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Numerical Modeling Of Possible Saltwater Intrusion Mechanisms In The Multiple Layer Coastal Aquifer System Of The Gulf Of Thailand
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Book Synopsis Numerical Modeling of Possible Saltwater Intrusion Mechanisms in the Multiple Layer Coastal Aquifer System of the Gulf of Thailand by : Phatcharasak Arlai
Download or read book Numerical Modeling of Possible Saltwater Intrusion Mechanisms in the Multiple Layer Coastal Aquifer System of the Gulf of Thailand written by Phatcharasak Arlai and published by kassel university press GmbH. This book was released on 2007 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Quality Policy and Management in Asia by : Cecilia Tortajada
Download or read book Water Quality Policy and Management in Asia written by Cecilia Tortajada and published by Routledge. This book was released on 2014-10-14 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asia's 48 countries have an estimated 1.757 billion urban population and 2.4 billion people in rural areas (or approximately 60 per cent of the global population). Divided into central, eastern, southern, south-eastern and western regions, the continent is also extremely heterogeneous in terms of water quality conditions. The policies and management practices vary significantly from one country to another, and even within one country, depending on specific economic, political, social, environmental, legal and institutional factors. In order to appreciate the complexities associated with water quality policy and management, it is important to acknowledge the multiplicity of interrelated and often conflicting events, issues, actors and interests, both within and outside the water sector that impact them. This complexity, alongside institutional inability for systematic and coordinated collaboration, are potent reasons as to why, in the second decade of the 21st century, formulation and implementation of efficient water quality management policies benefitting humankind and the environment have still not been achieved. The book was originally published as a special issue of the International Journal of Water Resources Development.
Book Synopsis The Computer Model SHARP, a Quasi-three-dimensional Finite-difference Model to Simulate Freshwater and Saltwater Flow in Layered Coastal Aquifer Systems by : Hedeff I. Essaid
Download or read book The Computer Model SHARP, a Quasi-three-dimensional Finite-difference Model to Simulate Freshwater and Saltwater Flow in Layered Coastal Aquifer Systems written by Hedeff I. Essaid and published by . This book was released on 1990 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multi-objective Management Of Saltwater Intrusion In Groundwater by : Minh Thuan Tran
Download or read book Multi-objective Management Of Saltwater Intrusion In Groundwater written by Minh Thuan Tran and published by IOS Press. This book was released on 2004-01-01 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is a Ph.D. dissertation. Groundwater aquifers are an important resource in coastal regions. In many areas where there is no fresh surface water from rivers or reservoirs, the development of ground water resources is practically the only alternative to storage of rainwater. However, the coastal aquifers are very vulnerable to the seawater intrusion through the overdraft of groundwater exploitation or insufficient recharge from upstream, etc. In order to control sea water intrusion, varying forms of saltwater intrusion management models have been studied. They address the optimal ground water pumping and recharge schedules with or without surface water supplies for conjunctive use. Contents include: Introduction, Literature Review, The Response of Saltwater Intrusion Lengths with Respect to the Stresses and Transmissivities - Sensitivity Analysis Based on the SHARP Computer Code, Conic Quadratic Programming, Development of the Methodology for the Multi-Objective Saltwater Intrusion Management Model, Hypothetical Example Results for the Quasi-Three-Dimensional SHARP Model Simulation of a One-Layered Aquifer, The Results of the Real-World Case Application, Conclusions and Recommendations."
Book Synopsis Study and Modelling of Saltwater Intrusion Into Aquifers by : Emilio Custodio
Download or read book Study and Modelling of Saltwater Intrusion Into Aquifers written by Emilio Custodio and published by . This book was released on 1993 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Salt Water Intrusion by : Samuel F. Atkinson
Download or read book Salt Water Intrusion written by Samuel F. Atkinson and published by CRC Press. This book was released on 2018-01-18 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a summary of the status and potential for salt water intrusion into ground water in the contiguous united states. While the focus is on resultant limitation in the agricultural usage of ground water, the book is not limited to this singular limitation in resource usage.
Book Synopsis Hydrogeophysical Modeling of Saltwater Intrusion by : Ian Paul Gottschalk
Download or read book Hydrogeophysical Modeling of Saltwater Intrusion written by Ian Paul Gottschalk and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal aquifers worldwide are under threat of saltwater intrusion, in which seawater migrates into terrestrial aquifers, resulting in the loss of fresh groundwater resources. It is critical for proactive groundwater management to understand the current state and development of the salinity distribution due to saltwater intrusion. The data used to monitor the salinity distribution commonly come from boreholes, which, while useful, are limited in spatial sampling and often do not provide sufficient detail to fully capture the lateral variations in lithology and salinity seen in coastal regions experiencing saltwater intrusion. The geophysical airborne electromagnetic (AEM) method has been used increasingly to support groundwater management at the regional scale. In this thesis, I investigate the use of the AEM method to inform the modeling of saltwater intrusion. The study area for this thesis is the coastal Salinas Valley, CA, where saltwater has migrated, in some locations, over 10 km inland; the rate and inland extent of saltwater intrusion have been exacerbated by high rates of groundwater extraction to support agriculture in the area. Understanding the complex pattern of salinity and unique hydrogeology of the study area are the first steps to modeling the evolution of the salinity distribution. I analyzed AEM data, collected in the study area, to understand the distribution of fresher water and saltwater in the three principal aquifers within the study area. The distribution of fresher water in the upper two aquifers illustrates a hydrogeologic process that mitigates saltwater intrusion, while the distribution of saltwater in the lower two aquifers reveals locations where saltwater can quickly migrate downward from one aquifer to the other. I conducted a synthetic experiment with the goal of understanding the complexity of a numerical model of saltwater intrusion necessary to accurately predict the salinity distribution, as well as the information contained within acquired AEM data to inform such a model. I found a set of hydrogeologic processes and corresponding parameters that were necessary to predict the geometry and location of the transition zone, where the salinity varies from freshwater to saltwater. I found the parameters AEM data were most informative of, and also found that it was crucial to accurately capture the rock-physics relationship: the relationship between the material properties of the subsurface and the electrical resistivity, which the AEM data can be used to estimate. I developed a method to reduce the uncertainty in the rock-physics relationship. I used a machine-learning approach to improve estimates of the resistivity by incorporating auxiliary information at my study area that describes that location and aquifer corresponding to available measurements of material properties. I used AEM data to inform the modeling of saltwater intrusion in my study area, with the goal of reducing the uncertainty in the development of the salinity distribution. I applied the AEM data, acquired in my study area, to a numerical model of saltwater intrusion to reduce the uncertainty in the prediction of the future salinity distribution, and the rate of salinization, of the two lower aquifers in my study area. I found that the predicted future salinity, and the rate of salinization, in the aquifers was lower than was predicted before the AEM data were used to reduce uncertainty.
Book Synopsis Salt Water Intrusion in the United States by : Bob D. Newport
Download or read book Salt Water Intrusion in the United States written by Bob D. Newport and published by . This book was released on 1977 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deutsche Nationalbibliografie by : Die deutsche Nationalbibliothek
Download or read book Deutsche Nationalbibliografie written by Die deutsche Nationalbibliothek and published by . This book was released on 2008 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Salt Water Intrusion in the United States by :
Download or read book Salt Water Intrusion in the United States written by and published by . This book was released on 1975 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Saltwater Intrusion in Coastal Aquifers by : Boutaina Bouzouf
Download or read book Numerical Simulation of Saltwater Intrusion in Coastal Aquifers written by Boutaina Bouzouf and published by . This book was released on 2015 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The modeling of groundwater in costal aquifers is an important and difficult issue in water resources. The primary difficulty resides in efficient and accurate simulation of the movement of the saltwater front. This thesis is devoted to the sharp interface numerical study of one and two dimensional of seawater intrusion into coastal aquifers. The Finite Volume method is adopted here to solve the set of simultaneous diffusion differential equations describing the motion of saltwater and freshwater separated by a sharp interface. These diffusion equations are based on the Dupuit approximation and are obtained from integration over the vertical dimension. The one dimensional Finite Volume model is first being validated using academic test case studies with known close from solutions. The second purpose of this study is to compare two dimensional numerical methods, Finite Volume method and Sharp model based on Finite Difference method when applied to a Llobregat aquifer, in Barcelona, Spain. Both methods are using the same mathematical formulation for the sharp interface. The comparison between both methods indicates that Finite Volume method provides predictions closer to the observed results.
Book Synopsis Numerical Modeling of Salt-water Intrusion in the Northern Guam Lens by : Dinshaw N. Contractor
Download or read book Numerical Modeling of Salt-water Intrusion in the Northern Guam Lens written by Dinshaw N. Contractor and published by . This book was released on 1981 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Saltwater Intrusion in Coastal Aquifers by : Chan-Hee Park
Download or read book Saltwater Intrusion in Coastal Aquifers written by Chan-Hee Park and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Utilizing the analytical solution of the steady state sharp interface saltwater intrusion model in coastal aquifers, a multi-objective optimization formulation of pumping rates and well locations in a coastal aquifer is formulated to solve problems in water management practice. The proposed optimization problem uses progressive genetic algorithm technique and the method developed is applied to the previous work of Cheng et al. [2000]. Through this analysis, several other applications are provided to demonstrate the use of the model in practical applications. This work is the first to optimize pumping rates as well as well locations simultaneously in coastal aquifer management. Known the limitation of the analytical solution, the work is expanded to cover the physics of saltwater intrusion in a more realistic way. This is variable density flow in a variably saturated porous medium. In this method, mixing between two fluids such as saltwater and freshwater can be described and the porous medium is also expanded to cover saturated and unsaturated zones together. One of the objectives is to develop a three dimensional physical model, verify the model, and apply to various applications in coastal aquifers. The developed model, TechFlow, is used to investigate instability issues associated with the numerical solution of the Elder problem in the perspective that includes physical instability issues associated with density differences used in numerical solutions, sensitivity of the solution to idealization irregularity, and the importance of accurate estimation of the velocity field and its association to the grid density levels that is necessary to solve the problem accurately. Saltwater intrusion hydrodynamics in a beach under the influence of tidal effects is also investigated using TechFlow. Based on the results of TechFlow with the use of various boundary conditions for the transport equation, the saltwater intrusion hydrodynamics in a beach under the influence of tidal effects shows unique dynamics. These solutions are primarily affected by density differences, tidal effects on a mild slope, variably saturated porous medium and finite domain solution condition. TechFlow is also used to investigate saltwater upconing beneath pumping wells both two- and three-dimensional applications.
Book Synopsis Numerical Simulation of Salt-water Intrusion in Coastal Aquifers by : George Francis Pinder
Download or read book Numerical Simulation of Salt-water Intrusion in Coastal Aquifers written by George Francis Pinder and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Salt-water Intrusion in Coastal Aquifers by : George F. Pinder
Download or read book Numerical Simulation of Salt-water Intrusion in Coastal Aquifers written by George F. Pinder and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation and Effective Management of Saltwater Intrusion in Coastal Aquifers by : Mohammed Salih Hussain
Download or read book Numerical Simulation and Effective Management of Saltwater Intrusion in Coastal Aquifers written by Mohammed Salih Hussain and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulations of Salt Water Intrusion in Ranot Aquifer, Thailand by : Siripong Kalumpasut
Download or read book Numerical Simulations of Salt Water Intrusion in Ranot Aquifer, Thailand written by Siripong Kalumpasut and published by . This book was released on 1994 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: