Conceptual Models Of Flow And Transport In The Fractured Vadose Zone

Author : National Research Council,Commission on Geosciences, Environment, and Resources,Board on Earth Sciences and Resources,U.S. National Committee for Rock Mechanics,Panel on Conceptual Models of Flow and Transport in the Fractured Vadose Zone
Publisher : National Academies Press
Page : 398 pages
File Size : 50,7 Mb
Release : 2001-05-21
Category : Science
ISBN : 9780309170994

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Conceptual Models of Flow and Transport in the Fractured Vadose Zone by National Research Council,Commission on Geosciences, Environment, and Resources,Board on Earth Sciences and Resources,U.S. National Committee for Rock Mechanics,Panel on Conceptual Models of Flow and Transport in the Fractured Vadose Zone Pdf

Fluid flow and solute transport within the vadose zone, the unsaturated zone between the land surface and the water table, can be the cause of expanded plumes arising from localized contaminant sources. An understanding of vadose zone processes is, therefore, an essential prerequisite for cost-effective contaminant remediation efforts. In addition, because such features are potential avenues for rapid transport of chemicals from contamination sources to the water table, the presence of fractures and other channel-like openings in the vadose zone poses a particularly significant problem, Conceptual Models of Flow and Transport in the Fractured Vadose Zone is based on the work of a panel established under the auspices of the U.S. National Committee for Rock Mechanics. It emphasizes the importance of conceptual models and goes on to review the conceptual model development, testing, and refinement processes. The book examines fluid flow and transport mechanisms, noting the difficulty of modeling solute transport, and identifies geochemical and environmental tracer data as important components of the modeling process. Finally, the book recommends several areas for continued research.

Author : National Research Council,Commission on Geosciences, Environment, and Resources,Board on Earth Sciences and Resources,U.S. National Committee for Rock Mechanics,Panel on Conceptual Models of Flow and Transport in the Fractured Vadose Zone
Publisher : National Academies Press
Page : 399 pages
File Size : 54,9 Mb
Release : 2001-06-21
Category : Science
ISBN : 9780309073028

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Conceptual Models of Flow and Transport in the Fractured Vadose Zone by National Research Council,Commission on Geosciences, Environment, and Resources,Board on Earth Sciences and Resources,U.S. National Committee for Rock Mechanics,Panel on Conceptual Models of Flow and Transport in the Fractured Vadose Zone Pdf

Fluid flow and solute transport within the vadose zone, the unsaturated zone between the land surface and the water table, can be the cause of expanded plumes arising from localized contaminant sources. An understanding of vadose zone processes is, therefore, an essential prerequisite for cost-effective contaminant remediation efforts. In addition, because such features are potential avenues for rapid transport of chemicals from contamination sources to the water table, the presence of fractures and other channel-like openings in the vadose zone poses a particularly significant problem, Conceptual Models of Flow and Transport in the Fractured Vadose Zone is based on the work of a panel established under the auspices of the U.S. National Committee for Rock Mechanics. It emphasizes the importance of conceptual models and goes on to review the conceptual model development, testing, and refinement processes. The book examines fluid flow and transport mechanisms, noting the difficulty of modeling solute transport, and identifies geochemical and environmental tracer data as important components of the modeling process. Finally, the book recommends several areas for continued research.

Author : Mario Parise,John Gunn
Publisher : Geological Society of London
Page : 216 pages
File Size : 54,5 Mb
Release : 2007
Category : Nature
ISBN : 1862392242

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Natural and Anthropogenic Hazards in Karst Areas by Mario Parise,John Gunn Pdf

The book presents an overview of the main hazards affecting karst, including collapse and subsidence phenomena, hydrological hazards and human-induced geohazards. Consideration is also given to the problems of geohazard management in karst. The geological and hydrological properties of karst terrains make them among the most fragile in the world and pose serious problems for land managers. Sustainable development in these terrains requires efforts to limit geohazards of anthropogenic origin and to recognize and mitigate against those of natural origin. Aimed at providing the reader with worldwide case studies, the contributions cover a range of geological and morphological settings. Geographically, the fourteen papers discuss very different karst areas, from North America, the Caribbean and Asia to several karst areas in Europe, including the British Isles, Spain, France and Italy.

Author : R.A. Feddes,G.H.de Rooij,J.C. van Dam
Publisher : Springer Science & Business Media
Page : 392 pages
File Size : 51,7 Mb
Release : 2004-10-11
Category : Science
ISBN : 1402029187

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Unsaturated-zone Modeling by R.A. Feddes,G.H.de Rooij,J.C. van Dam Pdf

Mankind has manipulated the quantity and quality of soil water for millennia. Food production was massively increased through fertilization, irrigation and drainage. But malpractice also caused degradation of immense areas of once fertile land, rendering it totally unproductive for many generations. In populated areas, the pollutant load ever more often exceeds the soil’s capacity for buffering and retention, and large volumes of potable groundwater have been polluted or are threatened to be polluted in the foreseeable future. In the past decades, the role of soil water in climate patterns has been recognized but not yet fully understood. The soil-science community responded to this diversity of issues by developing numerical models to simulate the behavior of water and solutes in soils. These models helped improve our understanding of unsaturated-zone processes and develop sustainable land-management practices. Aimed at professional soil scientists, soil-water modelers, irrigation engineers etc., this book discusses our progress in soil-water modeling. Top scientists present case studies, overviews and analyses of strengths, weaknesses, opportunities and threats related to soil-water modeling. The contributions cover a wide range of spatial scales, and discuss fundamental aspects of unsaturated-zone modeling as well as issues related to the application of models to real-world problems.

Author : Allison Macfarlane,Rodney C. Ewing
Publisher : MIT Press
Page : 457 pages
File Size : 55,5 Mb
Release : 2006
Category : Nature
ISBN : 9780262633321

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Uncertainty Underground by Allison Macfarlane,Rodney C. Ewing Pdf

Experts from science, industry, and government discuss the unresolved scientific and technical issues surrounding the Yucca Mountain site as a geologic repository for high-level nuclear waste.

Author : Boris Faybishenko,Sally M. Benson,John E. Gale
Publisher : John Wiley & Sons
Page : 264 pages
File Size : 45,5 Mb
Release : 2015-06-15
Category : Science
ISBN : 9781118877227

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Fluid Dynamics in Complex Fractured-Porous Systems by Boris Faybishenko,Sally M. Benson,John E. Gale Pdf

Despite of many years of studies, predicting fluid flow, heat, and chemical transport in fractured-porous media remains a challenge for scientists and engineers worldwide. This monograph is the third in a series on the dynamics of fluids and transport in fractured rock published by the American Geophysical Union (Geophysical Monograph Series, Vol. 162, 2005; and Geophysical Monograph, No. 122, 2000). This monograph is dedicated to the late Dr. Paul Witherspoon for his seminal influence on the development of ideas and methodologies and the birth of contemporary fractured rock hydrogeology, including such fundamental and applied problems as environmental remediation; exploitation of oil, gas, and geothermal resources; disposal of spent nuclear fuel; and geotechnical engineering. This monograph addresses fundamental and applied scientific questions and is intended to assist scientists and practitioners bridge gaps in the current scientific knowledge in the areas of theoretical fluids dynamics, field measurements, and experiments for different practical applications. Readers of this book will include researchers, engineers, and professionals within academia, Federal agencies, and industry, as well as graduate/undergraduate students involved in theoretical, experimental, and numerical modeling studies of fluid dynamics and reactive chemical transport in the unsaturated and saturated zones, including studies pertaining to petroleum and geothermal reservoirs, environmental management and remediation, mining, gas storage, and radioactive waste isolation in underground repositories. Volume highlights include discussions of the following: Fundamentals of using a complex systems approach to describe flow and transport in fractured-porous media. Methods of Field Measurements and Experiments Collective behavior and emergent properties of complex fractured rock systems Connection to the surrounding environment Multi-disciplinary research for different applications

Author : Anonim
Publisher : Unknown
Page : 732 pages
File Size : 48,8 Mb
Release : 1998-07
Category : Nuclear energy
ISBN : MINN:31951P00679364K

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Weekly Information Report by Anonim Pdf

Author : J. Russell Boulding,Jon S. Ginn
Publisher : CRC Press
Page : 728 pages
File Size : 43,7 Mb
Release : 2016-04-19
Category : Technology & Engineering
ISBN : 1420032143

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Practical Handbook of Soil, Vadose Zone, and Ground-Water Contamination by J. Russell Boulding,Jon S. Ginn Pdf

A synthesis of years of interdisciplinary research and practice, the second edition of this bestseller continues to serve as a primary resource for information on the assessment, remediation, and control of contamination on and below the ground surface. Practical Handbook of Soil, Vadose Zone, and Ground-Water Contamination: Assessment, Prevention, and Remediation, Second Edition includes important new developments in site characterization and soil and ground water remediation that have appeared since 1995. Presented in an easy-to-read style, this book serves as a comprehensive guide for conducting complex site investigations and identifying methods for effective soil and ground water cleanup. Remediation engineers, ground water and soil scientists, regulatory personnel, researchers, and field investigators can access the latest data and summary tables to illustrate key advantages and disadvantages of various remediation methods.

Author : Vyacheslav G. Rumynin
Publisher : Springer Science & Business Media
Page : 820 pages
File Size : 50,6 Mb
Release : 2012-01-14
Category : Science
ISBN : 9789400713062

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Subsurface Solute Transport Models and Case Histories by Vyacheslav G. Rumynin Pdf

The book addresses the development of the basic knowledge of the subsurface solute transfer with a particular emphasis on field data collection and analysis coupled with modeling (analytical and numerical) tool application. The relevant theoretical developments are concerned mainly with the formulation and solution of deterministic mass-transport equations for a wide range of engineering issues in groundwater quality assessment and forecasting. The book gives many computational examples and case studies drawn from the conducted field investigations. The analyzed problems are as follows: investigation and prediction of groundwater contamination by industrial contaminants and solutions (radionuclides, chloride and nitrate brine) with special focus on the effect of (a) aquifer heterogeneity, anisotropy, and dual porosity, (b) density contrast existing between industrial waste and groundwater, or in density-stratified artesian and coastal groundwater systems; (c) physicochemical interactions that play a major role in retarding (e.g. adsorption) or enhancing (e.g. interactions between dissolved species and mobile colloids) contaminant transport; prediction of the effects of pumping on groundwater quality at wellfields; groundwater dating using stable and radioactive isotopes for prediction and assessment of contamination potential; field and laboratory tests’ design and analysis, and monitoring data interpretation; partitioning of surface and subsurface flows using isotope techniques. One of the most essential topics addressed in the book is the migration and fate of radionuclides. Model development is motivated by field data analysis from a number of radioactively contaminated sites in the Russian Federation: near-surface radioactive waste disposal sites and deep-well radioactive waste injection sites. They play a unique role in the advancement of knowledge of the subsurface behavior and fate of many hazardous radionuclides and can be considered as field-scale laboratories. Thus, the book, along with theoretical findings, contains field information, which will facilitate the understanding of subsurface solute transport and the development of a methodology for practical applications to groundwater hydrology.

Author : Anonim
Publisher : DIANE Publishing
Page : 171 pages
File Size : 54,6 Mb
Release : 2024-06-08
Category : Electronic
ISBN : 9781428917491

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Simulation of Net Infiltration and Potential Recharge Using a Distributed-Parameter Watershed Model of the Death Valley Region, Nevada and California by Anonim Pdf

Author : Howard G. Wilshire,Jane E. Nielson,Richard W. Hazlett
Publisher : Oxford University Press
Page : 640 pages
File Size : 54,9 Mb
Release : 2008-06-05
Category : Science
ISBN : 9780199881666

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The American West at Risk by Howard G. Wilshire,Jane E. Nielson,Richard W. Hazlett Pdf

The American West at Risk summarizes the dominant human-generated environmental challenges in the 11 contiguous arid western United States - America's legendary, even mythical, frontier. When discovered by European explorers and later settlers, the west boasted rich soils, bountiful fisheries, immense, dense forests, sparkling streams, untapped ore deposits, and oil bonanzas. It now faces depletion of many of these resources, and potentially serious threats to its few "renewable" resources. The importance of this story is that preserving lands has a central role for protecting air and water quality, and water supplies--and all support a healthy living environment. The idea that all life on earth is connected in a great chain of being, and that all life is connected to the physical earth in many obvious and subtle ways, is not some new-age fad, it is scientifically demonstrable. An understanding of earth processes, and the significance of their biological connections, is critical in shaping societal values so that national land use policies will conserve the earth and avoid the worst impacts of natural processes. These connections inevitably lead science into the murkier realms of political controversy and bureaucratic stasis. Most of the chapters in The American West at Risk focus on a human land use or activity that depletes resources and degrades environmental integrity of this resource-rich, but tender and slow-to-heal, western U.S. The activities include forest clearing for many purposes; farming and grazing; mining for aggregate, metals, and other materials; energy extraction and use; military training and weapons manufacturing and testing; road and utility transmission corridors; recreation; urbanization; and disposing of the wastes generated by everything that we do. We focus on how our land-degrading activities are connected to natural earth processes, which act to accelerate and spread the damages we inflict on the land. Visit www.theamericanwestatrisk.com to learn more about the book and its authors.

Author : Jan Gliński,Józef Horabik,Jerzy Lipiec
Publisher : Springer Science & Business Media
Page : 1075 pages
File Size : 55,5 Mb
Release : 2011-06-07
Category : Technology & Engineering
ISBN : 9789048135844

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Encyclopedia of Agrophysics by Jan Gliński,Józef Horabik,Jerzy Lipiec Pdf

This Encyclopedia of Agrophysics will provide up-to-date information on the physical properties and processes affecting the quality of the environment and plant production. It will be a "first-up" volume which will nicely complement the recently published Encyclopedia of Soil Science, (November 2007) which was published in the same series. In a single authoritative volume a collection of about 250 informative articles and ca 400 glossary terms covering all aspects of agrophysics will be presented. The authors will be renowned specialists in various aspects in agrophysics from a wide variety of countries. Agrophysics is important both for research and practical use not only in agriculture, but also in areas like environmental science, land reclamation, food processing etc. Agrophysics is a relatively new interdisciplinary field closely related to Agrochemistry, Agrobiology, Agroclimatology and Agroecology. Nowadays it has been fully accepted as an agricultural and environmental discipline. As such this Encyclopedia volume will be an indispensable working tool for scientists and practitioners from different disciplines, like agriculture, soil science, geosciences, environmental science, geography, and engineering.

Author : Donald L. Sparks
Publisher : Academic Press
Page : 422 pages
File Size : 42,7 Mb
Release : 2008-09-22
Category : Science
ISBN : 9780123743602

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Advances in Agronomy by Donald L. Sparks Pdf

Advances in Agronomy continues to be recognized as a leading reference and a first-rate source for the latest research in agronomy. As always, the subjects covered are varied and exemplary of the myriad of subject matter dealt with by this long-running serial. Maintains the highest impact factor among serial publications in agriculture Presents timely reviews on important agronomy issues Enjoys a long-standing reputation for excellence in the field

Author : National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Fracture Characterization and Fluid Flow
Publisher : National Academies Press
Page : 568 pages
File Size : 42,8 Mb
Release : 1996-08-27
Category : Science
ISBN : 9780309049962

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Rock Fractures and Fluid Flow by National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Fracture Characterization and Fluid Flow Pdf

Scientific understanding of fluid flow in rock fracturesâ€"a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storageâ€"has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.

Author : Yongli Gao,E. Calvin Alexander Jr.
Publisher : Geological Society of America
Page : 318 pages
File Size : 40,6 Mb
Release : 2016-01-28
Category : Caves
ISBN : 9780813725161

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Caves and Karst Across Time by Yongli Gao,E. Calvin Alexander Jr. Pdf

"Knowledge and understanding of cave and karst systems have evolved dramatically since the creation of the Geological Society of America in 1888. This book, which came out of a session during GSA's 2013 Annual Meeting, highlights the changes in the study and application of cave and karst systems since GSA's origin, while looking ahead to future advancements"--