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Author : S.A. Leake
Publisher : Unknown
Page : 4 pages
File Size : 46,9 Mb
Release : 1997
Category : Groundwater flow
ISBN : IND:30000050384720
Author : Jacob Bear,Arnold Verruijt
Publisher : Springer Science & Business Media
Page : 426 pages
File Size : 54,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400933798
Groundwater constitutes an important component of many water resource systems, supplying water for domestic use, for industry, and for agriculture. Management of a groundwater system, an aquifer, or a system of aquifers, means making such decisions as to the total quantity of water to be withdrawn annually, the location of wells for pumping and for artificial recharge and their rates, and control conditions at aquifer boundaries. Not less important are decisions related to groundwater qUality. In fact, the quantity and quality problems cannot be separated. In many parts of the world, with the increased withdrawal of ground water, often beyond permissible limits, the quality of groundwater has been continuously deteriorating, causing much concern to both suppliers and users. In recent years, in addition to general groundwater quality aspects, public attention has been focused on groundwater contamination by hazardous industrial wastes, by leachate from landfills, by oil spills, and by agricultural activities such as the use of fertilizers, pesticides, and herbicides, and by radioactive waste in repositories located in deep geological formations, to mention some of the most acute contamination sources. In all these cases, management means making decisions to achieve goals without violating specified constraints. In order to enable the planner, or the decision maker, to compare alternative modes of action and to ensure that the constraints are not violated, a tool is needed that will provide information about the response of the system (the aquifer) to various alternatives.
Author : S. A. Leake
Publisher : Unknown
Page : 4 pages
File Size : 46,5 Mb
Release : 1997
Category : Groundwater flow
ISBN : UCSD:31822021748108
Author : Michael G. McDonald,Arlen W. Harbaugh
Publisher : Unknown
Page : 546 pages
File Size : 50,9 Mb
Release : 1984
Category : Groundwater
ISBN : UOM:39015037786061
Author : Wen-Hsing Chiang,Wolfgang Kinzelbach
Publisher : Springer Science & Business Media
Page : 356 pages
File Size : 43,8 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783662055496
This book and CD-ROM offer a complete simulation system for modeling groundwater flow and transport processes. The companion full-version software (PMWIN) comes with a professional graphical user-interface, supported models and programs and several other useful modeling tools. Tools include a Presentation Tool, a Result Extractor, a Field Interpolator, a Field Generator, a Water Budget Calculator and a Graphic Viewer. Book and CD-ROM are targeted at novice and experienced groundwater modelers.
Author : S. A. Leake,Devin L. Galloway
Publisher : Unknown
Page : 52 pages
File Size : 44,9 Mb
Release : 2007
Category : Aquifers
ISBN : UCR:31210024784728
A new computer program was developed to simulate vertical compaction in models of regional ground-water flow. The program simulates ground-water storage changes and compaction in discontinuous interbeds or in extensive confining units, accounting for stress-dependent changes in storage properties. The new program is a package for MODFLOW, the U.S. Geological Survey modular finite-difference ground-water flow model. Several features of the program make it useful for application in shallow, unconfined flow systems. Geostatic stress can be treated as a function of water-table elevation, and compaction is a function of computed changes in effective stress at the bottom of a model layer. Thickness of compressible sediments in an unconfined model layer can vary in proportion to saturated thickness.
Author : Thomas E. Reilly,Arlen W. Harbaugh
Publisher : DIANE Publishing
Page : 37 pages
File Size : 51,9 Mb
Release : 2004
Category : Groundwater flow
ISBN : 9781428984158
Author : William C. Walton
Publisher : CRC Press
Page : 288 pages
File Size : 55,9 Mb
Release : 1989-01-01
Category : Technology & Engineering
ISBN : 0873711963
This valuable new book, with 2 programs on diskettes, will help practitioners in solving groundwater flow and contamination problems by integrating simulation techniques. The reader is expected to have knowledge of hydrogeology, and have access to books on groundwater hydrogeology. Two microcomputer programs, in compiled FORTRAN 77 with source codes for simulating quasi-three-dimensional groundwater flow and contaminant migration, are presented in this book. The numerical and analytical techniques incorporated in these programs are described in detail. Data entry has been simplified so that the user can run the programs without worrying about FORTRAN input file structures and editors. The basic requirements are a monitor, dot-matrix printer, and an IBM-PC or compatible computer running DOS Version 2.1 or compatible. Programs require a full 640K RAM (minus that used by DOS) for their operation.
Author : Mary P. Anderson,William W. Woessner,Randall J. Hunt
Publisher : Academic Press
Page : 630 pages
File Size : 43,5 Mb
Release : 2015-08-13
Category : Technology & Engineering
ISBN : 9780080916385
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
Author : Michael L. Merritt,Leonard F. Konikow
Publisher : Unknown
Page : 156 pages
File Size : 55,5 Mb
Release : 2000
Category : Groundwater flow
ISBN : UCR:31210024980813
Author : Wen-Hsing Chiang
Publisher : Springer Science & Business Media
Page : 415 pages
File Size : 50,9 Mb
Release : 2005-11-10
Category : Science
ISBN : 9783540275923
This book offer a complete simulation system for modeling groundwater flow and transport processes. The companion full-version software (PMWIN) comes with a professional graphical user-interface, supported models and programs and several other useful modeling tools. Tools include a Presentation Tool, a Result Extractor, a Field Interpolator, a Field Generator, a Water Budget Calculator and a Graphic Viewer. Book targeted at novice and experienced groundwater modelers.
Author : Jacob Bear
Publisher : Unknown
Page : 0 pages
File Size : 44,6 Mb
Release : 1987
Category : Groundwater
ISBN : OCLC:1087950431
Author : Jon P. Fenske,S. A. Leake,David E. Prudic
Publisher : Unknown
Page : 114 pages
File Size : 44,9 Mb
Release : 1996
Category : Groundwater flow
ISBN : UCR:31210026469476
Author : Leonard F. Konikow,Daniel J. Goode,George Z. Hornberger
Publisher : Unknown
Page : 102 pages
File Size : 55,5 Mb
Release : 1996
Category : Diffusion in hydrology
ISBN : UCR:31210010686655
Author : W. Kinzelbach
Publisher : Elsevier
Page : 332 pages
File Size : 52,8 Mb
Release : 1986-01-01
Category : Computers
ISBN : 0080870163
With the growing concern about groundwater resources both with respect to quantity and quality, the need for groundwater modelling tools is increasing. Although there are a number of excellent introductions to the concepts of groundwater flow and pollution transport, the student or practising engineer wishing to develop a model and do practical work on the computer finds that there is still a gap between the understanding of concepts and the ability to handle the actual computations. A great deal of groundwater modelling software for personal computers and microcomputers has appeared recently, but taking these models from the shelf and applying them without a background on their capabilities often leads to disappointment and frustration. This book provides the reader with all necessary details to start modelling on his own. It gives a comprehensive introduction to the major techniques currently used in the modelling of groundwater flow and pollutant transport in groundwater. Both self-contained and comprehensive, it presents a wide variety of methods currently applied in the management, protection, and remediation of groundwater resources, which allows the reader to take the step from understanding the concepts to the ability to handle actual computations. All major techniques are illustrated by a total of 19 sample programs in BASIC which can be modified by the reader to suit his own need. The programs can be run directly on an Apple II+ or compatible personal computer, and with slight modifications, most can be transferred to other microcomputers with BASIC capability and at least 48K of central memory. The necessary modifications for running the programs on an IBM-PC are indicated in the appendix. Students and professionals in the fields of hydrogeology and civil and environmental engineering will find this to be an extremely useful book. Knowledge of the basic concepts of hydrogeology is assumed and, starting from that basis, the book will enable them to understand mathematical groundwater models and write computer programs of their own.
