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Groundwater Flow And Thermal Modeling To Support A Preferred Conceptual Model For The Large Hydraulic Gradient North Of Yucca Mountain
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Book Synopsis Groundwater Flow and Thermal Modeling to Support a Preferred Conceptual Model for the Large Hydraulic Gradient North of Yucca Mountain by :
Download or read book Groundwater Flow and Thermal Modeling to Support a Preferred Conceptual Model for the Large Hydraulic Gradient North of Yucca Mountain written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to report on the results of a preliminary modeling framework to investigate the causes of the large hydraulic gradient north of Yucca Mountain. This study builds on the Saturated Zone Site-Scale Flow and Transport Model (referenced herein as the Site-scale model (Zyvoloski, 2004a), which is a three-dimensional saturated zone model of the Yucca Mountain area. Groundwater flow was simulated under natural conditions. The model framework and grid design describe the geologic layering and the calibration parameters describe the hydrogeology. The Site-scale model is calibrated to hydraulic heads, fluid temperature, and groundwater flowpaths. One area of interest in the Site-scale model represents the large hydraulic gradient north of Yucca Mountain. Nearby water levels suggest over 200 meters of hydraulic head difference in less than 1,000 meters horizontal distance. Given the geologic conceptual models defined by various hydrogeologic reports (Faunt, 2000, 2001; Zyvoloski, 2004b), no definitive explanation has been found for the cause of the large hydraulic gradient. Luckey et al. (1996) presents several possible explanations for the large hydraulic gradient as provided below: The gradient is simply the result of flow through the upper volcanic confining unit, which is nearly 300 meters thick near the large gradient. The gradient represents a semi-perched system in which flow in the upper and lower aquifers is predominantly horizontal, whereas flow in the upper confining unit would be predominantly vertical. The gradient represents a drain down a buried fault from the volcanic aquifers to the lower Carbonate Aquifer. The gradient represents a spillway in which a fault marks the effective northern limit of the lower volcanic aquifer. The large gradient results from the presence at depth of the Eleana Formation, a part of the Paleozoic upper confining unit, which overlies the lower Carbonate Aquifer in much of the Death Valley region. The Eleana Formation is absent at borehole UE-25 p#1 at Yucca Mountain, which penetrated the lower Carbonate Aquifer directly beneath the lower volcanic confining unit. The Site-scale model uses an area of very low permeability, referenced as the east-west barrier, to simulate the large hydraulic gradient. The Site-scale model is further refined in this study to provide a base-case model for exploring the geologic causes of the large hydraulic gradient.
Book Synopsis A Model of the Large Hydraulic Gradient at Yucca Mountain, Nevada Test Site, Based on Hydraulic Conductivity Contrasts Between Cenozoic and Paleozoic Rocks by : Eric William Strom
Download or read book A Model of the Large Hydraulic Gradient at Yucca Mountain, Nevada Test Site, Based on Hydraulic Conductivity Contrasts Between Cenozoic and Paleozoic Rocks written by Eric William Strom and published by . This book was released on 1993 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Evaluating Ground-water Flow Models by : Thomas E. Reilly
Download or read book Guidelines for Evaluating Ground-water Flow Models written by Thomas E. Reilly and published by DIANE Publishing. This book was released on 2004 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Ground-water Modeling by : Jacob Bear
Download or read book Fundamentals of Ground-water Modeling written by Jacob Bear and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heat as a Tool for Studying the Movement of Ground Water Near Streams by : David Arthur Stonestrom
Download or read book Heat as a Tool for Studying the Movement of Ground Water Near Streams written by David Arthur Stonestrom and published by . This book was released on 2003 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conceptual Models of Groundwater Flow in the Saturated and Unsaturated Zones in the Vicinity of Yucca Mountain, Nevada by : James L. Osiensky
Download or read book Conceptual Models of Groundwater Flow in the Saturated and Unsaturated Zones in the Vicinity of Yucca Mountain, Nevada written by James L. Osiensky and published by . This book was released on 1986 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sensitivity Studies of Unsaturated Groundwater Flow Modeling for Groundwater Travel Time Calculations at Yucca Mountain, Nevada by :
Download or read book Sensitivity Studies of Unsaturated Groundwater Flow Modeling for Groundwater Travel Time Calculations at Yucca Mountain, Nevada written by and published by . This book was released on 1995 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsaturated flow has been modeled through four cross-sections at Yucca Mountain, Nevada, for the purpose of determining groundwater particle travel times from the potential repository to the water table. This work will be combined with the results of flow modeling in the saturated zone for the purpose of evaluating the suitability of the potential repository under the criteria of 10CFR960. One criterion states, in part, that the groundwater travel time (GWTT) from the repository to the accessible environment must exceed 1,000 years along the fastest path of likely and significant radionuclide travel. Sensitivity analyses have been conducted for one geostatistical realization of one cross-section for the purpose of (1) evaluating the importance of hydrological parameters having some uncertainty and (2) examining conceptual models of flow by altering the numerical implementation of the conceptual model (dual permeability (DK) and the equivalent continuum model (ECM). Results of comparisons of the ECM and DK model are also presented in Ho et al.
Book Synopsis On the Development of a Three-dimensional Finite-element Groundwater Flow Model of the Saturated Zone, Yucca Mountain, Nevada by :
Download or read book On the Development of a Three-dimensional Finite-element Groundwater Flow Model of the Saturated Zone, Yucca Mountain, Nevada written by and published by . This book was released on 1996 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of a preliminary three-dimensional model of the saturated zone at Yucca Mountain, the potential location for a high-level nuclear waste repository, is presented. The development of the model advances the technology of interfacing: (1)complex three-dimensional hydrogeologic framework modeling; (2) fully three-dimensional, unstructured, finite-element mesh generation; and (3) groundwater flow, heat, and transport simulation. The three-dimensional hydrogeologic framework model is developed using maps, cross sections, and well data. The framework model data are used to feed an automated mesh generator, designed to discretize irregular three-dimensional solids, a nd to assign materials properties from the hydrogeologic framework model to the tetrahedral elements. The mesh generator facilitated the addition of nodes to the finite-element mesh which correspond to the exact three-dimensional position of the potentiometric surface based on water-levels from wells. A ground water flow and heat simulator is run with the resulting finite- element mesh, within a parameter-estimation program. The application of the parameter-estimation program is designed to provide optimal values of permeability and specified fluxes over the model domain to minimize the residual between observed and simulated water levels.
Book Synopsis Analytic Element Modeling of Groundwater Flow by : Henk M. Haitjema
Download or read book Analytic Element Modeling of Groundwater Flow written by Henk M. Haitjema and published by . This book was released on 2005 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Training Notes in Ground-water Hydrology by : Gordon D. Bennett
Download or read book Technical Training Notes in Ground-water Hydrology written by Gordon D. Bennett and published by . This book was released on 1990 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogeology and Simulation of Ground-water Flow at Superfund-site Wells G and H, Woburn, Massachusetts by : Virginia De Lima
Download or read book Hydrogeology and Simulation of Ground-water Flow at Superfund-site Wells G and H, Woburn, Massachusetts written by Virginia De Lima and published by . This book was released on 1989 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Efficient Deterministic-probabilistic Approach to Modeling Regional Ground-water Flow by : Gary L. Guymon
Download or read book An Efficient Deterministic-probabilistic Approach to Modeling Regional Ground-water Flow written by Gary L. Guymon and published by . This book was released on 1988 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reactive Flow Modeling of Hydrothermal Systems by : Michael Kühn
Download or read book Reactive Flow Modeling of Hydrothermal Systems written by Michael Kühn and published by Springer. This book was released on 2004-03-24 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book introduces the topic of geochemical modeling of fluids in subsurface and hydrothermal systems. The intention is to serve as a textbook for graduate students in aqueous, environmental and groundwater geochemistry, despite the fact that its focus is on the special topic of geochemistry in hydrothermal systems, it also provides new insights for experienced researchers with respect to the topic of reactive transport. The overall purpose is to give the reader an understanding of the processes that control the chemical composition of waters in hydrothermal systems and to highlight the interfaces between chemistry, geothermics and hydrogeology. From the reviews: "..is a nice, compact introduction to the principles of modeling coupled fluid flow and fluid-mineral reactions in active geothermal systems, as used for heating and electricity generation." ( Christoph A. Heinrich, ECONOMIC GEOLOGY, June 2004)
Download or read book WHC written by E. A. Crooks and published by . This book was released on 1981 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Digital Model for Simulating Steady-state Ground-water and Heat Flow by : J. E. Reed
Download or read book Digital Model for Simulating Steady-state Ground-water and Heat Flow written by J. E. Reed and published by . This book was released on 1985 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Vertical Ground-water Flux of the Rio Grande from Ground-water Temperature Profiles, Central New Mexico by : James R. Bartolino
Download or read book Numerical Simulation of Vertical Ground-water Flux of the Rio Grande from Ground-water Temperature Profiles, Central New Mexico written by James R. Bartolino and published by . This book was released on 1999 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ground-water Modeling by : James W. Mercer
Download or read book Ground-water Modeling written by James W. Mercer and published by . This book was released on 1981 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
