Browsing Earth and Environmental Sciences by Type "Doctoral Thesis"
Now showing items 21-40 of 98
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EVOLUTION OF LAKE ERIE BASED ON THE POSTGLACIAL SEDIMENTARY RECORD BELOW THE LONG POINT, POINT PELEE, AND POINTE-AUX-PINS FORELANDS
(University of Waterloo, 2016-09-27)The postglacial geological history of Lake Erie was interpreted primarily on the basis of borehole sedimentary sequences below the major accretionary forelands: Long Point, Point Pelee, and Pointe-aux-Pins. These data ... -
EVOLUTION OF MULTI-ARC ACCRETION SYSTEMS: A CASE STUDY FROM THE SOUTHERN BEISHAN OROGEN, CENTRAL ASIAN OROGENIC BELT, NW CHINA
(University of Waterloo, 2023-12-18)The Central Asian Orogenic Belt (CAOB) is characterized as an accretionary orogen, evolved for ca. 800 m.y from late Mesoproterozoic to early Mesozoic. Its terminal collision and accretion generally commenced in the west ... -
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 ... -
Geochemical and microbiological characterization of effluent and pore water from low-sulfide content waste rock
(University of Waterloo, 2013-04-22)Laboratory and field studies were completed to characterize the geochemistry and microbiology of drainage emanating from low-S content waste-rock test piles at the Diavik Diamond Mine (Diavik) from 2007 through 2010. The ... -
Geochemical Characterization of Groundwaters, Surface Waters and Water-Rock Interaction in an Area of Continuous Permafrost Adjacent to the Greenland Ice Sheet, Kangerlussuaq, Southwest Greenland
(University of Waterloo, 2016-01-21)Continental scale glaciations, such as those that covered much of Canada and Northern Europe during the last glacial maximum (26,000 to 19,000 y BP), can be expected to cause large disturbances to both the surficial and ... -
Global Risk Assessment of Natural Disasters: new perspectives
(University of Waterloo, 2014-06-20)Natural disasters such as earthquakes, tsunamis, landslides and volcanic activities has had devastating effects on human life. Risk is the probability of harmful consequences from the interaction of hazards and vulnerable ... -
Global Study of Tailings Dam Failures by Statistical and Remote Sensing Methods
(University of Waterloo, 2023-04-26)The growth of the mining industry, mainly driven by increased resource demands, has accelerated the production and storage of mine waste. Tailings comprise the fine-grained fraction of this waste. Due to their intrinsically ... -
Greenhouse gas cycling in experimental boreal reservoirs
(University of Waterloo, 2009-01-05)Hydroelectric reservoirs account for 59% of the installed electricity generating capacity in Canada and 26% in Ontario. Reservoirs also provide irrigation capacity, drinking water, and recreational opportunities. Further, ... -
High Resolution Packer Testing in Fractured Sedimentary Rock
(University of Waterloo, 2009-09-30)Packer tests in boreholes in fractured rock involving injection or withdrawal of water in borehole segments have been standard practice in bedrock hydraulic investigations pertaining to geotechnical and water resource ... -
Hydraulic Tomography Analyses of Different Datasets for Subsurface Heterogeneity Characterization at Various Scales
(University of Waterloo, 2023-08-21)Hydraulic Tomography (HT) has been evaluated to be a robust approach for high-resolution characterization of subsurface heterogeneity. However, geostatistics-based HT may produce overly smooth distributions of hydraulic ... -
Hydraulic Tomography in Unconfined Aquifers and the Importance of Geological Data: Laboratory and Field Studies
(University of Waterloo, 2017-01-10)This dissertation first demonstrates the effectiveness of hydraulic tomography (HT) in characterizing the heterogeneity of both the saturated and unsaturated zone parameters through a laboratory unconfined aquifer. ... -
Hydraulic Tomography: Field and Laboratory Experiments
(University of Waterloo, 2011-05-17)Accurately characterizing the distribution of hydraulic parameters is critical for any site investigation, particularly those dealing with solute or contaminant transport. Despite the fact that many tools are currently ... -
Hydrobiogeophysics: Linking geo-electrical properties and biogeochemical processes in shallow subsurface environments
(University of Waterloo, 2018-12-13)Microbially mediated reactions drive (bio)geochemical cycling of nutrients and contaminants in shallow subsurface environments. Environmental forcings exert a strong control on the timing of reactions and the spatial ... -
Hydrogeochemical, Mineralogical and Microbial Processes Occurring in Old Sulfide-Rich Tailings
(University of Waterloo, 2015-09-30)The former Sherritt-Gordon Mine, located in Sherridon Manitoba, processed approximately 7.7 Mt of sulfide ore between 1931 and 1951. The Zn-Cu volcanic massive-sulfide ore body yielded Zn and Cu concentrates with minor ... -
Impact of Climate Change on Canadian Water Resources: A Continental-Scale Hydrologic Modelling Study Using Multiple RCM Projections
(University of Waterloo, 2015-05-20)Evidence of climate change is mounting and there is nowadays an increasing international scientific consensus that current climate change is, in part, induced by anthropogenic emissions of greenhouse gases. Climate change ... -
Impact of the Wisconsinian Glaciation on Canadian Continental Groundwater Flow
(University of Waterloo, 2007-01-19)During the Quaternary period, cyclic glaciations have occurred over a global scale as the result of a climatic variability that affected the Earth's atmospheric, oceanic and glacial systems. Quaternary glaciations and their ... -
Impacts of Ethanol in Gasoline on Subsurface Contamination
(University of Waterloo, 2009-10-09)The increasing use of ethanol as a gasoline additive has raised concerns over the potential impacts ethanol might have on groundwater contamination. In North America, 10% ethanol is commonly being added to gasoline (termed ... -
In situ Chemical Oxidation of Creosote/Coal Tar Residuals: Experimental and Numerical Investigation
(University of Waterloo, 2004)Coal tar, coal tar creosote and oily wastes are often present as subsurface contaminants that may migrate below the water table, leaving a widely distributed residual source of contaminants leaching to the ground water. ... -
In-Situ Chemical Oxidation of Oil Sands Process Affected Groundwater
(University of Waterloo, 2014-12-01)Development of oil sands mining in Athabasca basin, NE Alberta has resulted in generation of more than 1 × 109 m3 of oil sands process-affected water (OSPW) mixed with fine tailings and currently stored in about 182 km2 ... -
Incorporating Advanced Surface and Subsurface Processes in Mesoscale Climate Models
(University of Waterloo, 2016-09-26)Regional anthropogenic climate change poses significant risks to the security of water resources for communities throughout the world. Current climate simulations seek to predict the risks to water resources by employing ...