Browsing Earth and Environmental Sciences by Title
Now showing items 41-60 of 434
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Characterizing low-sulfide instrumented waste-rock piles: image grain-size analysis and wind-induced gas transport
(University of Waterloo, 2011-01-18)This study is part of the Diavik Waste-Rock Pile Project taking place at the Diavik Diamond Mine in the Northwest Territories, Canada. The project involves the construction of three 15m-scale low sulfide test waste-rock ... -
Chlorine and Bromine Isotopic Analyses of Groundwaters and Porewaters from the Bruce Nuclear Site
(University of Waterloo, 2017-10-23)This study reports chlorine (δ37Cl) and bromine (δ81Br) isotopic values for groundwaters and pore fluids from early Paleozoic (Cambrian to Devonian) sedimentary rocks at the Bruce Nuclear Site near Kincardine, Ontario, ... -
Chlorophyll-a Mapping in a Large Lake Using Remote Sensing Imagery: A Case Study of Western Lake Ontario
(University of Waterloo, 2024-04-23)Western Lake Ontario (WLO) and Hamilton Harbour (HH) experience significant eutrophication challenges. Despite an overall decrease in the limiting nutrient phosphorus (P) inputs, recurrent nuisance (Cladophora) and ... -
Circulation and oxygen cycling in the Mediterranean Sea: Sensitivity to future climate change
(American Geophysical Union, 2016-11-12)Climate change is expected to increase temperatures and decrease precipitation in the Mediterranean Sea (MS) basin, causing substantial changes in the thermohaline circulation (THC) of both the Western Mediterranean Sea ... -
Colloid transport through basic oxygen furnace slag as permeable treatment media for pathogen removal
(University of Waterloo, 2008-09-26)Basic oxygen furnace (BOF) slag media were studied through a series of laboratory, modeling and field studies as a potential treatment material for use in on site wastewater disposal systems. Microsphere enumeration ... -
Comparative study of transient hydraulic tomography with varying parameterizations and zonations: Laboratory sandbox investigation
(Elsevier, 2017-11-01)Transient hydraulic tomography (THT) is a robust method of aquifer characterization to estimate the spatial distributions (or tomograms) of both hydraulic conductivity (K) and specific storage (Ss). However, the ... -
Comparing Paleohydrograph Reconstructions from Subsurface Stratigraphy and Topography at the Sault Ste. Marie Strandplain
(University of Waterloo, 2021-05-01)The Great Lakes are currently at high water levels, which are negatively impacting coastal infrastructure, coastal ecosystems, and stakeholders that rely on the lakes. To better understand natural fluctuations, which ... -
Comparing thallium isotopes to paleosalinity and Mo-U isotope paleoredox proxies: A case study of the Upper Devonian Kettle Point Formation, Ontario
(University of Waterloo, 2023-06-22)Black shale formations are utilised to reconstruct ancient global ocean redox conditions by analyzing and inferring their geochemical and isotopic compositions. However, the accuracy of these reconstructions can decrease ... -
Comparison of Hydraulic Tomography Survey with and without Cut-off Walls at the Narashino Site, Japan
(University of Waterloo, 2021-01-12)This study investigates the performance of several different conceptualizations of inverse modeling including the effective parameter, geological zonation and geostatistical inversion approaches, on characterizing the ... -
Comparison of the ground penetrating radar characterization of winter processes with the results of hydrological simulations
(University of Waterloo, 2014-11-26)Ground penetrating radar (GPR) is a useful tool to characterize and investigate a variety of cold region processes, including but not limited to permafrost development and glacial morphology. Despite a comprehensive coverage, ... -
A Comprehensive Sensitivity Analysis of the Weather Research and Forecasting Modeling System over Southern Ontario, Canada
(University of Waterloo, 2017-05-16)Every year weather events cause billions of dollars property damage and take many lives globally. Preventing as much damage as possible is crucial, and one way to help is through having the most accurate advance warning ... -
A comprehensive study of geothermal heating and cooling systems
(Elsevier, 2019-01-01)Geothermal heat is an energy source that is local, reliable, resilient, environmentally-friendly, and sustainable. This natural energy is produced from the heat within the earth, and has different applications, such as ... -
Constraining sources of atmospheric trace constituents with Lagrangian particle dispersion modeling
(University of Waterloo, 2013-06-19)This manuscript based thesis examines and advances methods for constraining sources of atmospheric trace constituents with a Lagrangian particle dispersion model. The method of Bayesian inversion is demonstrated, and a new ... -
Contrasting accessory mineral behavior in minimum-temperature melts: Empirical constraints from the Himalayan metamorphic core
(Elsevier, 2018-07-01)Medium-grained leucogranite in the Tama Kosi region of the Nepalese Himalayan Metamorphic Core yields a relatively narrow range of monazite 208Pb/232Th dates with a dominant population at ~21.0 Ma inferred to represent ... -
The Control of Fe and pH on the Photodegradation and Characterization of Dissolved Organic Matter in Small, Oligotrophic Canadian Shield Freshwaters
(University of Waterloo, 2017-05-19)Carbon is an essential building block for life and is involved in many biotic and abiotic processes. Thus it is imperative to have a comprehensive understanding of carbon cycling. Recent research has established that inland ... -
Control of mercury and methylmercury in contaminated sediments using biochars: A long-term microcosm study
(Elsevier, 2018-05-01)The effectiveness of activated carbon and four types of biochar, switchgrass (300 °C and 600 °C), poultry manure (600 °C), and oak (∼700 °C) with respect to mercury (Hg) and methylmercury (MeHg) control was assessed in ... -
Copper Isotope Fractionation and the Evolution of Sulfide Alteration in a Sudbury Tailings Impoundment
(University of Waterloo, 2016-10-18)The fate of dissolved Cu in the Copper Cliff Central Tailings Impoundment was investigated to better understand the extent of Cu stable isotope fractionation accompanying the oxidation of Cu-bearing sulfide minerals and ... -
Corundum formation by metasomatic reactions in Archean metapelite, SW Greenland: Exploration vectors for ruby deposits within high-grade greenstone belts
(Elsevier, 2018-05-01)Corundum (ruby-sapphire) is known to have formed in situ within Archean metamorphic rocks at several localities in the North Atlantic Craton of Greenland. Here we present two case studies for such occurrences: (1) Maniitsoq ... -
Coupling of two natural complex systems: earthquake-triggered landslides
(University of Waterloo, 2012-04-30)This thesis contains two main parts. The first part presents a database compiling 137 landslide-triggering earthquakes (LTEs) worldwide, with magnitudes greater than the minimum observed threshold for causing landslides ... -
Coupling reactive transport and travel time modeling at the watershed scale
(University of Waterloo, 2018-09-25)Nonpoint source pollution poses the greatest threat to water quality in developed countries. Modeling this type of pollution is a challenge for reactive transport models because of the change in scale: moving from a local ...