Characterization Of Stream Reaeration Capacity
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Characterization of Stream Reaeration Capacity
Author | : E. C. Tsivoglou,James R. Wallace |
Publsiher | : Unknown |
Total Pages | : 344 |
Release | : 1972 |
Genre | : Stream self-purification |
ISBN | : UOM:39015024442876 |
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Ecological Research Series
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 340 |
Release | : 1972 |
Genre | : Ecology |
ISBN | : OSU:32435020495727 |
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Selected Water Resources Abstracts
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 788 |
Release | : 1974 |
Genre | : Hydrology |
ISBN | : UOM:39015034723059 |
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Water Quality Modelling for Rivers and Streams
Author | : Marcello Benedini,George Tsakiris |
Publsiher | : Springer Science & Business Media |
Total Pages | : 292 |
Release | : 2013-02-11 |
Genre | : Science |
ISBN | : 9789400755093 |
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The main objective of the Water Framework Directive in the European countries is to achieve a “good status” of all the water bodies, in the integrated management of river basins. In order to assess the impact of improvement measures, water quality models are necessary. During the previous decades the progress in computer technology and computational methods has supported the development of advanced mathematical models for pollutant transport in rivers and streams. This book is intended to provide the fundamental knowledge needed for a deeper understanding of these models and the development of new ones, which will fulfil future quality requirements in water resources management. This book focuses on the fundamentals of computational techniques required in water quality modelling. Advection, dispersion and concentrated sources or sinks of contaminants lead to the formulation of the fundamental differential equation of pollutant transport. Its integration, according to appropriate initial and boundary conditions and with the knowledge of the velocity field, allows for pollutant behaviour to be assessed in the entire water body. An analytical integration is convenient only in one-dimensional approach with considerable simplification. Integration in the numerical field is useful for taking into account particular aspects of water body and pollutants. To ensure their reliability, the models require accurate calibration and validation, based on proper data, taken from direct measurements. In addition, sensitivity and uncertainty analysis are also of utmost importance. All the above items are discussed in detail in the 21 chapters of the book, which is written in a didactic form for professionals and students.
Selected Water Resources Abstracts
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 1282 |
Release | : 1974 |
Genre | : Water |
ISBN | : PSU:000068688318 |
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Gas Transfer at Water Surfaces
Author | : W. Brutsaert,G.H. Jirka |
Publsiher | : Springer Science & Business Media |
Total Pages | : 615 |
Release | : 2013-04-17 |
Genre | : Science |
ISBN | : 9789401716604 |
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The transfer across the surface of environmental waters is of interest as an important phase in the geophysical and natural biochemical cycles of numer ous substances; indeed it governs the transition, one way or the other, be tween the dissolved state in the water and the gaseous state in the atmo sphere. Especially with increasing population and industrialization, gas transfer at water surfaces has become a critical factor in the understanding of the various pathways of wastes in the environment and of their engineering management. This interfacial mass transfer is, by its very nature, highly complex. The air and the water are usually in turbulent motion, and the interface be tween them is irregular, and disturbed by waves, sometimes accompanied by breaking, spray and bubble formation. Thus the transfer involves a wide variety of physical phenomena occurring over a wide range of scales. As a consequence, scientists and engineers from diverse disciplines and problem areas, have approached the problem, often with greatly differing analytical and experimental techniques and methodologies.
The Enhanced Stream Water Quality Models QUAL2E and QUAL2E UNCAS
Author | : Linfield C. Brown,Thomas O. Barnwell |
Publsiher | : Unknown |
Total Pages | : 204 |
Release | : 1987 |
Genre | : Water quality |
ISBN | : UCR:31210025017417 |
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Developments in Environmental Modelling
Author | : S.E. Jorgensen,M.J. Gromiec |
Publsiher | : Elsevier |
Total Pages | : 409 |
Release | : 2016-04-20 |
Genre | : Science |
ISBN | : 9781483290805 |
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The use of models to assess water quality is becoming increasingly important worldwide. In order to be able to develop a good model, it is necessary to have a good quantitative and ecological description of physical, chemical and biological processes in ecosystems. Such descriptions may be called ``submodels''. This book presents the most important, but not all, submodels applied in water quality modelling. Each chapter deals with a specific physical process and covers its importance, the most applicable submodels (and how to select one), parameter values and their determination, and future research needs.The book will be an excellent reference source for environmental engineers, ecological modellers and all those interested in the modelling of water quality systems.