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A Mathematical Model For The Prediction Of Unsteady Salinity Intrusion In Estuaries
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Book Synopsis A Mathematical Model for the Prediction of Unsteady Salinity Intrusion in Estuaries by : M. Llewellyn Thatcher
Download or read book A Mathematical Model for the Prediction of Unsteady Salinity Intrusion in Estuaries written by M. Llewellyn Thatcher and published by . This book was released on 1972 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The salinity structure of a tidal estuary fed by upstream fresh water sources is an important factor of water quality. In addition, this structure is intimately related to the circulation of the estuary because of density currents induced by the salt-fresh water relation. Previous investigations in two and three dimensions have been limited to extremely simplified geometrical and steady-state assumptions. One dimensional studies have considered the variable area case, but have been limited to descriptive rather than predictive methods because of the difficulty of handling the downstream boundary condition for the one-dimensional salt balance equation and because of the necessity to specify a longitudinal dispersion coefficient based on field data for the estuary being studied. This study presents a predictive numerical model of unsteady salinity intrusion in estuaries by formulating the problem in finite-difference terms using the one-dimensional, tidal time, variable area equations for the conservation of water mass, conservation of momentum and conservation of salt. Tidal time means a time scale of calculation larger than that defining turbulence, but much smaller than a tidal period in order to correctly represent the tidal advection within a tidal period. The tidal dynamic equations are coupled to the conservation of salt equation through a salinity-density relationship, and the ocean boundary condition for salt is formulated in a manner which depends on the direction of flow at the entrance to the estuary. The longitudinal dispersion coefficient has been shown to be proportional to the magnitude of the local, time-varying longitudinal salinity gradient, and this constant of proportionality has been shown to depend on a dimensionless parameter which expresses the degree of vertical stratification of the estuary. This relationship has been established for a wide range of stratification conditions. The mathematical model has been verified using data from the Waterways Experiment Station salinity flume and field data from the Delaware, the Potomac, and the Hudson. By specifying initial conditions, fresh water hydrographs, and tidal elevations at the ocean, it is possible to predict the time-varying salinity using this model.
Book Synopsis Prediction of Unsteady Salinity Intrusion in Estuaries by : M. Llewellyn Thatcher
Download or read book Prediction of Unsteady Salinity Intrusion in Estuaries written by M. Llewellyn Thatcher and published by . This book was released on 1972 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword: This report is intended as a documentation of the computer program and as a user's manual for the implementation of the mathematical model for the prediction of unsteady salinity intrusion in estuaries. The details of the model development and verification are contained in the following report: "A Mathematical Model for the Prediction of Unsteady Salinity Intrusion in Estuaries" by M. Llewellyn Thatcher and Donald R.F. Harleman, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Technical Report No. 144, February 1972 also published by M.I.T. Sea Grant Project Office as Report No. MITSG 72-7 (index No. 72-307-Ccb)]. The unsteady salinity intrusion model is one-dimensional, although varying degrees of stratification are accounted for in the assumed longitudinal dispersion relationship. This model is a component in two additional studies, one of which is concerned with the two-dimensional aspects of salinity intrusion (i.e. vertical salinity and velocity distributions in estuaries): "Mathematical Simulation of Tidal Time-Averages of Salinity and Velocity Profiles in Estuaries" by John S. Fisher, John D. Ditmars and Arthur T. Ippen, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Technical Report No. 151, July 1972 [also published by M.I.T. Sea Grant Project Office as Report No. MITSG 72-11 (index No. 72-311-Ccb)] The second study is concerned with the development of a model for predicting the transient longitudinal distribution of water quality parameters in estuaries: "Numerical Model for the Prediction of Transient Water Quality in Estuary Networks" by James E. Dailey and Donald R.F. Harleman, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Technical Report No. 158, October 1972 [also published by M.I.T. Sea Grant Project Office as Report No. MITSG 72-15 (index No. 72-315-Ccb)] This user's manual therefore assists in the implementation of the analytical and numerical models listed above.
Book Synopsis Unsteady Salinity Intrusion in Estuaries by : Donald R. F. Harleman
Download or read book Unsteady Salinity Intrusion in Estuaries written by Donald R. F. Harleman and published by . This book was released on 1974 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mathematical Modelling of Estuarine Physics by : Jürgen Sündermann
Download or read book Mathematical Modelling of Estuarine Physics written by Jürgen Sündermann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Honor of Prof. Walter Hansen on Occasion of his 7o. Birthday
Book Synopsis Committee on Tidal Hydraulics Report by :
Download or read book Committee on Tidal Hydraulics Report written by and published by . This book was released on 1968 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Salt-front Movement in the Hudson River Estuary, New York by : M. Peter De Vries
Download or read book Salt-front Movement in the Hudson River Estuary, New York written by M. Peter De Vries and published by . This book was released on 2001 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Bulletin written by and published by . This book was released on 1954 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Salt Intrusion, Tides and Mixing in Multi-Channel Estuaries by : Anh Duc Nguyen
Download or read book Salt Intrusion, Tides and Mixing in Multi-Channel Estuaries written by Anh Duc Nguyen and published by CRC Press. This book was released on 2008-11-01 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-channel estuaries, such as the Mekong Delta in Vietnam and the Scheldt in the Netherlands, have characteristics of both the river and the sea, forming an environment influenced by tidal movements of the sea and freshwater flow of the river. This study discusses a predictive analytical approach for salinity intrusion and discharge estimate in multi-channel estuaries. The new approach agrees with 1-D hydrodynamic models and observations, indicating its applicability in practice. It has successfully developed a new theory and a new equation to quantify tidal pumping due to ebb-flood channel residual circulation and the related salt dispersion.
Book Synopsis Estuarine Research in the 1980s by : C. Lavett Smith
Download or read book Estuarine Research in the 1980s written by C. Lavett Smith and published by SUNY Press. This book was released on 1992-01-01 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume presents a selection of estuarine research studies that have been conducted on the Hudson ecosystem, mostly since 1980. The 25 papers are grouped into five sections: physical and chemical ecology; fishery biology; fisheries methods; estuarine ecology; and a summary, Paper edition (unseen), $24.95. Annotation copyrighted by Book News, Inc., Portland, OR
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1975 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Time-dependent, Two-dimensional Mathematical Model for Simulating the Hydraulic, Thermal, and Water Quality Characteristics in Shallow Water Bodies by : Moshe Siman-Tov
Download or read book A Time-dependent, Two-dimensional Mathematical Model for Simulating the Hydraulic, Thermal, and Water Quality Characteristics in Shallow Water Bodies written by Moshe Siman-Tov and published by . This book was released on 1974 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water-resources Investigations Report by :
Download or read book Water-resources Investigations Report written by and published by . This book was released on 2001 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estuarine Research written by and published by . This book was released on 1978 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis EPA Environmental Modeling Catalogue by : Systems Architects
Download or read book EPA Environmental Modeling Catalogue written by Systems Architects and published by . This book was released on 1979 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Research Series written by and published by . This book was released on 1977 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Quality Modeling by : Wu-Seng Lung
Download or read book Water Quality Modeling written by Wu-Seng Lung and published by CRC Press. This book was released on 2021-06-24 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume to discussing the various aspects of estuarine water quality modeling. Topics considered include fundamental principles, estuarine mass transport, BOD/DO and eutrophication model kinetics, kinetics on toxicants, and sediment-water interactions. The book also discusses mixing zone modeling and how to integrate estuarine hydrodynamic and water quality models. Many case studies demonstrating successful model applications are discussed.
Book Synopsis Advances in Hydroscience by : Ben Chie Yen
Download or read book Advances in Hydroscience written by Ben Chie Yen and published by Elsevier. This book was released on 2013-10-22 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Hydroscience, Volume 14-1986 covers topics on the frontiers of hydroscience, including urban hydrology, remote sensing, sewer hydraulics, and computational hydraulics. The book presents articles on state-of-the-art theory and practice in sewer hydraulics and the passive microwave remote sensing of soil moisture. An article on the numerical modeling of unsteady open-channel flow is also encompassed. Hydraulic engineers, hydrologists, earth scientists, agricultural engineers, soil scientists, environmental engineers, and urban designers and planners will find the text invaluable.
