sicht des Herausgebers der Schriftenreihe, auf dem Die Herausgeber des Welt-Seuchen-Atlas der Heidel- Grenzgebiet zwischen Medizin und Geographie zu berger Akademie der Wissenschaften, Ernst Roden- weiteren Forschungen anzuregen, gerecht werden. waldt und Helmut J. Jusatz, haben die Schriftenreihe "Medizinische Landerkunde" als eine Fortsetzung und Die Bearbeitung des geographischen Teiles hat in Erganzung ihres Werkes vor nunmehr 10 Jahren kon- dankenswerter Weise Herr Professor Dr. W. Kuls, zipiert. Der Verfasser ist dem Wunsche des verstorbenen Direktor des Geographischen Instituts der Universitat Begrtinders dieser Schriftenreihe, Prof. Dr. Dr. h. c. Bonn, tibernommen. Ais guter Kenner Athiopiens hat Ernst Rodenwaldt, die Bearbeitung Athiopiens zu tiber- Prof. Kuls aus eigener Anschauung und Landeskenntnis nehmen, urn so bereitwilliger nachgekommen, als er die mit einer Medizinischen Landerkunde im Zusammen- selbst die nach 12jahrigem Aufenthalt in Athiopien ge- hang stehenden medizinischen Probleme kennenlernen sammelten Erfahrungen und gemachten Beobachtungen konnen. Diese so wertvollen Erfahrungen haben ihren unter Berticksichtigung des inzwischen erschienen Niederschlag in der Bearbeitung des geographischen Schrifttums auszuwerten gedachte. Teiles gefunden. Ein besonderer Dank gilt ihm ftir die Der bis zur V ollendung des Bandes eher unbeab- Ausarbeitung der Kartenbeilagen tiber Klima, Vegeta- sichtigt verstrichene lange Zeitraum hat sich letzten tion' Geologie, Wirtschaft, Mineralquellen.

This volume is a collection of reports presented at the International NATO Advanced Research Workshop Conservation of the Biological Diversity as a Prerequisite for Sustainaible Development of the Black Sea Region. The seminar was held at Batumi - Kobuleti, Georgia, on the Black Sea during October 5 -12, 1996 with participants from the countries of the Black Sea Region -Georgia, Russia, the Ukraine, Turkey, Bulgaria, Romania, as well as Germany, Italy and the United States of America. The Black Sea Region is an essential and unique part of southern Europe because of its geographical, cultural and historical features. It is the cradle of European civilisation, together with Greece and Rome. For centuries it neighboured onto and interacted with the cultures of the northern and southern Mediterranean, the Christian and Moslim worlds, and was the route of conquerors and migrations of whole nations. Here are closely interwoven the cultures and customs of nations, economic and trade relations, the history of wars and civilised relations of neighbouring countries.

This is the eighth volume in the series "Mathematics in Industrial Prob lems." The motivation for these volumes is to foster interaction between Industry and Mathematics at the "grass roots level"; that is, at the level of specific problems. These problems come from Industry: they arise from models developed by the industrial scientists in ventures directed at the manufacture of new or improved products. At the same time, these prob lems have the potential for mathematical challenge and novelty. To identify such problems, I have visited industries and had discussions with their scientists. Some of the scientists have subsequently presented their problems in the IMA Seminar on Industrial Problems. The book is based on the seminar presentations and on questions raised in subsequent discussions. Each chapter is devoted to one of the talks and is self-contained. The chapters usually provide references to the mathematical literature and a list of open problems that are of interest to industrial scientists. For some problems, a partial solution is indicated briefly. The last chapter of the book contains a short description of solutions to some of the problems raised in the previous volume, as well as references to papers in which such solutions have been published."

Superfund liability). This is an issue that is currently having an dramatic impact on the industry. The impact is being felt in transactions involving the potential sale of properties, insuring operations, development of new properties, joint ventures, or more generally, practically every phase of the mining firms operation. The second issue focuses on an environmental topic that has not been specifically addressed in federal legislation, although it has been indirectly considered, that is global warming or the "greenhouse effect." One of the interesting aspects to this environmental problem is the uncertainty associated with it at every phase of the analysis. The predictions of the general circulation models of climatologists are questioned due to the uncertainty of ocean effects, urbanization, etc. (see Burness & Martin, Chapter 5). The economic models are criticized for the uncertainty associated with the benefit estimates from reducing greenhouse gases, particularly carbon dioxide (COJ, concentrations in the atmosphere as well as estimates of the cost of reducing GHG concentrations and/or emissions. This raises the interesting question of what is the optimal policy and what will be the impact of this policy(s) on the mining sector, given the uncertainty. The first of these two topics is addressed by V. Kerry Smith and Ronald G. Cummings, et al. Professors Smith and Cummings were chosen due to their pioneering work in the area of valuation of nonmarket goods, particularly involving the use of survey methods.

Significant amounts of liquid and solid radioactive waste have been generated in Russia during the production of nuclear weapons, and there is an urgent need to find suitable ways to manage these wastes in a way that protects both the current population and future generations. This book contains contributions from pure and applied scientists and other representatives from Europe, North America, and Russia, who are, or have been, actively involved in the field of radioactive waste management and disposal. First-hand experience of specific problems associated with defence-related wastes in the USA and the Russian Federation is presented, and current plans are described for the disposal of solid wastes arising from civilian nuclear power production programmes in other countries, including Belgium, Bulgaria, Canada, Germany and the UK. The book provides a good insight into ongoing research at local and national level within Russia, devoted to the safe disposal of defence-related radioactive waste. It also demonstrates how existing expertise and technology from civilian nuclear waste management programmes can be applied to solving the problems created by nuclear defence programmes. Contributions address methods of immobilisation, site selection methodology, site characterisation techniques and data interpretation, the key elements of safety/performance assessments of planned deep (geological) repositories for radioactive waste, and radionuclide transport modelling. Concerns associated with certain specific nuclear waste disposal concepts and repository sites are also presented.

New developments in computer science, biology, mathematics and physics offer possibilities to obtain deeper understanding of growth and forms of organisms. It is now possible to carry out simulation experiments in which the growth process can be simulated in virtual computer objects. In this book, methods from fractal geometry are applied to model growth forms. As a case study, a type of growth process is used which can be found among various taxonomic classes of organisms such as sponges and corals. The growth of these organisms is simulated with 2D and 3D geometrical objects. The models presented in the book provide a rendering method for natural objects which is based on the actual growth process. The models can be used, for example, to understand the amazing variety of forms to be found in a coral reef. Models which mimic the growth of forms and the environmental influence on the growth process are also useful for ecologists. A combination of simulation models and the actual growth forms can be used to detect the effects of slow changes in the environment.

Along with the general development of numerical methods in pure and applied to apply integral equations to geophysical modelling has sciences, the ability improved considerably within the last thirty years or so. This is due to the successful derivation of integral equations that are applicable to the modelling of complex structures, and efficient numerical algorithms for their solution. A significant stimulus for this development has been the advent of fast digital computers. The purpose of this book is to give an idea of the principles by which boundary-value problems describing geophysical models can be converted into integral equations. The end results are the integral formulas and integral equations that form the theoretical framework for practical applications. The details of mathematical analysis have been kept to a minimum. Numerical algorithms are discussed only in connection with some illustrative examples involving well-documented numerical modelling results. The reader is assu med to have a background in the fundamental field theories that form the basis for various geophysical methods, such as potential theory, electromagnetic theory, and elastic strain theory. A fairly extensive knowledge of mathematics, especially in vector and tensor calculus, is also assumed."

Integrated Water Resources Management (IWRM) is an approach that promotes the coordinated development and management of water, land and related resources, in order to maximize economic and social welfare in an equitable manner without compromising the sustainability of vital ecosystems. Without public interest and participation, successful implementation of IWRM plans for river basin cannot be possible. Further to this, management at the watershed level to assure water supplies to support livelihood (i.e. domestic water, irrigation, industries, etc.) and sustainable groundwater development requires water augmentation through water conservation structures, and pollution control will also play a vital role. In India, because of limited period of rainfall during Monsoon (i.e. three to four months), water conservation and rainwater harvesting have been practiced since ancient days in order to meet water demands throughout the year. These structures are generally constructed and operated through the public participation. Keeping in view of the importance of public partnership, the role of public partnership in context of water-related awareness and practices has been investigated in different parts of the Yamuna River basin. The investigation evaluates the impact of various water conservation devices on livelihood; compares the performance of recently developed water conservation structures with ancient structures; examines spatial variation of water-related problems in the basin; and proposes an institutional setup for effective governance.

This book is the provisional result of more than 10 years of continued discussion with friends and colleagues from neighbouring disciplines. Although only a small minority ofthe millions of GIS users on this planet are geographers, it seems that somehow, geographers are a kind ofnatural contact persons for historians, archae- ologists, economists, social scientists or others who are looking for appropriate ways ofworking with spatial data. We received constant encouragements and many valuable suggestions from our colleagues. Particularly we wish to thank the members ofthe GIS Study Group of the German Association of Geography (AK GIS) as well as the participants of a workshop in June 2000 on "Mapping Europe's historic boundaries and borders" which was generously sponsored by the European Science Foundation. Among the individuals we owe special appreciation are Humphrey Southall and Ian Gregory (The Great Britain Historical GIS Programme, University ofPortsmouth), Michael Goerke (European University Institute, Florence), Konrad Pierau (Center for His- torical Social Research, University of Cologne), Bernhard Holfter (Forderverein Historische Grundkarte, Leipzig) and Stephan Riediger (Department of History, University of Mannheim).

While I was participating in the IUTAM Symposium on Structure of Turbulence and Drag Reduction in Zurich, Switzerland, in 1989, I was approached by Prof. Dr. Themistocles Dracos to give a course oflectures on the Atmospheric Boundary Layer during my sabbatical leave at Eidgenossische Technische Hochschule (ETH) Zurich - Hoenggerberg in 1991. His reason for the suggestion was the growing interest in the environment and its dynamics created by flow in the Atmospheric Boundary Layer. I have been teaching boundary layer to undergraduate and graduate students for more than twenty five years, so I agreed to give a series of lectures on boundary layer of the atmosphere. From the start I thought very seriously about the problem and consulted all the published works in English on the Atmospheric Boundary Layer (ABL). First consider the topography of the Earth which has oceans calm and turbulent, mountain ranges of height up to 9 km, lands of variable height with forests, food growing vegetable and deserts. The shape of the Earth is nearly spherical except at the north and south poles. Sun supplies the energy to drive circulation of air around the Earth's atmosphere which for all practical purposes occupies the region up to about 10 to 11 km. This brief scenerio of Earth's topography reveals the complexity of flow very close to the Earth's surface that is hardly flat except at the oceans' surface which consists of about 70% of the total Earth's surface.

The editors intend that this book conveys the remarkable variety and fundamental importance of the late Helmut E. Landsberg's many contributions to the science of climatology and its practice over a very productive 55-year career. We thank the distinguished authors for their contributions. We also thank Corinne Preston and Charlene Mann for their invaluable word-processing assistance and preparation of camera-ready copy. Finally, we thank Joshua Holland for permission to reproduce his portrait of Landsberg, and Jeanne Moody for preparation of the index. F. Baer N. L. Canfield J. M. Mitchell Editors vii CONTRmUTORS Ferdinand Baer, Department of Meteorology, University of Maryland, College Park, Maryland, USA Norman L. Canfield, Department of Meteorology, University of Maryland, College Park, Maryland, USA Dennis M. Driscoll, Department of Meteorology, Texas A & M University, College Station, Texas, USA William H. Haggard, Climatological Consulting Corporation, Asheville, North Carolina, USA David M. Ludlum, Founding Editor, Weatherwise, Princeton, New Jersey, USA Thomas F. Malone, St. Joseph College, West Hartford, Connecticut, USA J. Murray Mitchell, National Oceanic and Atmospheric Administration (retired), McLean, Virginia, USA Timothy R. Oke, Department of Geography, University of British Columbia, Vancouver, British Columbia, Canada Joseph Smagorinsky, National Oceanic and Atmospheric Administration (retired), Princeton, New Jersey, USA Hessam Taba, World Meteorological Organization (retired), Geneva, Switzerland Morley Thomas, Atmospheric Environment Service (retired), Downsview, Ontario, Canada. IX OVERVIEW Ferdinand Baer Helmut E.

The first part of the conference explores two major environmental concerns that arise from fuel use: (1) the prospect that the globe will become warmer as a result of emissions of carbon dioxide, and (2) the effect upon health of the fine particles emitted as combustion products. The conference focused on the fact that there was lack of data direct enough to enable us to predict an entirely satisfactory result, and that makes policy options particularly difficult. With regard to (1) above, in the second half of the 20th century there were major increases in anthropogenic C02 emissions, and it is generally agreed that these were responsible for an increase in C02 concentrations. But the relationship between global temperature and CO2 concentrations remains murky. The principal problem is that water vapor is a more important greenhouse gas than C02 and that the concentrations of water vapor vary widely in time and space. The approach to this problem is probably, but not certainly, a positive feedback effect: as temperature increases so does the water vapor leading to further temperature increases. Scientists associated with the Intergovernmental Panel on Climate Change (IPCC) tend to believe the general features of the models. Other scientists are often less convinced.

From the reviews: "Researchers in fluid dynamics and applied mathematics will enjoy this book for its breadth of coverage, hands-on treatment of important ideas, many references, and historical and philosophical remarks." Mathematical Reviews

The Sixth Trieste Conference on Chemical Evolution for the first time has also been a Euroconference. This year we focused on "First Steps in the Origin of Life in the Universe". (Both this Centre and the ICGEB have been sponsors since we first started planning the series with Professors Abdus Salam and Cyril Ponnamperuma. ) The conference had the following 11 sponsors: The Abdus Salam International Centre for Theoretical Physics, The European Commission, The SETI Institute, Consiglio Nazionale delle Ricerche, Rome, Italy, The International Centre for Genetic Engineering and Biotechnology, Trieste, The European Space Agency (ESA), National Aeronautics and Space Administration (NASA) Universite Paris 12, The ICTP Public Information Office, La Fondazione Internazionale Trieste per il Progresso e la Liberta della Scienza, and II Laboratorio dell'Immaginario Scientifico. of our Over 90 participants allowed us to make a truly comprehensive review subject. In 82 presentations we had contributions from experts in questions related to the origin, evolution, distribution and destiny of life in the universe, topics that are known together as the science ofastrobiology. The publication ofthese proceedings was largely due to a generous grant form the Consiglio Nazionale delle Ricerche, Rome, Italy. The general topic of the conference concerned the origin, evolution, distribution and destiny of life in the Universe, a subject referred to as astrobiology and also as exobiology. In this report we prefer the synonym Astrobiology.

General circulation models state that the central United States (and other mid-latitude continental regions) will become warmer and drier as the result of greenhouse warming. On this premise the dustbowl period of the 1930s was selected as an analogue of climate change and its weather records imposed on the Missouri--Iowa--Kansas region to assess how current agriculture, forestry, water resources and energy and the entire regional economy would be affected. The same climate was also imposed on a MINK region forty years into the future, by which time climate change may actually be felt, to assess whether technological and societal change would alter the region's vulnerability to climate change. Another premise of the study was that people would not suffer the impacts of climate change passively, but would use availabe tools to ease the stress. The rising atmospheric concentration of carbon dioxide, expected to be the major cause of greenhouse warming, also works to improve plant growth and reduce plant water use. So the effects of this `Co2 fertilization' were also considered in the analysis. The results, some of them surprising, of this first, fully-integrated analysis of climate change impacts and responses are reported in this book.

A survey of the feasibility of aircraft- and satellite-based methods for revealing environmental-geological problems. Throughout, a balanced ratio between explanations on the methodological/technical side and presentations of case studies is maintained. The comparison of case studies from North America and Germany shows how the respective territorial conditions lead to distinct methodological approaches. Equally, the considerable dissimilarities in population density and in distances between waste disposal areas, settlements, and areas of protected groundwater necessitate a "diversified methods" approach.

The Conference on the Earth-Moon relationships brought together a number of distinguished scientists from different fields - such as Astronomy, Celestial Mechanics, Chemistry - but also scholars of Literature and Art, to discuss these relationships, their origins, and their influence on human activities and beliefs.

Mathematically, natural disasters of all types are characterized by heavy tailed distributions. The analysis of such distributions with common methods, such as averages and dispersions, can therefore lead to erroneous conclusions. The statistical methods described in this book avoid such pitfalls. Seismic disasters are studied, primarily thanks to the availability of an ample statistical database. New approaches are presented to seismic risk estimation and forecasting the damage caused by earthquakes, ranging from typical, moderate events to very rare, extreme disasters. Analysis of these latter events is based on the limit theorems of probability and the duality of the generalized Pareto distribution and generalized extreme value distribution. It is shown that the parameter most widely used to estimate seismic risk Mmax, the maximum possible earthquake value is potentially non-robust. Robust analogues of this parameter are suggested and calculated for some seismic catalogues. Trends in the costs inferred by damage from natural disasters as related to changing social and economic situations are examined for different regions.

The results obtained argue for sustainable development, whereas entirely different, incorrect conclusions can be drawn if the specific properties of the heavy-tailed distribution and change in completeness of data on natural hazards are neglected.

This pioneering work is directed at risk assessment specialists in general, seismologists, administrators and all those interested in natural disasters and their impact on society."

This is the first thorough examination of weakly nonlocal solitary waves, which are just as important in applications as their classical counterparts. The book describes a class of waves that radiate away from the core of the disturbance but are nevertheless very long-lived nonlinear disturbances.

This book is the first comprehensive, in-depth review and summary of the U.N. FCCC AIJ pilot. Over 30 prominent players in the U.N. FCCC AIJ pilot, drawn from 12 countries, prepared the 16 peer-reviewed chapters in this book. Most chapters are extensively illustrated and the book contains a glossary of acronyms and a list of points of contact in the U.N. FCCC AIJ pilot. To help meet the technical and policy needs associated with the U.N. FCCC and complementary treaty negotiations, this book has three broad objectives: review, interpret and compile experiences of AIJ pilot participants and observers; based on empirical data and skilled observations, identify and document lessons learned from the AIJ pilot; and, interpret, summarize and translate lessons learned for future consideration by FCCC parties. Specific topics covered in this book include an introduction to the AIJ pilot and the FCCC guidelines/criteria, AIJ project development and finance, the project development community, an overview of energy and land-use and forestry sector projects, sustainable development, technology transfer, human and institutional capacity building, legal issues, and project monitoring, verification and reporting. This volume will be of interest to the generalists familiar with FCCC issues and negotiations but explores most topics in sufficient technical and policy depth to be must reading for policy analysts, diplomats, environmental protection specialists, scientists, engineers, project developers, attorneys, economists, development workers, foresters, and energy specialists.

Climate change poses important challenges to research and policy. Within three decades, an issue that was initially confined to the attention of a few scientists became the topic of large-scale research programmes, national and European policies and an international Convention. While significant uncertainties remain on the timing and scale of the changes to be expected and of their impacts, an appreci ation emerged of the high ecological, economic, political and social stakes involved and lead to governmental, business and citizens' initiatives. After focusing on the understanding of climate processes and the possible impacts of climate change on ecosystems, European research - and international research more generally - started addressing also the social, economic and policy causes of and responses to climate change. In the meantime, local, national and European measures started being developed to mitigate carbon dioxide emissions, a European target was agreed to achieve the stabilization of carbon dioxide by 2000 at the levels of 1990, the Framework Convention on Climate Change (FCCC) was adopted and was followed by its Kyoto Protocol.

Lowering the Cost of Emission Reduction by Dr Michael Ridley investigates a novel way to reduce the cost of carbon dioxide and sulphur dioxide emission reduction. This book asks whether allowing countries to substitute emission reduction undertaken abroad in lieu of emission reduction at home will reduce the cost of emission reduction and allow more rapid and acute falls in pollution. Analysing US Department of Energy data on US emission reduction projects undertaken in Eastern Europe and Central America, this book explains differences in the cost of emission reduction by method and by country. The book sets out the conditions that would allow a joint implementation system to evolve into a full-blown tradable permits system. Political and practical objections to joint implementation are aired and addressed. This book is targeted at the environmental policy community, government officials, academics, the NGO community, economists and financiers, members of large corporations and museum educators everywhere.

This volume constitutes the Proceedings of the IUT AM Symposium on Mechanics of Granular and Porous Materials, held in Cambridge from 15th to 17th July 1996. The objectives were: 1. To review existing experimental results and practical phenomena on the flow and compaction of particulate media; 2. To review the current state of constitutive models, and their implementation for predicting the macroscopic response. 3. Identification of the shortcomings of existing models and procedures in understanding practical phenomena. The Symposium brought together the research communities of solid mechanics, materials science, geomechanics, chemical engineering and mathematics to review current knowledge of the flow and compaction of granular and porous media. The meeting emphasised the development and use of constitutive laws to model practical processes such as mixing, drainage and drying, compaction of metal and ceramic powders and soils, and instabilities associated with these processes. A common theme was to develop constitutive models from an understanding of the underlying physical mechanisms of deformation and fracture. It was particularly rewarding to find that the separate research communities came together during the meeting and came to a consensus as to the main mechanisms of deformation and failure of particulate and porous solids.

Dissociative Recombination of Molecular Ions with Electrons is a comprehensive collection of refereed papers describing the latest developments in dissociative recombination research. The papers are written by the leading researchers in the field. The topics covered include the use of microwave afterglows, merged beams and storage rings to measure rate coefficients and to identify the products and their yields. The molecules studied range in size from the smallest, H2+, to bovine insulin ions. The theoretical papers cover the important role of Rydberg states and the use of wave packets and quantum defect theory to deduce cross sections, rate constants and quantum yields. Several theoretical and experimental papers address the controversial topic of H3+ dissociative recombination and its importance in the interstellar medium. Dissociative recombination studies of other molecular ions in the interstellar medium and in cometary and planetary atmospheres are covered. Ionization is an important competitive process to dissociative recombination and its competition with predissociation and its role in the reverse process of the association of neutral species is presented. Dissociative attachment, in which an electron attaches to a neutral molecule, has many similarities to dissociative recombination. The topics covered include the accurate calculation of electron affinities, attachment to molecules, clusters, and to species absorbed on solid surfaces and electron scattering by a molecular anion.