Browsing Earth and Environmental Sciences by Title
Now showing items 287-306 of 431
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The Occurrence and Behavior of Rainfall-Triggered Landslides in Coastal British Columbia
(University of Waterloo, 2009-06-19)This thesis seeks to analyze the occurrence and behavior of rainfall-triggered landslides in coastal British Columbia. In particular, it focuses on the analysis of landslide temporal and spatial distributions occurrence ... -
On Modeling Three-Phase Flow in Discretely Fractured Porous Rock
(University of Waterloo, 2013-03-22)Numerical modeling of fluid flow and dissolved species transport in the subsurface is a challenging task, given variability and measurement uncertainty in the physical properties of the rock, the complexities of multi-fluid ... -
ON THE IMPLICATIONS OF VARIOUS APPROACHES TO GROUNDWATER SOURCE PROTECTION
(University of Waterloo, 2008-06-22)Protection of groundwater sources has become an important issue in Canada. Over the last decade many approaches to the protection of groundwater sources have evolved. Some approaches provide qualitative information while ... -
On the sensitivity of modelled groundwater recharge estimates to rain gauge network scale
(Elsevier, 2020-06-01)Rainfall is often the largest component of the water budget and even a small uncertainty percentage may lead to challenges for accurately estimating groundwater recharge as a calculated residual within a water budget ... -
An optimal framework of investment strategy in brownfields redevelopment by integrating site-specific hydrogeological and financial uncertainties
(University of Waterloo, 2009-07-28)Brownfields redevelopment has been encouraged by governments or the real estate market because of economic, social and environmental benefits. However, uncertainties in contaminated land redevelopment may cause massive ... -
Optimizing hydrological consistency by incorporating hydrological signatures into model calibration objectives
(American Geophysical Union, 2015-05-31)The simulated outcome of a calibrated hydrologic model should be hydrologically consistent with the measured response data. Hydrologic modelers typically calibrate models to optimize residual-based goodness-of-fit measures, ... -
Oxidation characteristics, acid neutralization, secondary minerals, and trace elements associated with pyrrhotite oxidation in historical waste rock
(University of Waterloo, 2022-07-27)The Detour Lake Mine is an open pit, greenstone-hosted gold mine in Ontario, Canada. Mining produced waste-rock piles that were constructed from 1983 – 1999. Redevelopment and expansion of the open pit required the excavation ... -
Paleo-Ice Sheet and Deglacial History of the Southwestern Great Slave Lake Area
(University of Waterloo, 2022-01-28)The western Laurentide Ice Sheet (LIS) is known to have experienced complex ice-flow shifts during the last glaciation due to ice divide migration and increasing topographic influence during deglaciation. Several glacial ... -
Paleoglaciological dynamics in northern Manitoba and the subglacial bed mosaic
(University of Waterloo, 2013-06-24)During the last glacial maximum (LGM), some 20 ka ago, northern Manitoba was situated beneath 3 to 4.5 km of ice, on the outer fringe of a major ice spreading center of the Laurentide Ice Sheet. The region has also been ... -
Paleozoic evolution of western Marie Byrd Land, Antarctica
(Geological Society of America, 2015-09-01)We report geochemical data from (meta-) sedimentary and igneous rocks that crop out in the Ford Ranges of western Marie Byrd Land and discuss the evolution and reworking of the crust in this region during Paleozoic subduction ... -
Paleozoic transpressional tectonics in the Beishan orogenic collage, Northwest China: Evolution of the Hongliuhe suture zone
(University of Waterloo, 2016-01-21)The Beishan orogenic collage is a southern, central subset of the Central Asian Orogenic Belt, in Northwest China. It is an accretionary orogen that was active during the early Paleozoic, transitioning to convergent ... -
Paradigm Shift: Does River Metabolism Mask the Isotopic Signal of Nitrate Sources?
(University of Waterloo, 2017-05-19)Nitrate (NO₃⁻) is the most ubiquitous contaminant in surface and groundwaters in Canada. Synthetic fertilizer application and manure production in intensive agricultural areas contribute large quantities of NO₃⁻ to the ... -
Passive In Situ Treatment of Acidic and Neutral Mine Drainage: Field and Laboratory Investigations
(University of Waterloo, 2009-12-16)Water quality degradation is the foremost environmental issue faced by the mining industry. Negative impacts on water quality are commonly associated with unmitigated drainage emanating from sulfide-bearing mine waste ... -
Passive sampling to understand and predict sources of wastewater and agricultural contamination in rural watersheds
(University of Waterloo, 2023-07-12)Passive sampling techniques have emerged as valuable tools in environmental monitoring, offering distinct advantages over traditional discrete sampling methods. Discrete sampling techniques are only representative of the ... -
Performance of Treatment Media for the Stabilization of Mercury under Variable Geochemical Conditions
(University of Waterloo, 2010-10-01)Mercury-contaminated sediments are found in many locations throughout North America and the world. Release of Hg from such sediments and subsequent biological uptake can result in biomagnification in associated ecosystems. ... -
Persistence of Artificial Sweeteners, Phosphorus and Nitrogen in Three Septic System Plumes with Differing Redox Conditions
(University of Waterloo, 2018-10-31)Septic systems are widely used for on-site wastewater treatment throughout Canada, including at most of Ontario’s provincial parks. They are frequently located in unconfined aquifer systems that may also be used for water ... -
Perturbations to nutrient and carbon cycles by river damming
(University of Waterloo, 2017-06-30)The damming of rivers represents one of the most far-reaching human modifications to the flows of water and associated matter from land to sea. Globally there are over 70 000 large dams whose reservoirs store more than ... -
Petrogenesis of Archean granitoids: Insights from inverse and forward modelling
(University of Waterloo, 2022-06-24)Archean granitoids are the earliest representation of continental crust on Earth. The Archean geological record is dominated by rocks of the tonalite–trondhjemite–granodiorite (TTG) suite, which are thought to have formed ... -
The Petrogenesis of Pseudocarbonatites in Bancroft Region, Southwestern Grenville Province
(University of Waterloo, 2022-02-15)Carbonatites are rare igneous rocks that form from fractionation of carbonate-rich, silica undersaturated magma. The petrogenesis of pseudocarbonatites (rocks that are similar to carbonatites, but without a clear mantle ... -
Petrogenesis of the Bissett Creek flake graphite deposit: Implications for regional graphite mineralization models in the Grenville Province, Ontario
(University of Waterloo, 2018-07-16)Graphite is a critical component of green and renewable energy technologies. In Ontario, graphite deposits are scattered throughout the pre-Grenvillian Laurentian Margin and the Composite Arc Belt of the Grenville Province. ...