Browsing Earth and Environmental Sciences by Title
Now showing items 355-374 of 435
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Reservoir screening criteria for deep slurry injection
(University of Waterloo, 2005)Deep slurry injection is a process of solid waste disposal that involves grinding the solid waste to a relatively fine-grained consistency, mixing the ground waste with water and/or other liquids to form slurry, and disposing ... -
A Rock Borehole Packer System for Identifying Hydraulically Active Fractures Under Natural Gradient Flow
(University of Waterloo, 2008-05-27)To improve capabilities for understanding and predicting contaminant migration in fractured rock there is need for better field methods to identify the fractures that have active groundwater flow. Current methods have ... -
The Role of Nitrate in Controlling Iron Release from Sediment during Anoxia in Dimictic, Fresh Water Lakes
(University of Waterloo, 2018-01-16)Recent research suggests the availability of reduced iron (Fe) is key in allowing cyanobacteria to outcompete eukaryotic phytoplankton. Cyanobacteria have a greater need for Fe than their eukaryotic competition and are ... -
The Role of Transverse Faults in Late Gold Mineralization: A Structural Study of the Maskinonge Lake Fault, Michipicoten Greenstone Belt, Ontario
(University of Waterloo, 2023-10-25)The Maskinonge Lake fault is a late NW-striking fault that occurs at a high angle to the structural features of the gold-producing Goudreau Lake Deformation Zone (GLDZ) in the Michipicoten greenstone belt. The fault is ... -
Seismic Coupling and Hydrological Responses
(University of Waterloo, 2006)In seismology, the capability of an earthquake to induce other seismic events has been widely accepted for decades. For example, the term aftershock involves a strong relation of such a seismic event with the incidence ... -
Selenate Reduction by Granular Iron and the Associated Isotope Fractionation
(University of Waterloo, 2013-11-27)Research in selenium isotopes has been gaining interest as new contaminated sites are identified around the world. Selenium is an emerging contaminant, as it is increasingly being released through anthropogenic activities. ... -
Sequential Extraction of Trace Metals as Geochemical Indicators of Land Use Near Ancient Metallurgical Sites in Faynan, Jordan
(University of Waterloo, 2023-01-23)Civilizations are tied to soils through a reliance on agriculture. In the Faynan Valley, southern Jordan, both the individuals who tend to the soils and the soils themselves have evolved through a series of environmental ... -
The Silurian Amabel and Guelph formations of the Bruce Peninsula: insights into stratigraphy and diagenesis from petrography and ground-penetrating radar
(University of Waterloo, 2006)Regional study of the Silurian Amabel and Guelph (including the Eramosa Member) formations in the subsurface on the Bruce Peninsula provides petrographic details of these pervasively dolomitized rocks, defines lithofacies ... -
A simple and complex physical model of the Laurentian Great Lakes used to engage students and community members
(The Geological Society of America North-Central Section, 2015-05-19)The Laurentian Great Lakes, Earth’s most-easily recognized feature from space, is of a size, complexity, and significance that can be difficult to comprehend. To address this we have developed corresponding simple and ... -
Simulating the Impact of Methane Gas Production from the Clearwater B Formation on the Regional Groundwater Flow System
(University of Waterloo, 2016-01-19)The production of natural gas from a saline aquifer will reduce the pressure regime in that aquifer to some degree. Simultaneously, this relief in pressure will causes gas to be exsolved out of the aqueous phase, which ... -
Simulating the impact of water infrastructure on groundwater and surface water within the Laurel Creek Watershed
(University of Waterloo, 2017-01-23)As the urbanization of the City of Waterloo, the infrastructure system expanded fast in the last couple decades. The increased population gave a higher load to the Laurel Creek Watershed. At the same time, the aged ... -
Simulating the Predevelopment Hydrologic Condition of the San Joaquin Valley, California
(University of Waterloo, 2009-09-23)The San Joaquin Valley is part of the Great Central Valley of California, a major agricultural centre and food supplier for the United States. This area has significant water management concerns given the very high water ... -
Simulating the TCE DNAPL Source Zone Below the Water Table at the Santa Susanna Field Laboratory
(University of Waterloo, 2015-01-26)Both 2D and 3D numerical models using the CompFlow Bio were built to simulate TCE introduced from 1940 through 1990 due to industrial activities, in the fractured bedrock with a turbidities sequence of sandstones with shale ... -
Simulation of Thermal Energy Transport in a Fully-Integrated Surface/Subsurface Framework
(University of Waterloo, 2009-04-20)Thermal stream loadings from both natural and anthropogenic sources have significant relevance with respect to ecosystem health and water resources management, particularly in the context of future climate change. In recent ... -
Site Investigation and Modelling of DNAPL Migration in a Fractured-Porous Media
(University of Waterloo, 2010-09-01)The present work is in the area of site and computational investigations dealing with migration of a dense non-aqueous phase liquid (DNAPL) within a discrete fractures network embedded in a porous rock media at field scale ... -
Soil Oxygen Monitoring with Fibre Optode Sensors: Experimental Evaluation in Soil Columns under Fluctuating Water Table and Freeze Thaw Conditions
(University of Waterloo, 2017-01-23)The biogeochemical functioning of natural and engineered environments is closely linked to spatial and temporal variations in molecular oxygen (O2) concentrations. A luminescence-based, Multi-Fibre Optode (MuFO) microsensor ... -
Some Aspects of Arsenic and Antimony Geochemistry in High Temperature Granitic Melt – Aqueous Fluid System and in Low Temperature Permeable Reactive Barrier – Groundwater System
(University of Waterloo, 2008-02-11)Arsenic and antimony are important trace elements in magmatic-hydrothermal systems, geothermal systems and epithermal deposits, but their partitioning behavior between melt and aqueous fluid is not well understood. The ... -
Source and Fate of Contaminants in a Pit Lake and Water Treatment at the Faro Mine Complex
(University of Waterloo, 2022-05-20)The Faro Mine Complex (FMC) is an abandoned zinc-lead mine in Yukon, Canada that requires extensive remediation efforts to manage the environmental liabilities associated with mine wastes stockpiled at the site. Active ... -
Spatio-Temporal Patterns in Net Anthropogenic Nitrogen and Phosphorus Inputs Across the Grand River Watershed
(University of Waterloo, 2016-09-23)Over the last century, human activities have dramatically increased the inputs of nitrogen (N) and phosphorus (P) to land, resulting in increased eutrophication of aquatic systems, and degradation of drinking water quality. ... -
Speciation dynamics of oxyanion contaminants (As, Sb, Cr) in argillaceous suspensions during oxic-anoxic cycles
(Elsevier, 2018-04-01)Argillaceous geological formations are considered promising repositories for waste containing inorganic contaminants. However, the sequestration capacity of an argillaceous natural barrier may change as a result of dynamic ...