Browsing Earth and Environmental Sciences by Title
Now showing items 221-240 of 431
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Land use changes and salinization: Impacts on lake phosphorus cycling and water quality
(University of Waterloo, 2023-09-05)Over the past few decades, there has been a rapid global increase in urbanization accompanied by the conversion of natural or agricultural land into more impervious land cover. This ongoing acceleration of global urbanization ... -
Landslide damming in Western Sichuan Province, China, with special reference to the 1786 Dadu River and 1933 Diexi events
(University of Waterloo, 2015-08-04)Landslides and landslide damming events can be triggered by various processes, and they can also cause catastrophic damage. With the help of historical documents and Geographic Information System (GIS), historical landslide ... -
Landslide Hazard and Climate Change in the Mountain Glacial Environment of Northwest North America
(University of Waterloo, 2017-09-21)The aim of this thesis was to improve the understanding of the complex interactions between climate change and landslide behavior in the periglacial mountain environment of northwest North America. In particular, this ... -
Landslides triggered by the 1946 Ancash Earthquake (Peru) and geologic controls on the mechanisms of initial rock slope failure
(University of Waterloo, 2009-01-22)The 1946 M7.3 Ancash earthquake triggered a large number of landslides in an epicentral area along the continental divide in the Andes of Peru. Reconnaissance reports by Silgado (1947, 1951), Heim (1949) and Rüegg (1950) ... -
LASS-ICP-MS collection of trace element and 87Sr/86Sr isotope data using a novel uneven distribution of sample material for otolith microchemistry
(University of Waterloo, 2022-01-26)Understanding the behaviour and movement of fish populations is crucial to developing plans to properly manage fisheries, and to predict effects of ongoing environmental change. In northern regions, physically tracking ... -
The Late Proterozoic to Palaeozoic Tectonic Evolution of the Long Range Mountains in Southwestern Newfoundland
(University of Waterloo, 2007-04-04)Ever since the first plate-tectonic model for the Appalachians was proposed, the Laurentian margin has been interpreted as having experienced a collision-related dynamo-thermal event during the Middle Ordovician Taconic ... -
Laurentide Ice Sheet dynamics evolution in the inner-ice sheet region of northeastern Quebec, Canada
(University of Waterloo, 2020-05-06)The study of past ice sheets, such as the Laurentide Ice Sheet (LIS), which covered most of northern North America during the last glaciation (last ~100-kyr), provides critical knowledge about the long-term behaviour of ... -
Learning about Ontario's Paleozoic Geology with Virtual Reality Google Expedition Tours
(2020-02)How well can you interpret or place into context the different geological features or rock types that are exposed along roadways, rivers, coastlines or construction sites? Here in the Department of Earth and Environmental ... -
A Least-Cost Strategy for Evaluating a Brownfields Redevelopment Project Subject to Indoor Air Exposure Regulations
(University of Waterloo, 2012-08-31)Over the course of the past several decades the benefits of redeveloping brownfields have been widely recognized. Actions have been taken to foster sustainable redevelopment of brownfields by government, policy makers and ... -
Linking soil moisture content and carbon dioxide fluxes: From batch experiments to process-based modelling
(University of Waterloo, 2020-02-19)The emissions of carbon dioxide (CO2) from soil to the atmosphere represent a major flux within the global carbon cycle. Soil CO2 fluxes depend on environmental factors including soil moisture and oxygen, and on intrinsic ... -
Long-lived Anatexis in the Exhumed Middle Crust from the Torngat Orogen and Eastern Core Zone: Constraints from Geochronology, Petrochronology, and Phase Equilibria Modeling
(University of Waterloo, 2016-05-11)The Torngat Orogen (southeastern Churchill Province, Canada) is a transpressional Paleoproterozoic orogen resulting from the collision between the North Atlantic Craton and the Core Zone (an Archean micro-continent) during ... -
Long-Term Fate of an Emplaced Coal Tar Creosote Source
(University of Waterloo, 2007-10-09)An emplaced source of coal tar creosote within the sandy Borden research aquifer has provided an opportunity to document the long term (5140 days) natural attenuation for this complex mixture. Plumes of dissolved chemicals ... -
Macropore flow and transport dynamics in partially saturated low permeability soils
(University of Waterloo, 2007-12-11)Near-surface sediments play an important role in governing the movement of water and contaminants from the land surface through the vadose zone to groundwater. Generally, low permeability surficial soils restrict water ... -
Marine redox conditions during deposition of Late Ordovician and Early Silurian organic-rich mudrocks in the Siljan ring district, central Sweden
(Elsevier, 2017-05-10)The Late Ordovician Period witnessed the second largest mass extinction in the Phanerozoic Eon and the Hirnantian glaciation. To infer ocean redox conditions across the Ordovician-Silurian transition, we measured the U (as ... -
Mathematical and Statistical Investigation of Steamflooding in Naturally Fractured Carbonate Heavy Oil Reservoirs
(University of Waterloo, 2013-04-23)A significant amount of Viscous Oil (e.g., heavy oil, extra heavy oil, and bitumen) is trapped in Naturally Fractured Carbonate Reservoirs also known as NFCRs. The word VO endowment in NFCRs is estimated at ~ 2 Trillion ... -
THE MEASUREMENT OF INTER-PARTICLE DIFFUSION COEFFICIENTS IN MINE WASTES
(University of Waterloo, 2021-05-04)Acid mine drainage (AMD) is the release of acidic waters from mines, waste-rock piles and mine tailings impoundments containing high concentrations of SO4, Fe(II) and other metal(oid)s. The bulk of AMD generation occurs ... -
Mechanisms controlling the recycling of nutrient silicon in freshwater sediments: An experimental study of the interactions between silicon, iron and phosphorus
(University of Waterloo, 2020-12-23)Dissolved silicon (DSi) is an essential nutrient for numerous terrestrial and aquatic organisms. In freshwater systems, including streams, rivers and lakes, an important class of siliceous algae are diatoms. Human activities, ... -
A mechanistic approach to assessment of the geochemical evolution of low sulfide mine-waste rock
(University of Waterloo, 2019-01-04)The potential for mine wastes to generate elevated concentrations of solutes including metals, sulfate, and reduced pH exists wherever mine-waste rock is stockpiled at the Earth’s surface representing one of the world’s ... -
A Mechanistic Derivation of The Monod Equation For Biofilm in Porous Media
(University of Waterloo, 2021-12-20)A mechanistic derivation of the Monod bioreaction equation is presented. The numerical model developed for this derivation involves four processes. 1)On the pore scale, substrate diffuses from the bulk aqueous phase crossing ... -
Mercury distribution and speciation in biochar particles reacted with contaminated sediment up to 1030days: A synchrotron- based study
(Elsevier, 2019-04-20)A previous long-term microcosm experiment showed mercury (Hg) in the aqueous phase of contaminated sediment was effectively stabilized through the addition of biochar. The present study focuses on the application of ...