Unsaturated Flow in Hydrologic Modeling
Unsaturated Flow in Hydrologic Modeling

Author: H.J. Morel-Seytoux

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 534

ISBN-13: 940092352X

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This volume certainly is a Conference Proceedings, the Proceedings of the NATO Advanced Research Workshop (ARW) on "Unsaturated Flow in Hydrologic Modeling" held at "Les Villages du Soleil" near ArIes, France from June 13 to 17, 1988. Let me therefore acknowledge properly, at the very beginning, the gratitude of all the participants to the NATO Science Committee for its generous support and worthwhile goal of bringing together scientists of many countries to communicate and share their experiences. Particular thanks are extended to the director of the program, Dr. Luis Vega da Cunha for his interest and understanding. On the other hand this volume is also, and probably more so, a Textbook that fills a gap in the field of unsaturated flow. Many treatises on the subject present the theory in its different aspects. Hardly any explain in details how the different pieces can be put together to address realistic problems at the basin scale. The various invited contributions to the ARW were structured in a subject progression much as chapters are organized in a book. The intent of the ARW was to assess the current state of knowledge in "Unsaturated Flow" and its use in "Hydrologic Modeling Practice". In a sense the interest in fundamentals of unsaturated flow in this ARW was not just for the sake of knowledge but also and primarily for the sake of action. Can such fundamental knowledge be utilized for better management of the water resource? was the basic question.

Applied Groundwater Modeling
Applied Groundwater Modeling

Author: Mary P. Anderson

Publisher: Academic Press

Published: 2015-08-13

Total Pages: 632

ISBN-13: 0080916384

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This second edition is extensively revised throughout with expanded discussion of modeling fundamentals and coverage of advances in model calibration and uncertainty analysis that are revolutionizing the science of groundwater modeling. The text is intended for undergraduate and graduate level courses in applied groundwater modeling and as a comprehensive reference for environmental consultants and scientists/engineers in industry and governmental agencies. - Explains how to formulate a conceptual model of a groundwater system and translate it into a numerical model - Demonstrates how modeling concepts, including boundary conditions, are implemented in two groundwater flow codes-- MODFLOW (for finite differences) and FEFLOW (for finite elements) - Discusses particle tracking methods and codes for flowpath analysis and advective transport of contaminants - Summarizes parameter estimation and uncertainty analysis approaches using the code PEST to illustrate how concepts are implemented - Discusses modeling ethics and preparation of the modeling report - Includes Boxes that amplify and supplement topics covered in the text - Each chapter presents lists of common modeling errors and problem sets that illustrate concepts

Recent Advances in the Modeling of Hydrologic Systems
Recent Advances in the Modeling of Hydrologic Systems

Author: D.S Bowles

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 654

ISBN-13: 9401134804

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Modeling of the rainfall-runoff process is of both scientific and practical significance. Many of the currently used mathematical models of hydrologic systems were developed a genera tion ago. Much of the effort since then has focused on refining these models rather than on developing new models based on improved scientific understanding. In the past few years, however, a renewed effort has been made to improve both our fundamental understanding of hydrologic processes and to exploit technological advances in computing and remote sensing. It is against this background that the NATO Advanced Study Institute on Recent Advances in the Modeling of Hydrologic Systems was organized. The idea for holding a NATO ASI on this topic grew out of an informal discussion between one of the co-directors and Professor Francisco Nunes-Correia at a previous NATO ASI held at Tucson, Arizona in 1985. The Special Program Panel on Global Transport Mechanisms in the Geo-Sciences of the NATO Scientific Affairs Division agreed to sponsor the ASI and an organizing committee was formed. The committee comprised the co directors, Professor David S. Bowles (U.S.A.) and Professor P. Enda O'Connell (U.K.), and Professor Francisco Nunes-Correia (Portugal), Dr. Donn G. DeCoursey (U.S.A.), and Professor Ezio Todini (Italy).

Computational Methods in Subsurface Flow
Computational Methods in Subsurface Flow

Author: Peter S. Huyakorn

Publisher: Academic Press

Published: 2012-12-02

Total Pages: 488

ISBN-13: 0323137970

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Computational Methods in Subsurface Flow explores the application of all of the commonly encountered computational methods to subsurface problems. Among the problems considered in this book are groundwater flow and contaminant transport; moisture movement in variably saturated soils; land subsidence and similar flow and deformation processes in soil and rock mechanics; and oil and geothermal reservoir engineering. This book is organized into 10 chapters and begins with an introduction to partial differential and various solution approaches used in subsurface flow. The discussion then shifts to the fundamental theory of the finite element method, with emphasis on the Galerkin finite element method and how it can be used to solve a wide range of subsurface problems. The subjects treated range from simple problems of saturated groundwater flow to more complex ones of moisture movement and multiphase flow in petroleum reservoirs. The chapters that follow focus on fluid flow and mechanical deformation of conventional and fractured porous media; point and subdomain collocation techniques and the boundary element technique; and the applications of finite difference techniques to single- and multiphase flow and solute transport. The final chapter is devoted to other alternative numerical methods that are based on combinations of the standard finite difference approach and classical mathematics. This book is intended for senior undergraduate and graduate students in geoscience and engineering, as well as for professional groundwater hydrologists, engineers, and research scientists who want to solve or model subsurface problems using numerical techniques.

Grid Generation Methods
Grid Generation Methods

Author: Vladimir D. Liseikin

Publisher: Springer Science & Business Media

Published: 2009-10-27

Total Pages: 390

ISBN-13: 9048129125

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This text is an introduction to methods of grid generation technology in scientific computing. Special attention is given to methods developed by the author for the treatment of singularly-perturbed equations, e.g. in modeling high Reynolds number flows. Functionals of conformality, orthogonality, energy and alignment are discussed.

Vadose Zone Hydrology
Vadose Zone Hydrology

Author: Daniel B. Stephens

Publisher: CRC Press

Published: 2018-02-06

Total Pages: 347

ISBN-13: 1351405802

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Vadose Zone Hydrology describes the elements of the physical processes most often encountered by hydrogeologists and ground-water engineers in their vadose zone projects. It illustrates the application of soil physics to practical problems relevant to the characterization and monitoring of the vadose zone. It includes an introduction to physical processes, including basic flow theory, and provides examples of important field-scale processes that must be recognizable by hydrogeologists. Considerable attention is given to the concepts of recharge, including how it is most accurately evaluated in the vadose zone. Field and laboratory methods for characterizing hydraulic properties in the vadose zone are also covered, and case studies illustrating these methods are provided. New and emerging technologies for monitoring the vadose zone, particularly for the purpose of detecting contaminants, are highlighted. In the last section of the book, additional case studies are presented, demonstrating applications related to seepage detection, landfill monitoring, and soil gas investigations. This book is written from the perspective of hydrogeologists and is designed to be directly applicable and to maintain continuity and consistency between chapters. It will be an invaluable primer for environmental or geotechnical consultants, regulators, or students who have no prior formal academic training in unsaturated flow concepts. Because the text contains some of the latest advances in this field, it will be an excellent reference for geologists and engineers currently working on problems of vadose zone hydrology.

Climate Change and Terrestrial Ecosystem Modeling
Climate Change and Terrestrial Ecosystem Modeling

Author: Gordon Bonan

Publisher: Cambridge University Press

Published: 2019-02-21

Total Pages: 459

ISBN-13: 1108611397

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Climate models have evolved into Earth system models with representation of the physics, chemistry, and biology of terrestrial ecosystems. This companion book to Gordon Bonan's Ecological Climatology: Concepts and Applications, Third Edition, builds on the concepts introduced there, and provides the mathematical foundation upon which to develop and understand ecosystem models and their relevance for these Earth system models. The book bridges the disciplinary gap among land surface models developed by atmospheric scientists; biogeochemical models, dynamic global vegetation models, and ecosystem demography models developed by ecologists; and ecohydrology models developed by hydrologists. Review questions, supplemental code, and modeling projects are provided, to aid with understanding how the equations are used. The book is an invaluable guide to climate change and terrestrial ecosystem modeling for graduate students and researchers in climate change, climatology, ecology, hydrology, biogeochemistry, meteorology, environmental science, mathematical modeling, and environmental biophysics.

Rainfall-Runoff Modelling
Rainfall-Runoff Modelling

Author: Keith J. Beven

Publisher: John Wiley & Sons

Published: 2011-11-29

Total Pages: 488

ISBN-13: 1119951011

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Rainfall-Runoff Modelling: The Primer, Second Edition isthe follow-up of this popular and authoritative text, firstpublished in 2001. The book provides both a primer for the noviceand detailed descriptions of techniques for more advancedpractitioners, covering rainfall-runoff models and their practicalapplications. This new edition extends these aims to includeadditional chapters dealing with prediction in ungauged basins,predicting residence time distributions, predicting the impacts ofchange and the next generation of hydrological models. Giving acomprehensive summary of available techniques based on establishedpractices and recent research the book offers a thorough andaccessible overview of the area. Rainfall-Runoff Modelling: The Primer SecondEdition focuses on predicting hydrographs using modelsbased on data and on representations of hydrological process.Dealing with the history of the development of rainfall-runoffmodels, uncertainty in mode predictions, good and bad practice andending with a look at how to predict future catchment hydrologicalresponses this book provides an essential underpinning ofrainfall-runoff modelling topics. Fully revised and updated version of this highly populartext Suitable for both novices in the area and for more advancedusers and developers Written by a leading expert in the field Guide to internet sources for rainfall-runoff modellingsoftware