Subsurface Fluid Flow (ground-water and Vadose Zone) Modeling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Subsurface Fluid Flow (ground-water and Vadose Zone) Modeling write by Joseph D. Ritchey. This book was released on 1996. Subsurface Fluid Flow (ground-water and Vadose Zone) Modeling available in PDF, EPUB and Kindle.
Conceptual Models of Flow and Transport in the Fractured Vadose Zone
Conceptual Models of Flow and Transport in the Fractured Vadose Zone - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Conceptual Models of Flow and Transport in the Fractured Vadose Zone write by National Research Council. This book was released on 2001-05-21. Conceptual Models of Flow and Transport in the Fractured Vadose Zone available in PDF, EPUB and Kindle. 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.
Unsaturated-zone Modeling
Unsaturated-zone Modeling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Unsaturated-zone Modeling write by R.A. Feddes. This book was released on 2004-10-11. Unsaturated-zone Modeling available in PDF, EPUB and Kindle. 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.
Modeling Groundwater Flow and Contaminant Transport
Modeling Groundwater Flow and Contaminant Transport - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Modeling Groundwater Flow and Contaminant Transport write by Jacob Bear. This book was released on 2010-01-18. Modeling Groundwater Flow and Contaminant Transport available in PDF, EPUB and Kindle. In many parts of the world, groundwater resources are under increasing threat from growing demands, wasteful use, and contamination. To face the challenge, good planning and management practices are needed. A key to the management of groundwater is the ability to model the movement of fluids and contaminants in the subsurface. The purpose of this book is to construct conceptual and mathematical models that can provide the information required for making decisions associated with the management of groundwater resources, and the remediation of contaminated aquifers. The basic approach of this book is to accurately describe the underlying physics of groundwater flow and solute transport in heterogeneous porous media, starting at the microscopic level, and to rigorously derive their mathematical representation at the macroscopic levels. The well-posed, macroscopic mathematical models are formulated for saturated, single phase flow, as well as for unsaturated and multiphase flow, and for the transport of single and multiple chemical species. Numerical models are presented and computer codes are reviewed, as tools for solving the models. The problem of seawater intrusion into coastal aquifers is examined and modeled. The issues of uncertainty in model input data and output are addressed. The book concludes with a chapter on the management of groundwater resources. Although one of the main objectives of this book is to construct mathematical models, the amount of mathematics required is kept minimal.
Groundwater Models for Resources Analysis and Management
Groundwater Models for Resources Analysis and Management - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Groundwater Models for Resources Analysis and Management write by Aly I. El-Kadi. This book was released on 2017-11-22. Groundwater Models for Resources Analysis and Management available in PDF, EPUB and Kindle. Written by renowned experts in the field, this book assesses the status of groundwater models and defines models and modeling needs in the 21st century. It reviews the state of the art in model development and application in regional groundwater management, unsaturated flow/multiphase flow and transport, island modeling, biological and virus transport, and fracture flow. Both deterministic and stochastic aspects of unsaturated flow and transport are covered. The book also introduces a unique assessment of models as analysis and management tools for groundwater resources. Topics covered include model vs. data uncertainty, accuracy of the dispersion/convection equation, protocols for model testing and validation, post-audit studies, and applying models to karst aquifers.
