in mineral exploration. The purpose ... -
Fluid-present anatexis of Neoarchean tonalite and amphibolite in the Western Shandong Province
(Elsevier, 2019-02)Metatonalite and amphibolite from the Taishan region of the Western Shandong Province in the North China Craton record c. 2.60 Ga fluid-present partial melting via the breakdown of biotite, plagioclase and quartz to produce ... -
Fluoride Removal from Contaminated Water by Limestone Reactor and Phosphate Rock Reactor
(University of Waterloo, 2014-08-05)Fluorosis, which results in mottling of teeth enamel, softening of bones, ossification of tendons and ligaments, and even neurologic damage, is endemic in many mid-latitude regions. It is caused by the long-term ingestion ... -
Fold-and-thrust belt deformation of the Hongliuhe Group: a Permian tectonic closure record of the Central Asian Orogenic Belt, NW China
(University of Waterloo, 2011-05-20)The Early Permian strata of the Hongliuhe Group, NW China, experienced a thin-skinned fold-and-thrust belt style of deformation that recorded the final stages of amalgamation of the Beishan orogenic collage, a part of the ... -
Forested Watersheds and Water Supply: Exploring Effects of Wildfires, Silviculture, and Climate Change on Downstream Waters
(University of Waterloo, 2023-06-13)Drinking water supplies for much of society originate in forests. To preserve the capability of these forests to produce clean and easily treatable water, source water supply and protection strategies focus in particular ... -
From Source to Sink: Petrogenesis of Cretaceous Anatectic Granites from the Fosdick Migmatite-Granite Complex, West Antarctica
(Oxford University Press, 2016-07-01)Anatectic granites from the Fosdick migmatite-granite complex yield U-Pb zircon crystallization ages that range from 115 to 100Ma, with a dominant grouping at 107-100 Ma, which corresponds to the timing of dome formation ... -
Fully oxygenated water columns over continental shelves before the Great Oxidation Event
(Nature, 2019-02-25)Late Archaean sedimentary rocks contain compelling geochemical evidence for episodic accumulation of dissolved oxygen in the oceans along continental margins before the Great Oxidation Event. However, the extent of this ... -
Gallium isotope fractionation during adsorption on clay and oxide minerals: implications for using gallium isotopes as a geochemical tracer
(University of Waterloo, 2022-05-02)Increasing climate change leads to the imbalance between silicate, sulfide, and carbonate weathering fluxes, influencing the global carbon budget. Thus, understanding this balance is critical for understanding future global ... -
Garnet fractionation, progressive melt loss and bulk composition variations in anatectic metabasites: Complications for interpreting the geodynamic significance of TTGs
(Elsevier, 2020-05)Tonalite-trondhjemite-granodiorite (TTG) suites constitute a large proportion of the Archean geological record; however, the geodynamic processes that generated them, and Archean continental crust in general, remain a ...