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Effects Of Variations In Hydraulic Conductivity And Flow Conditions On Groundwater Flow And Solute Transport In Peatlands
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Book Synopsis Effects of Variations in Hydraulic Conductivity and Flow Conditions on Groundwater Flow and Solute Transport in Peatlands by :
Download or read book Effects of Variations in Hydraulic Conductivity and Flow Conditions on Groundwater Flow and Solute Transport in Peatlands written by and published by . This book was released on 2007 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Groundwater Flow and Solute Transport: Pushing the Hidden Boundary by : Hongbin Zhan
Download or read book Advances in Groundwater Flow and Solute Transport: Pushing the Hidden Boundary written by Hongbin Zhan and published by MDPI. This book was released on 2019-10-01 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, the study of groundwater flow and solute transport has advanced into new territories that are beyond conventional theories, such as Darcy’s law and Fick’s law. The studied media have changed from permeable porous and fractured ones to much less permeable ones, such as clay and shale. The studied pore sizes have also changed from millimetres to micro-meters or even nano-meters. The objective of this Special Issue is to report recent advances in groundwater flow and solute transport that push the knowledge boundary into new territories which include, but are not limited to, flow and transport in sloping aquifer/hillslopes, coupled unsaturated and saturated flow, coupled aquifer-vertical/horizontal/slant well flow, interaction of aquifer with connected and disconnected rivers, non-Darcian flow, anomalous transport beyond the Fickian scheme, and flow and transport in extremely small pore spaces such as shale and tight sandstones. Contributions focusing on innovative experimental, numerical, and analytical methods for understanding unconventional problems, such as the above-listed ones, are encouraged, and contributions addressing flow and transport at interfaces of different media and crossing multiple temporal and spatial scales are of great value
Book Synopsis The Effects of Layered Differences in Hydraulic Conductivity of Groundwater by : Alexander J. McCarthy
Download or read book The Effects of Layered Differences in Hydraulic Conductivity of Groundwater written by Alexander J. McCarthy and published by . This book was released on 2016 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to determine how contaminants from pharmaceutical, agriculture, and industry will move through groundwater systems, it is imperative to further our understanding of the relationship between physical, biological, and chemical properties of aquifers and transport and transformation of these products. Several studies have explored how heterogeneities in groundwater systems affect the flow and subsequent transport of solute at regional, intermediate, and local basin scales. This study expands on these studies to investigate the effects of vertically stratified differences in hydraulic conductivity on solute transport. A simple basin geometry was modeled using the finite element method. Ratios of hydraulic conductivity between the vertically stratified layers of 1, 2, 10, and 100 were simulated. In order to estimate an average residence time for the system as a whole as well as for each layer, a System Time Method was derived. This new method can be carried out a priori (relative to numerical modeling) and also allows the comparison of relative early or late time solute transport for different cases of vertically stratified hydraulic conductivity values. A method for estimating residence times in each layer also results in the ability to perform an approximation for the level of solute consumption. The simulations of a simple basin model that were carried out in this thesis provide an initial validation of the System Time Method.
Book Synopsis Observing, Modeling and Understanding Processes in Natural and Managed Peatlands by : Michel Bechtold
Download or read book Observing, Modeling and Understanding Processes in Natural and Managed Peatlands written by Michel Bechtold and published by Frontiers Media SA. This book was released on 2022-05-25 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stochastic Analysis of the Effect of Spatial Variations of Hydraulic Conductivity on Groundwater Flow by : Adel Ahmed Mohammed Bakr
Download or read book Stochastic Analysis of the Effect of Spatial Variations of Hydraulic Conductivity on Groundwater Flow written by Adel Ahmed Mohammed Bakr and published by . This book was released on 1976 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Training Notes in Ground-water Hydrology by : Gordon D. Bennett
Download or read book Technical Training Notes in Ground-water Hydrology written by Gordon D. Bennett and published by . This book was released on 1990 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1998 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling the Effects of Climatic Changes on Groundwater Flow and Solute Transport Systems by : James Scot Reichard
Download or read book Modeling the Effects of Climatic Changes on Groundwater Flow and Solute Transport Systems written by James Scot Reichard and published by . This book was released on 1995 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical and Multivariate Statistical Analysis of Hydrogeology and Geochemistry in Large Peatlands by : Andrew Stephen Reeve
Download or read book Numerical and Multivariate Statistical Analysis of Hydrogeology and Geochemistry in Large Peatlands written by Andrew Stephen Reeve and published by . This book was released on 1996 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pore-water samples and hydraulic measurements were collected in the Albany River drainage basin of the Hudson Bay Lowland (HBL). Pore-water chemistry was evaluated using bivariate plots, cluster analysis, and principal component analysis to determine the importance of groundwater and to evaluate geochemical processes within the peat. Conceptual models of peatland hydrology were evaluated using numerical groundwater flow and mass transport simulations. These simulations were used to interpret the sparse hydraulic data sets collected in the HBL and collected by others in the Glacial Lake Agassiz peatlands. Data analysis of the peat pore-water chemistry indicates that: 1) the transport of dissolved constituents from the mineral soil into the peat column is a dominant control on peat pore-water chemistry, 2) bogs are characterized by elevated concentrations of dissolved organic carbon, CH4, SiO2 K+ and larger mineral ion balance errors, whereas fens are characterized by their higher pH and alkalinity, 3) organic acids are important anions in bog pore waters, 4) marine sediments are releasing SO42−, Cl−, and Na+ to the peat column at several locations in the study area, and 5) methane concentrations and SO42− concentrations are inversely related, suggesting that the presence of marine sediments may reduce methane production in portions of the HBL. Groundwater flow simulations indicate that the hydraulic conductivity of mineral soil underlying the peat influences the generation of vertical hydraulic gradients in the peat column and the development of local groundwater flow cells related to bog water-table mounds. Conceptual models used to explain differences in surface-water chemistry in different peat landforms assume that advective transport is the dominant process controlling pore-water chemistry. Numerical simulations indicate that dispersive mixing, driven by lateral flow, is capable of moving solutes in the mineral soil to surface water in peatlands. Dispersive mixing may influence carbon cycling in peatlands, moving labile substrate produced at the peat surface downward in the peat column. High methane pore-water concentration in the lower portion of the peat column may result from the conversion of this labile substrate to methane.
Book Synopsis Seawater Effects on Water Flow and Solute Mobility in Peat Soils by : Lennart Gosch
Download or read book Seawater Effects on Water Flow and Solute Mobility in Peat Soils written by Lennart Gosch and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis aimed to reveal seawater effects on peat soil processes using different laboratory flow-through experiments. The results show that the effects depend on the environmental conditions, which are in turn affected by the peatland's land-use history. The interaction of geochemical and hydrophysical soil properties determines the mobility of solutes. Initial leaching and desorption processes and, later on, an enhanced, sulfate-related decomposition of organic matter may lead to nutrient emission into adjacent aquatic ecosystems.eng
Book Synopsis Techniques to Determine Spatial Variations in Hydraulic Conductivity of Sand and Gravel by : Kathryn M. Hess
Download or read book Techniques to Determine Spatial Variations in Hydraulic Conductivity of Sand and Gravel written by Kathryn M. Hess and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact of Groundwater Abstraction on Groundwater Flow and Solute Transport, Western Posrt Basin, Victoria M.Sc by : Xiang Cheng
Download or read book Impact of Groundwater Abstraction on Groundwater Flow and Solute Transport, Western Posrt Basin, Victoria M.Sc written by Xiang Cheng and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Variation in Hydraulic Conductivity on Water Table Drawdown by : W. J. Bentley
Download or read book The Effect of Variation in Hydraulic Conductivity on Water Table Drawdown written by W. J. Bentley and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Double Constraint Inversion Methodology by : Wouter Zijl
Download or read book The Double Constraint Inversion Methodology written by Wouter Zijl and published by Springer. This book was released on 2017-12-26 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes a novel physics-based approach to inverse modeling that makes use of the properties of the equations governing the physics of the processes under consideration. It focuses on the inverse problems occurring in hydrogeology, but the approach is also applicable to similar inverse problems in various other fields, such as petroleum-reservoir engineering, geophysical and medical imaging, weather forecasting, and flood prediction. This approach takes into consideration the physics – for instance, the boundary conditions required to obtain a well-posed mathematical problem – to help avoid errors in model building and therefore enhance the reliability of the results. In addition, this method requires less computation time and less computer memory. The theory is presented in a comprehensive, not overly mathematical, way, with three practice-oriented hydrogeological case studies and a comparison with the conventional approach illustrating the power of the method. Forward and Inverse Modeling of Groundwater Flow is of use to researchers and graduate students in the fields of hydrology, as well as to professional hydrologists within industry. It also appeals to geophysicists and those working in or studying petroleum reservoir modeling and basin modeling.
Book Synopsis Meteorological and Geoastrophysical Abstracts by :
Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1991 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the world's literature on meteorology, climatology, atmospheric chemistry and physics, physical oceanography, hydrology, glaciology, and related environmental sciences.
