Sustainable technologies for water supply are urgently needed if water has to be supplied to billions of less fortunate people with inadequate access to water. These technologies must be simple, less expensive, less energy intensive, and easy to maintain for their adaptation among the poor masses. Four appropriate technologies are discussed here: solar pasteurization, membrane desalination, natural filtration (riverbank filtration), and solar distillation. Solar pasteurization can be a useful means of producing water at remote, but sunny locations where fuel may not be easily available for boiling water. Membrane desalination will remain as a viable means of drinking water production for individual households to large communities. Various membrane filtration techniques as well as the means to "democratize" membrane filtration have been presented. Riverbank filtration is a "natural" filtration technique where drinking water is produced by placing wells on the banks of rivers. The riverbed/bank material and the underlying aquifer act as natural filters to remove pollutants from river water. Solar distillation can be a viable method of drinking water production for individual households to small communities without the input of external energy. Sustainability framework and technology transfer are discussed through transdisciplinary analysis.

Gelande- und Kartierarbeiten stellen die wichtigsten Grundlagen fur die Bearbeitung hydrogeologischer Fragestellungen dar. Hierbei sind alle im Gelande und beim Kartieren beobachteten Details und deren Deutung im Hinblick auf das Grundwasser und die hydrogeologischen Prozesse zu dokumentieren, um sie als Basis spaterer Aussagen, etwa in Gutachten, Berichten und Veroeffentlichungen, zu nutzen. Der Inhalt dieses Buches basiert auf den Kenntnissen von Wilhelm Coldewey im Bereich der Consulting-Tatigkeit, der hydrogeologischen Kartierung und der Kartenerstellung. Insbesondere sind seine Erfahrungen eingeflossen, die er bei der Erstellung des Hydrologischen Kartenwerkes des Rheinisch-Westfalischen Steinkohlenbezirksgewonnen hat. Patricia Goebel bringt ihre umfangreichen Erfahrungen aus den Bereichen der Gelande- und Laboruntersuchungen im Rahmen der studentischen Ausbildung und der Erwachsenen-Weiterbildung ein. Das Buch stellt eine Einfuhrung fur Studierende der Geowissenschaften und der Hydrologie und eine Vertiefung fur Fachleute der Geowissenschaften und der Wasserversorgung dar. Bei der Abfassung der Texte und der Gestaltung der Abbildungen haben die Autoren darauf geachtet, auch fur fachfremde Leser verstandlich zu schreiben. Bei den verschiedenen Messverfahren beschreiben sie bewusst auch einfache Methoden, welche die Kosten fur die Gelandeuntersuchungen gering halten und Messungen auch unter einfachsten Bedingungen, z.B. in Entwicklungslandern, ermoeglichen. >>>>>>>

by K. Lambeck, R. Sabadini and E. B08Chi Viscosity is one of the important material properties of the Earth, controlling tectonic and dynamic processes such as mantle convection, isostasy, and glacial rebound. Yet it remains a poorly resolved parameter and basic questions such as whether the planet's response to loading is linear or non-linear, or what are its depth and lateral variations remain uncertain. Part of the answer to such questions lies in laboratory observations of the rheology of terrestrial materials. But the extrapolation of such measurements from the laboratory environment to the geological environment is a hazardous and vexing undertaking, for neither the time scales nor the strain rates characterizing the geological processes can be reproduced in the laboratory. General rules for this extrapolation are that if deformation is observed in the laboratory at a particular temperature, deformation in geological environments will occur at a much reduced temperature, and that if at laboratory strain rates a particular deformation mechanism dominates over all others, the relative importance of possible mechanisms may be quite different at the geologically encountered strain rates. Hence experimental results are little more than guidelines as to how the Earth may respond to forces on long time scales.

Outstanding advances have been achieved on Earthquake Geotechnical Engineering and Microzonation in the last decade mostly due to the increase in the recorded instrumental in-situ data and large number of case studies conducted in analyzing the observed effects during the recent major earthquakes. During the 15th International Conference on Soil Mechanics and Geotechnical Engineering held in Istanbul in August 2001, the Technical Committee of Earthquake Geotechnical Engineering, (TC4) of the International Society of Soil Mechanics and Geotechnical Engineering organised a regional seminar on Geotechnical Earthquake Engineering and Microzonation where an effort has been made to present the recent advances in the field by eminent scientists and researchers. The book idea was first suggested by the participants of this seminar. The purpose of this book as well as of the seminar was to present the broad spectrum of earthquake geotechnical engineering and seismic microzonation including strong ground motion, site characterisation, site effects, liquefaction, seismic microzonation, solid waste landfills and foundation engineering. The subject matter requires multidisciplinary input from different fields of engineering seismology, soil dynamics, geotechnical and structural engineering. The chapters in this book are prepared by some of the distinguished lecturers who took part in the seminar supplemented with contributions of few distinguished experts in the field of earthquake geotechnical engineering. The editor would like to express his gratitude to all authors for their interest and efforts in preparing their manuscripts. Without their enthusiasm and support, it would not have been possible to complete this book.

Desertification and land degradation are complex phenomena, and we need to understand their causes, consequences, and means to mitigate and combat their impact. Therefore, this book aims to explain the concept and characteristics of drylands, desert and desertification, land degradation, wastelands, and the concept of ecosystem services. It also discusses various types of processes of land degradations, their characteristics, physics and indicators along with mapping, monitoring and assessment of methods involved. Concept of Ocean Biological Deserts is discussed along with international and regional efforts towards combating land degradation and desertification. Key Features: * Provides all the aspect of desertification and land degradation at one place * Includes comprehensive methods to monitor different desertification/land degradation processes * Comprehensive overview of the mapping, monitoring and modelling techniques * Role of space borne data in identifying, monitoring and combating desertification is evaluated and reported with real case studies * Explains the concept of ocean biological deserts, their characteristics and mapping

Any numerical subsurface model is comprised of three components: a theoretical basis to translate our understanding phenomena into partial differential equations and boundary conditions, a numerical method to approximate these governing equations and implement the boundary conditions, and a computer implementation to generate a generic code for research as well as for practical applications. Computational Subsurface Hydrology: Reactions, Transport, and Fate is organized around these themes. The fundamental processes occurring in subsurface media are rigorously integrated into governing equations using the Reynolds transport theorem and interactions of these processes with the surrounding media are sophisticatedly cast into various types of boundary conditions using physical reasoning. A variety of numerical methods to deal with reactive chemical transport are covered in Computational Subsurface Hydrology: Reactions, Transport, and Fate with a particular emphasis on the adaptive local grid refinement and peak capture using the Lagrangian-Eulerian approach. The topics on coupled fluid flows and reactive chemical transport are unique contributions of this book. They serve as a reference for research as well as for practical applications with a computer code that can be purchased from the author. Four computer codes to simulate vertically integrated horizontal solute transport (LEMA), contaminant transport in moving phreatic aquifers in three dimensions (3DLEMA), solute transport in variably saturated flows in two dimensions (LEWASTE), and solute transport under variably saturated flows in three dimensions (3DLEWASTE) are covered. These four computer codes are designed for generic applications to both research and practical problems. They could be used to simulate most of the practical, real-world field problems. Reactive chemical transport and its coupling with fluid flows are unique features in this book. Theories, numerical implementations, and example problems of coupled reactive transport and flows in variably saturated media are presented. A generic computer code, HYDROGEOCHEM 3.0, is developed. A total of eight example problems are used to illustrate the application of the computational model. These problems are intended to serve as examples for setting up a variety of simulations that one may encounter in research and field-site applications. Computational Subsurface Hydrology: Reactions, Transport, and Fate offers practicing engineers and scientists a theoretical background, numerical methods, and computer codes for modeling contaminant transport in subsurface media. It also serves as a textbook for senior and graduate course on reactive chemical transport in subsurface media in disciplines such as civil and environmental engineering, agricultural engineering, geosciences, soil sciences, and chemical engineering. Computational Subsurface Hydrology: Reactions, Transport, and Fate presents a systematic derivation of governing equations and boundary conditions of subsurface contaminant transport as well as reaction-based geochemical and biochemical processes. It discusses a variety of numerical methods for moving sharp-front problems, expounds detail procedures of constructing Lagrangian-Eulerian finite element methods, and describes precise implementation of computer codes as they are applied to subsurface contaminant transport and biogeochemical reactions.

This five-year project started on 25th September 1986. Eventually, sixteen countries and the European Commission itself signed the Memorandum of Understanding. The principal objectives of the Project were to further the establishment of national operational weather radar networks, harmonise operations, data handling and processing to minimise the difficulties of, and maximise the benefits of international weather radar data exchange. To transmit the data efficiently, standardised formats and protocols were essential. These were formulated by a working group whose efforts were rewarded when WMO accepted their proposal for worldwide use. A multi-national pilot project area was established and streams of data from each of the countries involved were merged and integrated with data from the satellite METEOSAT. The composite image, known as the COST image' was regularly distributed via the global telecommunication system of WMO, the public telephone switched network and the Olympus satellite. The utility of the COST image was assessed for, inter alia, short-period forecasting, aviation flight assistance, maritime forecasting and the initialisation of numerical weather prediction models. In all cases, the COST image was found to be beneficial. A report containing proposed curricula for the training of meteorologists, hydrologists and other major users of weather radar data was sent to WMO for possible adoption as one of their standard training manuals. As a report of international scientific cooperation, this is a success story. All the principal objectives of the Memorandum of Understanding were achieved both within time and budget. It is a tale of international cooperation at its best.

This volume describes important sites in the Pleistocene deposits of the Thames terrace system laid down by the Thames and its tributaries. It correlates the Thames sequence with deposits found elsewhere in Britain, on the European continent and on the ocean floor.

International Weather Radar Networking covers all aspects of the subject in a collection of contributions drawn from all over the world. Of particular interest are the papers describing work in Eastern Europe and papers reviewing of the achievements of the Commission of the European Communities COST-73 project. During the last twenty years there has been a rapid growth in the number of digital radars deployed for operational use in Western Europe. There are now around 100, of which about half have a Doppler capability, providing wind as well as reflectivity information. The international exchange of the data from these systems promises a great enhancement of the benefits to weather forecasting and commercial users. This volume reports work being undertaken to realize those benefits and points the way to future developments of radar technology.

An integrated approach to environmental data management is necessitated by the complexity of the environmental problems that need to be addresses, coupled with the interdisciplinary approach that needs to be adopted to solve them. Agenda 21 of the Rio Environmental Conference mandated international programmes and organizations to take steps to develop common data and information management plans, and steps have been taken in this direction. The key word that defines the framework of the present book is `integration'. The book establishes the basics of integrated approaches and covers environmental data management systems within that framework, covering all aspects of data management, from objectives and constraints, design of data collection networks, statistical and physical sampling, remote sensing and GIS, databases, reliability of data, data analysis, and the transformation of data into information.

Stochastic hydrology is an essential base of water resources systems analysis, due to the inherent randomness of the input, and consequently of the results. These results have to be incorporated in a decision-making process regarding the planning and management of water systems. It is through this application that stochastic hydrology finds its true meaning, otherwise it becomes merely an academic exercise. A set of well known specialists from both stochastic hydrology and water resources systems present a synthesis of the actual knowledge currently used in real-world planning and management. The book is intended for both practitioners and researchers who are willing to apply advanced approaches for incorporating hydrological randomness and uncertainty into the simulation and optimization of water resources systems. (abstract) Stochastic hydrology is a basic tool for water resources systems analysis, due to inherent randomness of the hydrologic cycle. This book contains actual techniques in use for water resources planning and management, incorporating randomness into the decision making process. Optimization and simulation, the classical systems-analysis technologies, are revisited under up-to-date statistical hydrology findings backed by real world applications.

Earthquakes are the expression of the continuing evolution of the Earth planet and of the deformation of its crust and occur worldwide; while the largest events (M>7. 5) concentrate on plate boundary areas and active plate interiors, moderate earthquakes may take place, if rarely, in all continental areas and may turn catastrophic in areas with poor building construction practice, as tragically shown by the sequence of earthquakes striking the Caucasus region in recent years (Spitak, Armenia, 1988; Rutbar, W. Iran, 1990; Ratcha, Georgia, 1991; Erzincan, E. Turkey, 1992). Vulnerability to disaster is increasing as urbanisation and development occupy more areas that are prone to the effects of significant earthquakes. In order to minimize the loss of life, property damage and social and economic disruption caused by earthquakes, it is essential that reliable estimates of seismic hazard be available to national decision makers and engineers for land use planning and improved building design and construction. While short- and mid-term earthquake prediction may one day be able to reduce significantly the death toll of earthquakes, the environmental effects (collapse of buildings and infrastructures, disruption of the productive chain, human resettlement) can be reduced only through a long-term prevention policy in earthquake-prone areas based on the assessment of seismic hazard and risk, the implementation of safe building construction codes, the increased public awareness on natural disasters, a strategy of land-use planning taking into account the seismic hazard and the occurrence of other natural disasters.

Modeling of the rainfall-runoff process is of both scientific and practical significance. Many of the currently used mathematical models of hydrologic systems were developed a genera tion ago. Much of the effort since then has focused on refining these models rather than on developing new models based on improved scientific understanding. In the past few years, however, a renewed effort has been made to improve both our fundamental understanding of hydrologic processes and to exploit technological advances in computing and remote sensing. It is against this background that the NATO Advanced Study Institute on Recent Advances in the Modeling of Hydrologic Systems was organized. The idea for holding a NATO ASI on this topic grew out of an informal discussion between one of the co-directors and Professor Francisco Nunes-Correia at a previous NATO ASI held at Tucson, Arizona in 1985. The Special Program Panel on Global Transport Mechanisms in the Geo-Sciences of the NATO Scientific Affairs Division agreed to sponsor the ASI and an organizing committee was formed. The committee comprised the co directors, Professor David S. Bowles (U.S.A.) and Professor P. Enda O'Connell (U.K.), and Professor Francisco Nunes-Correia (Portugal), Dr. Donn G. DeCoursey (U.S.A.), and Professor Ezio Todini (Italy)."

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."

In recent years there have been a number of catastrophic floods that have resulted in a tragic loss of life. These natural disasters highlight the need to further understand the occurrence phenomena, to improve forecasting techniques, and to develop procedures and contingency plans to minimise the flood impact. This volume contains contributions from the 3rd International Conference on Floods and Flood Management held in Florence in November 1992. The volume is timely and provides an important overview for engineers, scientists, managers and researchers of the latest developments in technology, analysis and management.

In describing the geomorphological heritage of Scotland, this volume offers a remarkable account of how the natural environment responded in terms of landforms, processes and plant communities, to severe climatic change as the Quaternary era progressed over the last two million years. This legacy, as preserved in the 138 nationally important GCR sites described, documents a remarkable diversity of landforms in a relatively small area. The rugged highland contrast with the rolling hills and flat plains found further south, while the western and northern islands, together with the highly-indented coastline add further to the scenic diversity. How this variety of landscapes came into being, the forces which shaped it , and the climatic extremes which drove it, are the themes explored in this volume.

"Field screening" indicates field analytical tools, and (quick) methods and strategies for on-site or in-situ environmental analysis and assessment of contamination. "Field screening" includes not only field analytical methods, such as mobile laboratories, portable analyses, detectors, sensors, or noninvasive techniques, but also reconnaissance strategies and problems of measurement in heterogeneous media, using, among others, new geotechnical and geophysical instruments.

This volume contains both oral and poster contributions to the Second International Conference on Strategies and Techniques for the Investigation and Monitoring of Contaminated Sites, "Field Screening Europe 2001," held in Karlsruhe, May 14 - May 16, 2001. As an integrated study of environmental contamination, "field screening" has become a more and more important part of environmental monitoring and the assessment of chemical contaminations. Recent developments are presented in these proceedings.

Audience Environmental engineers, geo-scientists, chemists, biologists, soil scientists, hydrologists and geophysicists.

More than 10 years after the "First European Symposium on Organic Micropollutants in the Aquatic Environment," the "Sixth Symposium" was held in Lisbon (Portugal) from 22 to 24 May 1990. The Symposium was organised within the framework of the Concerted Action COST 641 * which is included in the Fourth R&D Programme on the Environment of the Commission of the European Communities expiring at the end of 1990. After restructuring the Concerted Action in 1984, particular attention has been devoted to fate and transformation of organic micropollutants in the aquatic environment. Therefore, a major aim of the Symposium was to review current studies and progress in these areas, besides more general aspects related to analytical methodologies and behaviour of pollutants during water treatment processes. This volume contains the plenary papers presented in the following sessions at the Symposium: - Multidisciplinary studies - Partitioning of organic micropollutants in the aquatic environment - Novel analytical techniques in environmental chemistry - Monitoring micropollutant - Degradation of organic micropollutants during field conditions - Reclamation of polluted ground water - Chemical and photochemical oxidation - Future of environmental chemistry. In addition, extended versions of posters are included, covering the four topics which are dealt within the four Working Parties forming the structure of the Concerted Action: 1. Analytical methodologies 2. Transport and distribution 3. Transformation reactions 4. Water treatment. We believe that the Proceedings give a good overview of current activities in these fields of research in Europe.

Environmental Systems Engineering and Economics emphasizes the application of optimization, economics, and systems engineering to problems in environmental resources management. This senior level/graduate textbook introduces optimization theory and algorithms that have been successful in resolving water quality and groundwater management problems. Both linear programming and nonlinear optimization are presented. Multiobjective optimization and the linked simulation-optimization (LSO) methodology are also introduced. The basic principles of economics and engineering economics are also discussed to provide a framework for economic decision making. This text contains numerous example problems. Case studies are presented that address water resources management issues in the north China plain, the control of saltwater intrusion in Jakarta, Indonesia, and groundwater resources management in the Yun Lin basin, Taiwan.

This interdisciplinary volume reviews the roots of conflict over the Jordan between Arabs and Jews and the development of that conflict over the past 150 years, analyzing the positions of Arabs and Israelis and the role of the United States in promoting a settlement.

Centralized, top-down management of water resources through regulations has created unnecessary economic burdens upon users. More flexible decentralized controls through the use of economic incentives have gained acceptance over the past decade. The theme of this book is the increasing efforts throughout water-scarce regions to rely upon economic incentives and decentralized mechanisms for efficient water management and allocation. The book begins with a section of introductory chapters describing water systems, institutions, constraints, and similarities in the following regions: Israel and the Middle East, Turkey, California, Florida, and Australia. Four of these regions face similar climates with wet winters and dry summers. Florida has a more even seasonal distribution of rainfall, yet it uses similar management strategies in controlling groundwater demand and water quality. The book concludes with a section on water management case studies. These case studies examine issues of conflict related to both water quality and water quantity. While the case studies address both international and intranational concerns in specific regions of the world, they portray broad principles that are applicable to many regions.

Trans-boundary water resources are often a cause of conflict among riparian entities. Increasing demand for water resources and deterioration of existing water sources underscore the need to resolve conflicts over the allocation of consumption and pollution rights among conflicting uses and users. Because economic growth of the entities that share a water resource depends on sustainability of the resource, water has great potential as a basis for cooperation among political entities. However, enforcement of cooperation particularly in international settings is limited. Thus, parties sharing a water resource will form and remain in a cooperating coalition only when economic incentives for each can be identified. This book offers an economic approach to resolution of conflicts by identifying economic mechanisms that encourage sustainable cooperation. The book includes discussions on international, interstate, and intrastate disputes regarding both water quantity and water quality issues. It presents mechanisms for facilitating cooperation among users from agricultural, industrial, domestic, and environmental sectors.It considers the experience and potential in many regions around the world including Australia (the Muray-Darling Basin), Latin America (Chile), the Middle East (Israel and the Palestinian Authority), the U.S. (California, Florida's Everglades, Hawaii, and the Chesapeake Bay), and Africa (South Africa, Lesotho). Part I of the book discusses international experience in forming water coalitions and offers an illustrative model of water quality coalitions. It emphasizes the dependence of sustainability of international agreements on the practical ability to create incentives through economic mechanisms and political linkages that overcome the problem of limited enforcement due to sovereignty claims. Part II of the book discusses management of intrastate U.S. water resources involving competing local jurisdictions or user groups and the U.S. and Australian attempts to facilitate state management of interstate water resources through federal cooperation. Part III of the book explores the expanding scope of trans-boundary water resource issues that contribute to complexity of conflict beyond traditional interests such as allocation and navigation rights.In particular, it analyzes the economic implications of nutrient, land, and airshed management in an environment where the interaction of trans-boundary water resources with the ecological system is considered. Trans-boundary water usage and infrastructure are discussed in the context of privatization and political uncertainty. Part IV of the book examines economic solutions to trans-boundary water allocation including water markets, tradable water permits, contractual arrangements, and coordinated management. The interaction between ground and surface water and the interaction between desalinated, recycled, and fresh water is analyzed in the context of optimal water allocation. The book concludes with a critical discussion of the role and potential of the economics profession in contributing to conflict resolution and management of trans-boundary water resources. The strengths and weaknesses of economic analysis are discussed with special consideration of the modern tools of bargaining theory and game theory that go beyond economic efficiency in considering political realities.

Bill Streever, author of Bringing Back the Wetlands and numerous technical articles about wetland restoration and creation, worked for two years to bring together this collection of papers. Authors ranging from private landowners to government managers to scientists present regional overviews, case studies, and discussions of various issues. Regional overviews cover areas as small as the Commonwealth of the Northern Mariana Islands to areas as large as Australia and Africa. Case studies range from relatively small projects, such as rehabilitation of damage caused by wheel ruts in the high arctic, to much larger projects, such as attempts to rehabilitate thousands of hectares of Northern Territory wetlands in Australia. Seedbank ecology, economics, remote sensing, community involvement, the role of the wetland consulting industry, and other issues are discussed. In an effort to synthesize information from around the world, Joy Zedler presents a model that allows comparison of projects and may lead to better predictability of project outcomes. In An International Perspective on Wetland Rehabilitation, authors describe planting, engineered structures, prescribed flooding, excavation, and other rehabilitation methods, from Israel to New Zealand to the Netherlands and elsewhere. For the first time, one volume offers an impression of the magnitude and diversity of the field of wetland rehabilitation around the globe.

Colleagues and friends of Dan Yaron submitted the following tributes. While each submission comes from an individual who knew Dan in a very different way, they all remark on his immeasurable contributions to the field of agricultural eco nomics, his unique approach, which combines his training and experience with his scientific background, and the admirable professionalism and civility that was apparent in every project he undertook. His work, initially inspired by the chal lenge of farmers in the arid Negev, eventually took him to the United States to work with universities and to serve on commissions furnishing his research with global applicability. Dan is not only admired for his enormous contributions to the vast body of research available in his field, but also for the commitment and dedi cation he epitomized. He will be greatly missed by those of us who were fortunate enough to make his acquaintance. ELIFEINERMAN The Hebrew University of Jerusalem, Rehovot, Israel Dan Yaron, my teacher and mentor of blessed memory, was a man of wisdom, thought, counsel and deeds. His many talents, his endless energy and his ambition led him to blaze new trails in research, to ask the relevant questions while separat ing the wheat from the chaff, and to answer them while mastering the most ad vanced scientific analyses.