Application of PEST to Re-calibrate the Groundwater Availability Model for the Edwards-Trinity (Plateau) and Pecos Valley Aquifers PDF Download

Author: Steven C. Young
Publisher:
ISBN:
Category : Edwards Aquifer (Tex.)
Languages : en
Pages : 215

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Author: John M. Sharp Jr.
Publisher: Geological Society of America
ISBN: 0813712157
Category : Science
Languages : en
Pages : 312

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"One of the world's great karstic aquifer systems, the Edwards aquifer system supplies water for more than 2 million people and for agricultural, municipal, industrial, and recreational uses. This volume reviews the current state of knowledge, current and emerging challenges to wise use of the aquifer system, and some technologies that must be adopted to address these challenges"--

Author: Sebastien Lazarus Poore
Publisher:
ISBN: 9781392811924
Category :
Languages : en
Pages :

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Book Description
The parameter estimation and calibration process of hydrological models is inherently time consuming and computationally demanding. The PEST (Parameter ESTimation) suite of software is a robust program used for automatically calibrating numerical models such as groundwater models built with IWFM (Integrated Water Flow Model.) Typically, representative parameter values are desired by the hydrological modeler, such as hydraulic conductivity, storativity, and specific yield. To facilitate this process, the modeler provides PEST with a set of field observations, including groundwater heads and streamflow measurements. These observations are used by PEST to compare the model results found from estimated parameter values, to the actual, physical observations. But altering the variables in the PEST control file can greatly affect the outcome of calibration runs. To determine the effects of each of these variables in the PEST control file on the model calibration process, a sensitivity analysis is performed using a synthetic groundwater model developed in IWFM. A set of “observations” is developed after running the synthetic groundwater model, which are then given to PEST to attempt to find the solution to the inverse problem. The effects of altering different control variables in the PEST control file is then explored, by seeing how altering these variables affects the solution to the inverse problem.

Author: Zoran Stevanović
Publisher: Springer
ISBN: 3319128507
Category : Science
Languages : en
Pages : 698

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This practical training guidebook makes an important contribution to karst hydrogeology. It presents supporting material for academic courses worldwide that include this and similar topics. It is an excellent sourcebook for students and other attendees of the International Karst School: Characterization and Engineering of Karst Aquifers, which opened in Trebinje, Bosnia & Herzegovina in 2014 and which will be organized every year in early summer. As opposed to more theoretical works, this is a catalog of possible engineering interventions in karst and their implications. Although the majority of readers will be professionals with geology/hydrogeology backgrounds, the language is not purely technical making it accessible to a wider audience. This means that the methodology, case studies and experiences presented will also benefit water managers working in karst environments.

Author: Tom Gleeson
Publisher: John Wiley & Sons
ISBN: 111916656X
Category : Technology & Engineering
Languages : en
Pages : 557

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Permeability is the primary control on fluid flow in the Earth’s crust and is key to a surprisingly wide range of geological processes, because it controls the advection of heat and solutes and the generation of anomalous pore pressures. The practical importance of permeability – and the potential for large, dynamic changes in permeability – is highlighted by ongoing issues associated with hydraulic fracturing for hydrocarbon production (“fracking”), enhanced geothermal systems, and geologic carbon sequestration. Although there are thousands of research papers on crustal permeability, this is the first book-length treatment. This book bridges the historical dichotomy between the hydrogeologic perspective of permeability as a static material property and the perspective of other Earth scientists who have long recognized permeability as a dynamic parameter that changes in response to tectonism, fluid production, and geochemical reactions.

Author: Hans-Jörg G. Diersch
Publisher: Springer Science & Business Media
ISBN: 364238739X
Category : Science
Languages : en
Pages : 1018

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FEFLOW is an acronym of Finite Element subsurface FLOW simulation system and solves the governing flow, mass and heat transport equations in porous and fractured media by a multidimensional finite element method for complex geometric and parametric situations including variable fluid density, variable saturation, free surface(s), multispecies reaction kinetics, non-isothermal flow and multidiffusive effects. FEFLOW comprises theoretical work, modeling experiences and simulation practice from a period of about 40 years. In this light, the main objective of the present book is to share this achieved level of modeling with all required details of the physical and numerical background with the reader. The book is intended to put advanced theoretical and numerical methods into the hands of modeling practitioners and scientists. It starts with a more general theory for all relevant flow and transport phenomena on the basis of the continuum approach, systematically develops the basic framework for important classes of problems (e.g., multiphase/multispecies non-isothermal flow and transport phenomena, discrete features, aquifer-averaged equations, geothermal processes), introduces finite-element techniques for solving the basic balance equations, in detail discusses advanced numerical algorithms for the resulting nonlinear and linear problems and completes with a number of benchmarks, applications and exercises to illustrate the different types of problems and ways to tackle them successfully (e.g., flow and seepage problems, unsaturated-saturated flow, advective-diffusion transport, saltwater intrusion, geothermal and thermohaline flow).

Author: Gary Meffe
Publisher: Island Press
ISBN: 1597267899
Category : Nature
Languages : en
Pages : 333

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Book Description
Today's natural resource managers must be able to navigate among the complicated interactions and conflicting interests of diverse stakeholders and decisionmakers. Technical and scientific knowledge, though necessary, are not sufficient. Science is merely one component in a multifaceted world of decision making. And while the demands of resource management have changed greatly, natural resource education and textbooks have not. Until now. Ecosystem Management represents a different kind of textbook for a different kind of course. It offers a new and exciting approach that engages students in active problem solving by using detailed landscape scenarios that reflect the complex issues and conflicting interests that face today's resource managers and scientists. Focusing on the application of the sciences of ecology and conservation biology to real-world concerns, it emphasizes the intricate ecological, socioeconomic, and institutional matrix in which natural resource management functions, and illustrates how to be more effective in that challenging arena. Each chapter is rich with exercises to help facilitate problem-based learning. The main text is supplemented by boxes and figures that provide examples, perspectives, definitions, summaries, and learning tools, along with a variety of essays written by practitioners with on-the-ground experience in applying the principles of ecosystem management. Accompanying the textbook is an instructor's manual that provides a detailed overview of the book and specific guidance on designing a course around it. Download the manual here. Ecosystem Management grew out of a training course developed and presented by the authors for the U.S. Fish and Wildlife Service at its National Training Center in Shepherdstown, West Virginia. In 20 offerings to more than 600 natural resource professionals, the authors learned a great deal about what is needed to function successfully as a professional resource manager. The book offers important insights and a unique perspective dervied from that invaluable experience.

Author: Corinna Abesser
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 228

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Book Description
Selected papers from a symposium on A new Focus on Integrated Analysis of Groundwater-Surface Water Systems, held during the International Union of Geodesy and Geophysics XXIV General Assembly in Perugia, Italy, 11-13 July 2007.

Author: Gail Williamson
Publisher: Geological Society of London
ISBN: 9781862390430
Category : Science
Languages : en
Pages : 312

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Author:
Publisher:
ISBN:
Category : Marine eutrophication
Languages : en
Pages : 152

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