Browsing Earth and Environmental Sciences by Title
Now showing items 356-375 of 432
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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 ... -
Stabilization of Mercury in River Water and Sediment Using Biochars
(University of Waterloo, 2016-11-29)Mercury (Hg) is a common contaminant in air, oceans, lakes, rivers, soils, and sediments as elemental, inorganic and organic forms. Organic Hg (e.g., methylmercury (MeHg)), which is much more toxic than other forms and can ... -
Stable Isotope Fractionations of Chlorinated Ethenes Associated with Physical Processes
(University of Waterloo, 2017-01-24)Chlorinated ethenes are the widespread source of groundwater contamination, which mostly originate from industrial and dry-cleaning facilities. Since chlorinated ethenes are denser than water, they sink below the water ... -
Stable isotope mass balance of the North American Laurentian Great Lakes
(University of Waterloo, 2011-09-29)This thesis describes a method for calculating lake evaporation as a proportion of water inputs (E/I) for large surface water bodies, using stable isotope ratios of oxygen (18O/16O) and hydrogen (2H/1H) in water. Evaporation ... -
Stable Isotopes of Sulphur and Oxygen in Forested Catchments: Insight from New Techniques into Sulphur Cycling and Dissolved Organic Matter Alteration
(University of Waterloo, 2003)Dissolved organic matter (DOM) is present in all forested catchments and can be important in binding metals, absorbing UV, and the transport of nutrients (C, N, S, P). DOM is extremely heterogeneous in time and space, ...