Download or read book Tidal Dynamics in Coastal Aquifers written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal Hydrogeology written by Jimmy Jiao and published by Cambridge University Press. This book was released on 2019-05-09 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers a comprehensive volume discussing groundwater problems in coastal areas, spanning fundamental science to practical water management.

Download or read book Tidal Dynamics of Coastal Watertables written by A. M. Aseervatham and published by . This book was released on 1994 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Groundwater Flow and Contaminant Transport written by Jacob Bear and published by Springer Science & Business Media. This book was released on 2010-01-18 with total page 851 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many parts of the world, groundwater resources are under increasing threat from growing demands, wasteful use, and contamination. To face the challenge, good planning and management practices are needed. A key to the management of groundwater is the ability to model the movement of fluids and contaminants in the subsurface. The purpose of this book is to construct conceptual and mathematical models that can provide the information required for making decisions associated with the management of groundwater resources, and the remediation of contaminated aquifers. The basic approach of this book is to accurately describe the underlying physics of groundwater flow and solute transport in heterogeneous porous media, starting at the microscopic level, and to rigorously derive their mathematical representation at the macroscopic levels. The well-posed, macroscopic mathematical models are formulated for saturated, single phase flow, as well as for unsaturated and multiphase flow, and for the transport of single and multiple chemical species. Numerical models are presented and computer codes are reviewed, as tools for solving the models. The problem of seawater intrusion into coastal aquifers is examined and modeled. The issues of uncertainty in model input data and output are addressed. The book concludes with a chapter on the management of groundwater resources. Although one of the main objectives of this book is to construct mathematical models, the amount of mathematics required is kept minimal.

Download or read book Tidal Dynamics Coastal Flooding and Cycles of Gravitational Force written by Fergus J. Wood and published by Springer. This book was released on 1986-02-03 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rev., expanded ed. of: The strategic role of perigean spring tides in nautical history and North American coastal flooding, 1635-1976. 1978.

Download or read book Dynamics of the Transition Zone Between Fresh and Salt Waters in Coastal Aquifers written by A. K. Tyagi and published by . This book was released on 1971 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal and Estuarine Processes written by Peter Nielsen and published by World Scientific Publishing Company. This book was released on 2009-04-21 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers water waves, surf zone hydrodynamics, tides in oceans and estuaries, storm surges, estuarine mixing, basic sediment transport, coastal morphodynamics and coastal groundwater dynamics. It is an introductory treatment, suitable for a first course in coastal and estuarine processes for earth scientists or engineers. Yet, there are substantial amounts of new material that are included, such as the explicit, analytical treatment of transient, forced long waves. Inclusion of this material will in turn strongly enhance the introductory treatment of tsunami, storm surges and surf beat. The treatment of sine wave theory emphasizes expressions which are explicit in the water depth h (using koh instead of kh) so that they can easily be differentiated or integrated with respect to h. This is a major pedagogical advantage because of the enhanced transparency. The treatment of turbulent mixing includes finite mixing length effects which provide an explanation for differential diffusion of different sediment sizes in suspension. The effects of acceleration skewness and boundary layer streaming are also included in the basic sediment transport models. The inclusion of beach groundwater dynamics — including the mechanisms by which waves as well as tides drive groundwater motion — provides a link between the previously unconnected fields of coastal hydraulics and regional groundwater modeling. Serving as a good reference book, it is fully indexed and comprehensively cross referenced. Abundant references to more detailed texts are also provided.

Download or read book Seawater Intrusion in Coastal Aquifers written by Jacob Bear and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal aquifers serve as major sources for freshwater supply in many countries around the world, especially in arid and semi-arid zones. Many coastal areas are also heavily urbanized, a fact that makes the need for freshwater even more acute. Coastal aquifers are highly sensitive to disturbances. Inappropriate management of a coastal aquifer may lead to its destruction as a source for freshwater much earlier than other aquifers which are not connected to the sea. The reason is the threat of seawater intrusion. In many coastal aquifers, intrusion of seawater has become one of the major constraints imposed on groundwater utilization. As sea water intrusion progresses, existing pumping wells, especially those close to the coast, become saline and have to be abandoned. Also, the area above the intruding seawater wedge is lost as a source of natural replenishment to the aquifer. Despite the importance of this subject, so far there does not exist a book that integrates our present knowledge of seawater intrusion, its occurrences, physical mechanism, chemistry, exploration by geo physical and geochemical techniques, conceptual and mathematical modeling, analytical and numerical solution methods, engineering measures of combating seawater intrusion, management strategies, and experience learned from case studies. By presenting this fairly comprehensive volume on the state-of-the-art of knowledge and ex perience on saltwater intrusion, we hoped to transfer this body of knowledge to the geologists, hydrologists, hydraulic engineers, water resources planners, managers, and governmental policy makers, who are engaged in the sustainable development of coastal fresh ground water resources.

Download or read book Hydrodynamics and Sediment Dynamics of Tidal Inlets written by David G. Aubrey and published by Springer. This book was released on 1988-11-28 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Along much of the shoreline of the world, tidal inlets play an important role in nearshore processes, providing links between the coastal oceans and protected embayments. Their study is of particular importance not only for the understanding of fundamental processes in coastal oceanography but also for engineering and the proper management of the delicate equilibrium of our shorelines. This volume, based on the International Symposium on Hydrodynamics and Sediment Dynamics of Tidal Inlets held at Woods Hole, MA, presents the reader with an overview of contemporary research on these important features. The coverage includes: - mathematical modelling, including a review of inlet hydrodynamics, - observations on hydrodynamics, - sedimentology and morphology, - tidal deltas, - processes and policies pertaining to sedimentation, and the - impacts of shore protection and dredging in beaches.

Download or read book Dynamics of Wave tide Interaction with a Coastal Aquifer written by Ling Li and published by . This book was released on 1998 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Submarine Groundwater Discharge Impacts on Coastal Ecosystem by Hidden Water and Dissolved Materials written by Makoto Taniguchi and published by Frontiers Media SA. This book was released on 2021-03-03 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response to Tides of Coastal Aquifers written by John Arthur Williams and published by . This book was released on 1975 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report on the influence of an oscillating water table on storativity or the effective porosity near ʻEwa Beach and in the Honolulu Harbor.

Download or read book Tidal Hydrodynamics written by Bruce B. Parker and published by John Wiley & Sons. This book was released on 1991-09-03 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consists of refereed papers by the world's leading authorities on tidal hydrodynamics. Its forty-four papers, including nine review papers, cover all aspects of the subject and present, for the first time in one place, state of the art treatments of recent advances including tidal detection from satellite altimetry, global tide modeling, nonlinear tidal interactions and internal tidal phenomena.

Download or read book Tidal Dynamics Extreme tidal peaks and coastal flooding written by Fergus J. Wood and published by . This book was released on 2001 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tidal fluctuations and ground water dynamics in atoll island aquifers written by Marc E. Herman and published by . This book was released on 1984 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tidal Propagation and Variable Density Processes in Coastal Aquifers written by Cristina Solorzano Rivas and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal aquifers are an integral source of freshwater supplying an increasing population, especially in coastal communities. Thus, understanding the groundwater dynamics in coastal zones is critical for the effective management of this precious freshwater resource. The study of coastal groundwater has the inherent complexity of the hydraulic connection of groundwater with the ocean. This thesis has selected three main complex processes involved in the fresh groundwater-ocean interaction that are not yet well understood: (1) the effects of dispersion in submarine aquifers caused by the mixing between subsea freshwater and seawater; (2) flow instabilities associated with mixed-convective processes induced by the occurrence of subsea fresh groundwater discharge through high-permeability seafloor sediments; and (3) the effects of tidal forces on groundwater levels in circular islands. -- The first part of this study investigates the effects of dispersion in submarine freshwater distribution. It does so by comparing the Werner and Robinson (2018) analytical solution (i.e., the latest sharp-interface based analytical solution to offshore freshwater extent) with numerical model simulations, adding dispersion parameters. Results show that dispersion affects differently the interface tip position (i.e., where the interface intercepts the top of the aquifer) than it does to the interface toe (i.e., where the interface intercepts the bottom of the aquifer). The changes on the interface tip as well as on the interface width at the top of the aquifer caused by dispersion are dependent on the hydraulic characteristics of the submarine aquitard. This interdependence makes that the tip location and the interface width at the top of the aquifer have a non-monotonic relationship with increasing dispersion. Conversely, the submarine aquitard seems to have little influence at the bottom of the aquifer where both the toe location and the interface width have a monotonic relationship with dispersion, in a similar fashion to what it is observed in onshore aquifers. Additionally, our investigation shows that seawater circulation rates and submarine fresh groundwater rates increase with increasing dispersion, implying that heterogeneity causes larger groundwater fluxes to the ocean. We found that the effects of dispersion, especially in the submarine fresh groundwater discharge, are interrelated with the type of analytical case, showing larger changes in freshwater discharge with increasing dispersion in the analytical case associated with an onshore toe. -- Our attempts to find a correction to the Werner and Robinson (2018) analytical solution to account for dispersion were not successful as a result of the complex interplay between dispersion, aquitard characteristics and the analytical case classification undertaken by the Werner and Robinson (2018) analytical solution. Nevertheless, this study provides insights into the controlling factors that can be considered when seeking dispersive correction coefficients for individual situations, such as individual correction factors for the tip and toe, as well as considering specific analytical cases. -- The second part of this study investigates the subsea fresh groundwater discharge (SFGD) distribution through high-permeability seafloor sediments. Most studies related to predict offshore freshwater extent assume that low-permeability sediments protecting the submarine freshwater from overlying seawater intrusion are in direct contact with the ocean, implicitly assuming that SFGD is uniformly distributed. However, the distribution of SFGD through high-permeability sediments containing seawater is not well understood. This study demonstrates through variable-density and solute transport numerical modelling that mixed-convective processes govern the SFGD distribution through sandy seafloor sediments in the form of unstable buoyant freshwater fingers. Hence, mixed-convective theory, such as the non-dimensional Rayleigh number and mixed convection ratio, may be applied for the prediction of SFGD occurrence through high-permeability seafloor sediments. This investigation demonstrates that the temporality characteristic of unstable flow conditions in the form of permanent buoyant fingers is controlled by the lower boundary. This study is the initial step for further investigation to establish critical non-dimensional numbers to infer the occurrence of SFGD through high-permeability seafloor sediments. -- The final part of this study investigates tidal propagation in circular islands. The aim is to determine the applicability of the widely used Ferris solution to tidal propagation, which is based on the assumption of a straight, infinite shoreline, in circular islands. The investigation is undertaken by comparing an existing analytical solution under radial flow conditions ('circular solution') with the Ferris solution. This comparison allowed us to obtain a correction factor to the Ferris solution to be applied in circular boundaries ('corrected Ferris solution'). The advantage of the corrected Ferris solution over the circular solution is its direct application for the inverse problem of inferring aquifer diffusivity, while the circular solution requires iterative methods. This investigation demonstrates that the corrected Ferris solution and the circular solution predict within 1% and 2.5% of the known diffusivities for confined and unconfined conditions, respectively. This study contributes by extending the available tools to estimate aquifer parameters, especially in circular aquifers, facilitating the determination of properties that otherwise require more invasive methods such as pumping tests.

Download or read book Tidal Dynamics written by Fergus J. Wood and published by . This book was released on 2001 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: