Determination of Factors that Influence Wetting Front Instability in Unsaturated Porous Media PDF Download
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Author: Timothy M. Kelly
Publisher:
ISBN:
Category : Hazardous waste site remediation
Languages : en
Pages : 414
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Book Description
Author: Timothy M. Kelly
Publisher:
ISBN:
Category : Hazardous waste site remediation
Languages : en
Pages : 414
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Book Description
Author: Robert John Glass
Publisher:
ISBN:
Category : Porous materials
Languages : en
Pages : 416
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Book Description
Author: Glen A. Diment
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 414
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Book Description
Author: Robert J. Glass
Publisher:
ISBN:
Category : Fluid mechanics
Languages : en
Pages : 352
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Book Description
Author: Blake Paul Tullis
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
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Book Description
Author: John H. Cushman
Publisher: CRC Press
ISBN: 1315354535
Category : Science
Languages : en
Pages : 1726
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Book Description
This new edition adds several new chapters and is thoroughly updated to include data on new topics such as hydraulic fracturing, CO2 sequestration, sustainable groundwater management, and more. Providing a complete treatment of the theory and practice of groundwater engineering, this new handbook also presents a current and detailed review of how to model the flow of water and the transport of contaminants both in the unsaturated and saturated zones, covers the protection of groundwater, and the remediation of contaminated groundwater.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 896
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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 1296
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Wetting front instability is an important phenomenon affecting fluid flow and contaminant transport in unsaturated soils and rocks. It causes the development of fingers which travel faster than would a uniform front and thus bypass much of the medium. Water saturation and solute concentration in such fingers tend to be higher than in the surrounding medium. During infiltration, fingering may cause unexpectedly rapid arrival of water and solute at the water-table. This notwithstanding, most models of subsurface flow and transport ignore instability and fingering. In this report, we survey the literature to assess the extent to which this may or may not be justified. Our overview covers experiments, theoretical studies, and computer simulations of instability and fingering during immiscible two-phase flow and transport, with emphasis on infiltration into soils and fractured rocks. Our description of instability in an ideal fracture (Hele-Shaw cell) includes an extension of existing theory to fractures and interfaces having arbitrary orientations in space. Our discussion of instability in porous media includes a slight but important correction of existing theory for the case of an inclined interface. We conclude by outlining some potential directions for future research. Among these, we single out the effect of soil and rock heterogeneities on instability and preferential flow as meriting special attention in the context of nuclear waste storage in unsaturated media.
Author: Robert D. Morrison
Publisher: CRC Press
ISBN: 9781420050622
Category : Science
Languages : en
Pages : 390
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Book Description
Offering state-of-the-art techniques for both attorneys and environmental scientists, Environmental Forensics: Principles and Applications discusses non-chemical methods such as corrosion modeling, inventory reconciliation, and aerial photography interpretation. The book also covers chemical fingerprinting used to identify the origin and age of a contaminant release- relevant techniques include the use of radioactive isotope analysis, degradation modeling based on half-lives, and fuel additives such as MTBE. Environmental Forensics provides case study examples of environmental trial exhibits. It covers misused techniques that can bias the scientific validity of a trial exhibit, such as scale exaggeration, use of statistical manipulation, data contouring, and selective presentation. Detailed information is provided for identifying and interpreting those portions of environmental reports that are "target rich" sources of scientific biases. These include the identification of false positive, false negative and the intentional manipulation of environmental data that occurs primarily in the sample collection process.
