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Books > Earth & environment > Earth sciences > The hydrosphere
Discussing all aspects of offshore surveying in a single volume, this book provides all algorithms necessary to develop complete software suites, and gives a large number of quality control criteria. It is invaluable to professional surveyors, offshore engineers and geophysicists, providing them with a wealth of data in a single volume. It is also a valuable reference work for hydrographic surveyors, seismic navigators and operations geophysicists. This book brings together information on spheroids, datums, projections and binning; gives a complete listing of UKOOA P1/90 and P2/91 formats for data transfer; a field guide to the calibration of radio navigation systems and compasses, acoustic and laser measuring devices; GPS, including calibration, use and differential techniques; field manual for quality control of all aspects of offshore surveying; listing of typical specifications for inclusion in survey contracts; and a comprehensive glossary of relevant terms for offshore surveying.
At a time when the polar regions are undergoing rapid and unprecedented change, understanding exchanges of momentum, heat and salt at the ice-ocean interface is critical for realistically predicting the future state of sea ice. By offering a measurement platform largely unaffected by surface waves, drifting sea ice provides a unique laboratory for studying aspects of geophysical boundary layer flows that are extremely difficult to measure elsewhere. This book draws on both extensive observations and theoretical principles to develop a concise description of the impact of stress, rotation, and buoyancy on the turbulence scales that control exchanges between the atmosphere and underlying ocean when sea ice is present. Several interesting and unique observational data sets are used to illustrate different aspects of ice-ocean interaction ranging from the impact of salt on melting in the Greenland Sea marginal ice zone, to how nonlinearities in the equation of state for seawater affect mixing in the Weddell Sea. The booka (TM)s content, developed from a series of lectures, may be appropriate additional material for upper-level undergraduates and first-year graduate students studying the geophysics of sea ice and planetary boundary layers.
Shear waves and closely related interface waves (Rayleigh, Stoneley and Scholte) play an important role in many areas of engineering, geophysics and underwater acoustics. In some cases interest is focused on large-amplitude waves of low frequency such as those associ ated with earthquakes and nuclear explosions; in other cases low amplitude waves, which have often travelled great distances through the sediment, are of interest. Both low and high frequency shear and interface waves are often used for seafloor probing and sediment characterization. As a result of the wide spectrum of different interests, different disciplines have developed lines of research and a literature particularly suited to their own problems. For example water-column acousticians view the seafloor sediment as the lower boundary of their domain and are interested in shear and interface waves in the near bottom sediments mainly from the standpoint of how they influence absorption and reflection at this boundary. On the other hand, geophysicists seeking deep oil deposits are interested in the maximum penetration into the sediments and the tell-tale characteristics of the seismic waves that have encountered potential oil or gas bearing strata. In another area, geotechnical engineers use shear and interface waves to study soil properties necessary for the design and the siting of seafloor structures.
Water is vital to life, maintenance of ecological balance, economic development, and sustenance of civilization. Planning and management of water resources and its optimal use are a matter of urgency for most countries of the world, and even more so for India with a huge population. Growing population and expanding economic activities exert increasing demands on water for varied needs--domestic, industrial, agricultural, power generation, navigation, recreation, etc. In India, agriculture is the highest user of water. The past three decades have witnessed numerous advances as well as have presented intriguing challenges and exciting opportunities in hydrology and water resources. Compounding them has been the growing environmental consciousness. Nowhere are these challenges more apparent than in India. As we approach the twenty first century, it is entirely fitting to take stock of what has been accomplished and what remains to be accomplished, and what accomplishments are relevant, with particular reference to Indian conditions."
This book is an original and novel contribution to flood hazard
assessment, climate change and land use change and is intended to
serve both as an effective source of information and a valuable
basis for priority setting and further technical, financial and
political decisions regarding flood hazard assessment. The study
area is located on the floodplain of the Ubaye River in the
Barcelonnette area, part of the Alpes de Haute Provence in
southeast France. The book offers a comparative overview of the
major challenges faced when dealing with flood hazards. The
research presented is intended to promote a deeper understanding of
how climate change and land use change processes have evolved from
past to present, and how they affect the flow regime of the Ubaye
River based on sound and reproducible scientific arguments. The
methodology implemented ranges from remote sensing interpretation
to hydrodynamic modeling and includes the application of spatial
and statistical modeling. The results of this research provide
essential information for policymaking, decision-making support and
flood hazard planning in the Barcelonnette area.
This is a compilation of manuscripts on mineral and thermal waters
of different areas of the world.
Numerical Methods for Atmospheric and Oceanic Sciences caters to the needs of students of atmospheric and oceanic sciences in senior undergraduate and graduate courses as well as students of applied mathematics, mechanical and aerospace engineering. The book covers fundamental theoretical aspects of the various numerical methods that will help both students and teachers in gaining a better understanding of the effectiveness and rigour of these methods. Extensive applications of the finite difference methods used in the processes involving advection, barotropic, shallow water, baroclinic, oscillation and decay are covered in detail. Special emphasis is given to advanced numerical methods such as Semi-Lagrangian, Spectral, Finite Element and Finite Volume methods. Each chapter includes various exercises including Python codes that will enable students to develop the codes and compare the numerical solutions obtained through different numerical methods.
Urban population growth dramatically alters material and energy fluxes in the affected areas, with concomitant changes in landscape, altered fluxes of water, sediment, chemicals and pathogens and increased releases of waste heat. These changes then impact on urban ecosystems, including water resources and result in their degradation. Such circumstances make the provision of water services to urban populations even more challenging. Changing weather patterns, rising temperature and large variations in precipitation contr- ute to increased damages, caused by weather related disasters, including floods. Ones of the major contributors to increasing flood peaks are land use changes and particularl- urban development. Consequently, there is a need to look for low environmental impact land development and to manage runoff in urban areas by storm water management. Much progress in the management of urban waters has been achieved in the most - vanced jurisdictions, but much more remains to be done. In this respect the EC Water Framework Directive can provide some guidance. Urban water management issues are particularly important in the countries in transition in Central and Eastern Europe. During the last decade political, economical and social changes in the countries under transition have influenced almost every element of the public sector, including water services. There is an urgent need for exchange of information among various countries on this issue and for identification of best approaches to achieving this transition.
The U.S. Ocean Commission Report identified the need for regional ecosystem assessments to support coastal and ocean management. These assessments must provide greater understanding of physical and biological dynamics than assessments at global and national scales can provide but transcend state and local interests. This need and timeliness is apparent for Long Island Sound, where a multi-state regional restoration program is underway for America s most urbanized estuary. Synthesis of the Long Island Sound ecosystem is needed to integrate knowledge across disciplines and provide insight into understanding and managing pressing issues, such as non-point sources of pollution, coastal development, global climatic change, and invasive species. Currently, there is a need for a comprehensive volume that summarizes the ecological and environmental dynamics and status of Long Island Sound and its myriad ecosystems. It has been 30 years since a comprehensive summary of Long Island Sound was prepared and 50 years since the pioneering work of Gordon Riley. Major advances in estuarine science are providing new insights into these systems, and yet, the condition of many estuaries is in decline in the face of continuing coastal development. There is an opportunity to lay a foundation for integrative coastal observing systems that truly provide the foundation for improved decision-making. This book will provide a key reference of our scientific understanding for work performed over the past three decades and guide future research and monitoring in a dynamic urbanized estuary. "
This volume presents a collection of original, multidisciplinary papers written by leading scientists from the various countries of the Pacific rim. The major topics covered are the origins of life in the marine environment; the changing distribution of biological parameters; hydrophysical and hydrochemical processes; and the exploitation of ocean resources and the ensuing consequences. The material is divided into five parts. The Introduction (Part I) gives a comprehensive overview of the research activities of the IOC and related organisations. The following four parts of the book comprise a number of survey papers which deal with specific aspects of marine science in the Pacific Ocean. For researchers and decision makers interested in marine and environmental science with an emphasis on the Pacific Ocean.
The Black Sea ecosystem is a unique marine environment. Its isolation from the ocean and large catchment basin, covering industrial and rural parts of the European and Asian continents, render the Black Sea ecosystem extremely vulnerable to the imposed environmental burdens Complex scientific problems related to the recent evolution of the Black Sea ecosystem were tackled in the framework of the NATO TU BLACK SEA project Ecosystem modelling as a management tool for the Black Sea', implemented between 1993 and 1997. The primary results and the products of the TU BLACK SEA project were presented to the scientific community at a dedicated symposium held on 15-19 June, 1997 at Zori Rossii on the Crimean coast of the Black Sea. The present two volumes contain 47 of the papers presented at the symposium, selected by peer review. Volume I contains 27 papers in all, two on the NATO TU Black SEA database and database management system, eight on the Black Sea biogeochemistry, and 17 on the biological structure of the basin. Of the 20 papers appearing in Volume II, nine are physical processes and 11 are on the modelling of the circulation and the ecosystems of the Black Sea.
A journey through time and around the world to uncover water's true nature, and how it can help us adapt to climate change. Trouble with water – increasingly frequent, extreme floods and droughts – is one of the first obvious signs of climate change. Meanwhile, urban sprawl, industrial agriculture and engineered water infrastructure are making things worse. As our control attempts fail, we are forced to recognize an eternal truth: sooner or later, water always wins. Award-winning science journalist Erica Gies follows water 'detectives' as they search for clues to water's past and present. Their tools: cutting-edge science and research into historical ecology, animal life, and earlier human practices. Their discoveries: a deeper understanding of what water wants and how accommodating nature can protect us and other species. Modern civilizations tend to speed water away. We have forgotten that it must flex with the rhythms of the earth, and that only collaboration with nature will allow us to forge a more resilient future.
In the past two decades several activities in the field of water resources management have been enhanced and intensified. This . rise had at least two independent reasons. The first and main one was the constantly increasing water demand for agriculture and industry on one side and the concern about the deteriorating environment on the other. While this last concern was lately overshadowed by deterioration of national economies, the quantity of available water resources has certainly not increased with the growing scarcity of funds for its development and protection. Furthermore, the standard of living, which raised across the world, even in India and China, countries which concentrate more than a third of the world population, has made people and their governments more aware of natural disasters caused by weather. Since a large percentage of losses in human life and material damage from weather-related disasters are caused by water, either by its excess or scarcity, the concern about water has been increasingly associated with these disasters. The second reason for intensified water resources management is man's spectacular technological advance in electronics, computers and use of satellites. The Koran says that two things cannot be predicted: the sex of the child in its mother's womb and the quantity of water that falls from the sky and flows in rivers. Technological progress has disproved both of these caveats.
Riverbank Filtration (RBF) has gained popularity in the past decade as an excellent source of high quality water for public water supply. This text compliments the existing literature on RBF water quality, and provides much-need guidance in the design and operation of RBF facilities. RBF has proven effective in many hydrogeological settings worldwide, and can be an excellent solution to water supply problems in both developed and developing countries. Topics covered include surface stream hydrology, particle clogging, and biological/geochemical processes. Data and case histories are provided from dozens of installations, providing much-needed practical information regarding RBF design, operation, and performance. This book provides the necessary tools to evaluate potential RBF sites, and is a must-have if you are considering RBF as a source of water supply.
Global climate change is expected to have major impacts on water resources and aquatic ecosystems. This prospect presents planners, who are already struggling to meet the demands of growing populations and economies, with new challenges. This volume examines these challenges and the resulting conceptual issues for water planning and project evaluation practices. The book is the first attempt to consider whether and how water resources, planning principles and evaluation criteria should be altered in view of the potential impacts of anthropogenically induced climate change. The principles and procedures that are in use today along with new approaches to nonstructural flood plain management, watershed management, water markets, and wetland banking will serve as the basis for the policies and strategies that deal with climate variability and anticipated change. This collection of papers reviews what water management ideas work, which ones need to be changed, and how planners and managers should begin incorporating aspects of risk and uncertainty into management decisions to deal expertly with climate change.
Waves in the Ocean and Atmosphere presents a study of the fundamental theory of waves appropriate for first year graduate students in oceanography, meteorology and associated sciences. Starting with an elementary overview of the basic wave concept, specific wave phenomena are then examined, including: surface gravity waves, internal gravity waves, lee waves, waves in the presence of rotation, geostrophic adjustment, quasi-geostrophic waves and potential vorticity, wave-mean flow interaction and unstable waves. Each wave topic is used to introduce either a new technique or concept in general wave theory. Emphasis is placed on connectivity between the various subjects and on the physical interpretation of the mathematical results. The book contains numerous exercises at the end of the respective chapters.
Environmental Hydrology presents a unified approach to the role of hydrology in environmental planning and management, emphasizing the consideration of the hydrological continuum in determining the fate and migration of chemicals as well as micro-organisms in the environment, both below the ground as well as on it. The eco-hydrological consequences of environmental management are also discussed, and an up-to-date account of the mathematical modeling of pollution is also presented. Audience: Invaluable reading for senior undergraduates and beginning graduates, civil, environmental, and agricultural engineers, and geologists and climatologists.
Water scarcity is increasing all over the world because of
growing population and increasing demands. Countries with limited
water resources are urgently in need for a new approach towards
water management by shifting from the "use and dispose" approach to
the "use, treat and reuse" approach. This book proposes a framework
for the sustainable management of scarce water resources. The
approach is based on the application of Cleaner Production thinking
to water management.
Groundwater Contamination in Coastal Aquifers: Assessment and Management first describes groundwater contamination in coastal aquifers and then delves into specific topics surrounding various hydrogeochemical processes. Next, the book covers case studies of groundwater quality assessment using recent techniques, explains the various pollutants and contaminants in coastal aquifers, and covers management and remediation methods to control contamination in coastal aquifers. This key reference encompasses various topics in broader perspectives on groundwater contamination in coastal aquifers, providing a significant contribution to the field of hydrogeology.
Concentrations of dissolved organic matter (DOM) in lakes are often an order of magnitude greater than concentrations of particulate organic matter; nevertheless, the biogeochemical analysis of DOM is described in only a few textbooks on limnology (most thoroughly by Wetzel). The orgins of dissolved organic substances are largely photosynthetic; DOM is either autochthonously synthesized by littoral and pelagic flora through secretions and autolysis of cellular contents, or allochthonously generated in terrestrial systems of the drainage basin, composing largely of humic substances refractory to rapid microbial degradation. The role of DOM in lacustrine ecosystems, as energy source and system regulator, however, is still poorly known. The aim of this book is: (1) to present state-of-the-art reviews of the role of dissolved autochthonous and allochthonous organic matter in pelagial and littoral zones; and (2) to focus attention on poorly understood but critical topics and hence to provide direction for future research activity.
This study presents an systematic approach to water quality assessment, hybrid modelling and decision support for eutrophication management in deep reservoirs. It is found that during the summer monsoon the catchment runoff into the Yongdam reservoir induces a trandsfer of pollutants from a middle stratified layer to the surface layer. Although the transport mechanism limits nutrient accumulation on the bottom of the reservoir, it also offers an opportunity for on-going algae production in the surface water. Physically based modelling is used to understand the process of micro-scale turbulent mixing and its impact on the nutrient uptake by algae. Further, a data-driven model using clustering and partial least squares regression which uses results from a physically based model of the reservoir successfully predicts Chlorophyll-a concentrations.
Now and in the future, the ever-growing demand for drinking water will lead many cities to implement indirect water reuse programs, where wastewater effluent becomes part of the drinking water sources. Pollution of those sources with emerging contaminants (micropollutants) such as endocrine disrupting compounds, pharmaceutically active compounds, pesticides and personal care products is a fact known worldwide. In this thesis, nanofiltration (NF) and reverse osmosis (RO) are demonstrated to be appropriate technologies for removing a large number of micropollutants; however, the performance of NF and RO can be questioned because there are limited tools that optimise quantification of the removal of contaminants. Therefore, in this thesis, by means of the use of multivariate data analysis techniques, removal quantification is effectively determined and more understanding of the separation of micropollutants by membranes is achieved. |
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