ALBERT

Beschreibung / Inhaltsverzeichnis: Geochemistry is a science that is based on an understanding of chemical processes in the earth. One of the principal tools available to the chemist for understanding systems at equilibrium is thermodynamics. The awareness and application of thermodynamic techniques has increased at a very fast pace in geosciences; in fact, one may be so bold as to say that thermodynamics in geology has reached the "mature" stage, although much future thermodynamic research is certainly needed. However, the natural processes in the earth are often sluggish enough that a particular system may not reach equilibrium. This observation is being supported constantly by new experimental and field data available to the geochemist e.g. the non-applicability of the phase rule in some assemblages, the compositional inhomogeneities of mineral grains, the partial reaction rims surrounding original minerals, the lack of isotopic equilibration or the absence of minerals (e.g. dolomite), which should be present according to thermodynamics. The need to apply kinetics has produced a large number of papers dealing with kinetics in geochemistry. As an initial response to this growing field, a conference on geochemical transport and kinetics was conducted at Airlie House, VA, in 1973, sponsored by the Carnegie Institution of Washington. The papers there dealt with several kinetic topics including diffusion, exsolution, metasomatism and metamorphic layering. Since 1973 the number of kinetic papers has continued to increase greatly. Therefore, the time is ripe for a Short Course in Kinetics, which brings together the fundamentals needed to explain field observations using kinetic data. It is hoped that this book may serve, not only as a reference for researchers dealing with the rates of geochemical processes, but also as a text in courses on geochemical kinetics. One of us has found this need of a text in teaching a graduate course on geochemical kinetics at Harvard and at Penn State during the past several years. Finally, it is our hope that the book may itself further even more research into the rates of geochemical processes and into the quantification of geochemical observations. The book is organized with a rough temperature gradient in mind, i.e. low temperature kinetics at the beginning and igneous kinetics at the end (no prejudices are intended with this scheme!). However, the topics in each chapter are general enough that they can be applied often to any geochemical domain: sedimentary, metamorphic or igneous. The theory of kinetics operates at two complementary levels: the phenomenological and the atomistic. The former relies on macroscopic variables (e.g. temperature or concentrations) to describe the rates of reactions or the rates of transport; the latter relates the rates to the basic forces operating between the particular atomic or molecular species of any system. This book deals with both descriptions of the kinetics of geochemical processes. Chapter one sets the framework for the phenomenological theory of reaction rates. If any geochemical reaction is to be described quantitatively, the rate law must be experimentally obtained in a kinetically sound manner and the reaction mechanism must be understood. This applies to heterogeneous fluid-rock reactions such as those occurring during metamorphism, hydrothermal alteration or weathering as well as to homogeneous reactions. Chapter 2 extends the theory to the global kinetics of geochemical cycles. This enables the kinetic concepts of stability and feedback to be applied to the cycling of elements in the many reservoirs of the earth. Chapter 3 applies the phenomenological treatment of chapter 1 to diagenesis and weathering. The rate of dissolution of minerals as well as the chemical evolution of pore waters are discussed. The atomistic basis of rates of reaction, transition state theory, is introduced in Chapter 4. Transition state theory can be applied to relate the rate constants of geochemical reactions to the atomic processes taking place. This includes not only homogeneous reactions but also reactions that occur at the surface of minerals. Chapter 5 discusses the theory of irreversible thermodynamics and its application to petrology. The use of the second law of thermodynamics along with the expressions for the rate of entropy production in a system have been used successfully since 1935 to describe kinetic phenomena. The chapter applies the concepts to the growth of minerals during metamorphism as well as to the formation of differentiated layers (banding) in petrology. Chapter 6 describes the phenomenological theory of diffusion both in aqueous solutions and in minerals. In particular, the multicomponent nature of diffusion and its consequence in natural systems is elaborated. Chapter 7 provides the atomistic basis for the rates of reactions in minerals. Understanding of the rates of diffusion, conduction, order-disorder reactions or exsolution in minerals depends on proper description of the defects in the various mineral structures. Chapter 8 provides the kinetic theory of crystal nucleation and growth. While many of the concepts in the chapter can be applied to aqueous systems, the emphasis is on igneous processes occurring during crystallization of a melt. To fully understand both the mineral composition as well as the texture of igneous rocks, the processes whereby new crystals form and grow must be quantified by using kinetic theory. Due to space and time limitations (kinetics!) some topics have not been covered in detail. In particular, the mathematical solution of diffusion or conduction equations is discussed very well by Crank in his book, Mathematics of Diffusion, and so is not covered to a great extent here. The treatment of fluid flow (e.g. convection) is also not covered in the text.

Beschreibung / Inhaltsverzeichnis: Antarctic Geoscience is the proceedings volume of the Third Symposium on Antarctic Geology and Geophysics, held in Madison, Wisconsin. The 151 chapters in the book, which include both review papers and original contributions, range over all major fields of geoscience. At a time when interest in Antarctica, its geologic history, and its mineral resource potential is increasing, this book provides the most current and comprehensive overview of the subject. These papers, representing the recent work of many scientists from fifteen nations, offer a balanced assessment of current thought and knowledge concerning the geology and geoscience of Antarctica and the surrounding oceanic regions. Together, they constitute the most up-to-date reference work on Antarctic earth sciences. The book is divided into twelce sections: Gondwanaland (11 chapters), Scotia Arc Region (39, East Antarctica Shield (14), Upper Precambrian-Paleozoic Rocks (11), Paleontology (8), Igneous Rocks (14), Structural Geology and Tectonics (9), Mineral Deposits (4), Crustal Structure (13), Subglacial Morphology (4), Marine Geology (8), and Cenozoic History (16). The volume is generously illustrated with photographs and line drawings and includes a large color geologic map of the continent.

Beschreibung / Inhaltsverzeichnis: Climate Since A.D. 1500 presents a unique perspective on the 'Litte Ice Age' and the climate of the twentieth century. Leading scientists explore historical documents, dendroclimatic data and ice core records from all over the world, presenting an invaluable compilation for all those concerned with past climate and the risks of man-made climatic change in the future. This revised edition includes a new chapter summarizing the wealth of literature on climatic change over the past few years and a new and expanded index.

Beschreibung / Inhaltsverzeichnis: Deterministic chaos offers a striking explanation for irregular behaviour and anomalies in systems which do not seem to be inherently stochastic. The most direct link between chaos theory and the real world is the analysis of time series from real systems in terms of nonlinear dynamics. This book provides experimentalists with methods for processing, enhancing, and analysing measured signals using these methods; and for theorists it also demonstrates the practical applicability of mathematical results. The framework of deterministic chaos constitutes a new approach to the analysis of irregular time series. Traditionally, nonperiodic signals have been modelled by linear stochastic processes. But even very simple chaotic dynamical systems can exhibit strongly irregular time evolution without random inputs. Chaos theory offers completely new concepts and algorithms for time series analysis which can lead to a thorough understanding of the signals. The book introduces a broad choice of such concepts and methods, including phase space embeddings, nonlinear prediction and noise reduction, Lyapunov exponents, dimensions and entropies, as well as statistical tests for nonlinearity. Related topics such as chaos control, wavelet analysis, and pattern dynamics are also discussed. Applications range from high-quality, strictly deterministic laboratory data to short, noisy sequences which typically occur in medicine, biology, geophysics, and the social sciences. All the material discussed is illustrated using real experimental data. This book will be of value to any graduate student or researcher who needs to be able to analyse time series data, especially in the fields of physics, chemistry, biology, geophysics, medicine, economics, and the social sciences.

Beschreibung / Inhaltsverzeichnis: Chapter I. Air-Sea Exchange Processes and Flux --- Chemical composition of marine aerosols over the Central North Pacific—Results ftom the 1991 cruise of Hakurei Maru No. 2 / Uematsu, M., Kawamupa, K., Ibusuki, T. and Kimoto, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 3-14 --- Estimation of mineral aerosol fluxes to the Pacific by using environmental plutonium as a tracer / Nakanishi, T., Shiba, Y., Muramatsu, M. and Haque, M. A. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 15-30 --- Land-derived lipid class compounds in the deep-sea sediments and marine aerosols from the North Pacific / Kawamura, K. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 31-51 --- Iron and manganese in the atmosphere and oceanic waters / Nakayama, E., Obata, H., Okamura, K., Isshiki, K., Karatani, H. and Kimoto, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 53-68 --- Laboratory estimation of CO2 transfer velocity across the air-sea interface / Komom, S., Shimada, T. and Murakami, Y. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 69-81 --- Dissolution of calcareous tests in the ocean and atmospheric carbon dioxide / Nozaki, Y. and Oba, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 83-92 --- Calcium carbonate production and carbon dioxide flux on a coral reef, Okinawa / Ohde, S. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 93-98 --- Chapter II. Geochemical Processes in Seawater --- Generations of carbonyl sulfide and hydrogen peroxide in the Seto Inland Sea—Photochemical reactions progressing in the coastal seawater / Fujiwara, K., Takeda, K. and Kumamoto, Y. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 101-127 --- Speciation of organoarsenical compounds in the hydrosphere / Sohrin, Y., Hasegawa, H. and Matsui, M. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 129-138 --- Chemical speciation of selenium in natural waters / Nakaguchi, Y., Koike, Y. and Hiraki, K. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 139-158 --- The concentration distribution and chemical form of arsenic compounds in seawater / Tanaka, S. and Santosa, S. J. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 159-170 --- The rare earth elements and yttrium in the coastal/offshore mixing zone of Tokyo Bay waters and the Kuroshio / Nozaki, Y. and Zhang, J. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 171-184 --- The tetrad effect in seawater; a long dispute and an analytical approach to the confirmation of the effect / Akagi, T. and Masuda, A. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 185-199 --- Detection, characterization and dynamics of dissolved organic ligands in oceanic waters / Tanoue, E. and Midorikawa, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 201-224 --- Chapter III. Primary Production and Other Biological Processes --- Nitrate assimilation and new production in open ocean / Kanda, J. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 227-238 --- Primary production and community respiration in the subarctic water of the western North Pacific / Odate, T. and Furuya, K. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 239-253 --- Effects of a seamount on phytoplankton production in the western Pacific Ocean / Furuya, K., Odate, T. and Taguchi, K. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 255-273 --- Marine colloids: Their roles in food webs and biogeochemical fluxes / Nagata, T. and Koike, I. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 275-292 --- Regional and seasonal variations of biomass and bio-mediated materials in the North Pacific Ocean / Yanada, M. and Maita, Y. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 293-306 --- Nitrogen and carbon stable isotopic ecology in the ocean: The transportation of organic materials through the food web / Sugisakj, H. and Tsuda, A. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 307-317 --- The role of carnivorous zooplankton, particularly chaetognaths in ocean flux / Terazaki, M. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 319-330 --- Seasonal changes in deep-sea benthic foraminiferal populations: Results of long-term observations at Sagami Bay, Japan / Kitazato, H. and Ohga, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 331-342 --- Chapter IV. Particle Flux and Sediment Geochemistry --- Spatial variation of Al flux in the North Pacific observed with sediment trap / Noriki, S., Iwai, T., Shimamoto, A., Tsunogai, S. and Harada, K. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 345-354 --- Spatial and temporal variation of δ515N in sinking particles in deep waters: Its implication for the origin and transport of particulate organic matter / Nakatsuka, T., Handa, N. and Imaizumi, S. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 355-374 --- 230Th and 231Pa distributions in surface sediments off Enshunada, Japan / Taguchi, K. and Narita, H. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 375-382 --- Remobilization of transition elements in pore water of continental slope sediments / Kato, Y., Tanase, M., Minami, H. and Okabe, S. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 383-405 --- Geochemistry of pore waters from a bathyal Calyptogena community off Hatsushima Island, Sagami Bay, Japan / Masuzawa, T., Nakatsuka, T. and Handa, N. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 407-421 --- Chapter V. Submarine Hydrothermal Processes --- Wide variation of chemical characteristics of submarine hydrothermal fluids due to secondary modification processes after high temperature water-rock interaction: a review / Gamo, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 425-451 --- Geochemistry of phase-separated hydrothermal fluids of the North Fiji Basin, Southwest Pacific / Ishibashi, J. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 453-467 --- Chemical modeling of seawater-rock interaction: Effect of rock-type on the fluid chemistry and mineral assemblage / Chiba, H. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 469-486 --- Hydrothermal mineralization in the Mid-Okinawa Trough / Nakashima, K., Sakai, H., Yoshida, H., Chiba, H., Tanaka, Y., Gamo, T., Ishibashi, J. and Tsunogai, U. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 487-508 --- Iron-rich smectite formation in the hydrothermal sediment of Iheya Basin, Okinawa Trough / Masuda, H. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 509-521 --- Formation and alteration of organic compounds in simulated submarine hydrothermal vent environments / Kobayashi, K., Kohara, M., Gamo, T. and Yanagawa, H. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 523-535 --- Localized heat flow anomalies in the middle Okinawa Trough associated with hydrothermal circulation / Kinoshita, M. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 537-559 --- Chapter VI. Modeling and Physical Oceanography --- Material transport models from Tokyo Bay to the Pacific Ocean / Yanagi, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 563-574 --- Climate and weather effects on the chlorophyll concentration in the northwestern North Pacific / Sugimoto, T., Tadokoro, K. and Furushima, Y. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 575-592 --- Ecosystem models for the three regional problems in the Northern Pacific / Kishi, M. J. and Kawamiya, M. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 593-611 --- A review on the subtropical mode water of the North Pacific (NPSTMW) / Hanawa, K. and Suga, T. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 613-627 --- Flow distribution at 165°E in the Pacific Ocean / Kawabe, M. and Taira, K. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 629-649 --- Determination of monthly mean sea surface temperature from 1981 to 1990 by the NOAA-AVHRR in the equatorial Pacific / Kishino, M. / Biogeochemical Processes and Ocean Flux in the Western Pacific, / pp. 651-659

Beschreibung / Inhaltsverzeichnis: PREFACE The aim of this volume is two-fold. At the more pragmatic level, it is to help answer the many questions about the structure of the Pacific continental margin of North America, which have arisen over the years as a result of continuing field mapping and geophysical surveys. The second objective is methodological - to illustrate the irreplaceable role of geological information among the various data sets used in earth-science studies. The need to address these issues became apparent to the author during the several years he spent taking part in geological and geophysical studies on the west coast of Canada. All too often, results of geologic field mapping disagreed with tectonic predictions from too-straightforward local applications of global plate reconstructions, which due to their generality do not always take a full account of specific character of particular regions. To be sure, the global approach has during the last q~/artercentury greatly expanded the vision of geoscientists, previously restricted to continental regions. However, a negative by-product of this expansion has been a decline of attention paid to local information, as tectonic studies have increasingly relied on simply fitting the development of a particular region into this or that prefabricated tectonic template. Direct geological observations have limitations of their own. The observer in most cases deals with products of geologic processes, rather than with the processes themselves. Field mapping provides local information, and many years of effort are needed before a regional overview becomes possible. Geologic mapping is restricted to the ground surface, and even the deepest drillholes cannot sample more than the outermost shell of the Earth. The factual side of geologic mapping is usually limited to determination of rock types and their relationships in areas of exposure. Conclusions about the three-dimensional structure of a region and its evolution are still mostly inferential. Broad incorporation into geological studies of geophysical data, assisted by ever-more-sophisticated modern computers, provides a huge volume of information unobtainable in other ways. Geophysical methods quickly afford regional coverage or images of the Earth's deep interior. Geophysical methods have prompted the application in geological sciences of methodologies borrowed from exact sciences, such as mathematics and physics. Particularly important has been quantitative modeling, which allows a scientist to use the known parameters of a system to predict others. But in taking this approach too far, one encounters a dangerous pitfall. A model is a simplified representation of a natural phenomenon. The quality of this or that representation is relative, and a representation is never perfect. To incorporate all characteristics of a geologic phenomenon, in a parametrized form, into a numerical or physical imitation is impossible. This requires one to rely on simplifying assumptions, and a model is no better than the assumptions at its base. Unrealistic assumptions lead to unrealistic models. When a disagreement arises between model predictions and observations - such as those from geologic field mapping - a modeler may be tempted to downplay the differences or the significance of the offending observations. It becomes tempting to underestimate the role of an experienced geologist as a principal arbiter of the realism of a model. But it is geological data and geological control that provide the ultimate means of testing abstract models. From this methodological position, the present study of the western North American continental margin is organized as follows: 1. Geological information, available from field mapping and drilling, is gathered and summarized. 2. Current geophysical models for this region are considered, with particular attention to their underlying assumptions. 3. The available data, geological and geophysical, are synthesized into an internally consistent geologic-evolution concept. 4. This concept is tested by comparison with direct geological observations from field mapping and drilling. Because most current data sets and models cover northwestern Washington and western British Columbia, particular attention was paid to these areas. Fortunately, these areas contain many keys that help understand the structure of the entire western North American continental margin, which has baffled scientists for decades. The author does not claim to have resolved all these problems, but he does believe he has made a useful contribution to understanding continental-oceanic plate interrelations at this continental margin. Rigidity of lithospheric plates is a critical assumption in current models of plate evolution. The lithophere of a plate is created at spreading centers manifested in the global system of mid-ocean ridges. It moves away from the place of its birth towards boundaries with other plates, with which it can interact in a variety of ways. Some interactions are of strike-slip type, with two plates simply sliding past each other. However, to compensate for the creation of new lithosphere at spreading centers, older lithosphere at some plate boundaries descends into the mantle as it is overriden by other plates. At such plate boundaries lie subduction zones. If both regimes occur along a single plate boundary, the transition between them must be abrupt. Unless it can be tied to a change in orientation of the boundary, it must be associated with a junction of not two, but three different plates. Such a template was used to interpret the structure and tectonic evolution of the western North American continental margin in the late 1960s and thereafter (Atwater, 1970; McManus et al., 1972; Barr and Chase, 1974; Riddihough and Hyndman, 1976). To satisfy the principles of rigid-plate tectonics, both regimes have to exist along this continental margin. Also needed in rigid-plate reconstructions is a plate triple junction somewhere between the areas of proven ongoing subduction (in Oregon and southern Washington) and transform plate motion (along the southeastern Alaska margin; Atwater, 1970; McManus et al., 1972). Such a triple junction has been placed off Queen Charlotte Sound offshore British Columbia (Keen and Hyndman, 1979; Riddihough et al., 1983), where a spreading center has been postulated between the Pacific and Explorer oceanic plates (Hyndman et al. 1979; Riddihough, 1984). Off northern Vancouver Island, a transform boundary between the Explorer and Juan de Fuca oceanic plates has been postulated, but both these plates are assumed to be subducting beneath Vancouver Island (Hyndman et al., 1979; Riddihough and Hyndman, 1989)o With the assumed universality of the rigid-plate model, "broad similarity" has been suggested between the geology of western Oregon and that of western British Columbia, and the Cascadia zone of active subduction has been extended as far north as the mouth of Queen Charlotte Sound (Riddihough, 1979, 1984). An accretionary sedimentary prism (Yorath, 1980) - or even an accretionary complex containing several exotic "terranes" (Davis and Hyndman, 1989) - has been postulated off Vancouver Island. Geological observations onshore and offshore (Shouldice, 1971; Tiffin et al., 1972) have come to be considered too "surficial" to be of major consequence for large-scale tectonic modeling (Yorath et al., 1985a,b; Yorath, 1987). Variants of the principal geophysical model for this area during the last decade (Clowes et al., 1987; Hyndman et alo, 1990; Spence et al. 1991; Yuan et al., 1992; Dehler and Clowes, 1992) have become increasingly distant from geological observations. As new model variants emerged, they were checked for internal consistency, compatibility with neighboring local models and fidelity to the overall assumed tectonic picture. However, detailed geological work continued, and many of its results proved incompatible with the conventional wisdom (Gehrels, 1990; Babcock et al., 1992, 1994; Allan et al., 1993; Lyatsky, 1993a). Importantly, questions arose about the applicability in this region of the conventional, simple rigid-plate assumption, as it was shown to be unable to account for all the geological and geophysical peculiarities in some areas (Carbotte et al., 1989; Allan et al., 1993; Davis and Currie, 1993). New solutions were made necessary by new findings and by rediscovery of forgotten old data (see Lyatsky et al., 1991; Lyatsky, 1993b). Without aiming to resolve all the outstanding debates, tectonic implications of the geologic mapping and drilling results in this region are considered in the following chapters. These results are integrated with geochemical and geophysical data. Interpretations of these data, made by this author and by other workers, are verified by geological observations and by geologically plausible extrapolations from these observations. In searching for solutions consistent with all the information, the author has restricted himself to analyzing continental-crust structures along this continental margin. He believes, however, that future models for the offshore regions of the northeastern Pacific should consider the results obtained herein.

Beschreibung / Inhaltsverzeichnis: The subject of the book is an indepth description of the theory and mathematical models behind the application of the Global Positioning System in geodesy and geodynamics. The text has been prepared by leading experts in the field, contributing their particular points of view. Unlike a collection of disjoint papers, the text provides a continous flow of ideas and developments. The mathematical models for GPS measurements are developed in the first half of the book, followed by the description of GPS solutions for geodetic applications on local, regional and global scales.

Beschreibung / Inhaltsverzeichnis: PREFACE The objective of this book is to introduce the practitioner as well as the more theoretically interested reader into the integration problem of spatial information for Geo-lnformation Syslems. Former Get-Information Systems are restricted to 2D space. They realize the integration of spatial information by a conversion of vector and raster representations. This, however. leads to conceptual difficulties because of the two totally different paradigms. Furthermore, the internal topology of the get-objects is not considered. In recent years the processing of 3D information has played a growing role in Get-Information Systems. For example, planning processes for environmental protection or city planning are dependent on 3D data. The integration of spatial reformation will become even more impoaant in the 3D context and with the development of a new generation of open GISs. This book is intended to respond to some of these requirements. It presents a model for the integration of spatial information for 3D Geo-lnformation Systems (3D-GISs). As a precondition for the integration of spatial information, the integration of different spatial representations is emphasized. The model is based on a three-level notion of space that likewise includes the geometry, metrics and the topology of get-objects. The so called extended complex (e-complex) is introduced as a kernel of the model. Its internal basic geometries are the point, the line, the triangle and the tetrahedron. It is shown how a convex e-complex (ce-complex) is generated by the construction of the convex hull and the "'filling" of lines, triangles and tetrahedra, respectively. As we know from computer geometry, this results in substantially simpler geometric algorithms. Additionally, the algorithms gain by the explicit utilization of the topology of the ce-complex. This book also builds a bridge from the GIS to the object-oriented database technology, which will likely become a key technology for the development of a new generation of open Geo-lnformation Systems. In the so-called GEtmodel kernel "building blocks" are introduced that s~mplify the development of software architectures for geo-applications. A geological application in the Lower Rhine Basin shows the practical use of the introduced geometric and topological representation for a 3D-GIS...

Beschreibung / Inhaltsverzeichnis: PREFACE Through the last few decades inversion concepts have become an integral past of experimental data interpretation in several branches of science. In numerous cases similar inversion-like techniques were developed independently in separate disciplines, sometimes based on different lines of reasoning, and sometimes not to the same level of sophistication. This fact was realized early in inversion history. In the seventies and eighties "generalized inversion" and "total inversion" became buzz words in Earth Science, and some even saw inversion as the panacea that would eventually raise all experimental science into a common optimal frame. It is true that a broad awareness of the generality of inversion methods is established by now. On the other hand, the volume of experimental data varies greatly among disciplines, as does the degree of nonlinearity and numerical load of forward calculations, the amount and accuracy of a priori information, and the criticality of correct error propagation analysis. Thus, some clear differences in terminology, philosophy and numerical implementation remain, some of them for good reasons, but some of them simply due to tradition and lack of interdisciplinary communication. In a sense the development of inversion methods could be viewed as an evolution process where it is important that "species" can arise and adapt through isolation, but where it is equally important that they compete and mate afterwards through interdisciplinary exchange of ideas. This book was actually initiated as a proceedings volume of the "Interdisciplinary Inversion Conference 1995", held at the University of Aarhus, Denmark. The aim of this conference was to further the competition and mating part of above-mentioned evolution process, and we decided to extend the effect through this publication of 35 selected contributions. The point of departure is a story about geophysics and astronomy, in which the classical methods of Backus and Gilbert from around 1970 have been picked up by helioseismology. Professor Douglas Gough, who is a pioneer in this field, is the right person to tell this success story of interdisciplinary exchange of research experience and techniques [1-31] (numbers refer to pages in this book). Practitioners of helioseismology like to stress the fact that the seismological coverage on the Sun in a sense is much more complete and accurate than it is on Earth. Indeed we witness vigorous developments in the Backus & Gilbert methods (termed MOLA/SOLA in the helioseismology literature) [32-59] driven by this fortunate data situation. Time may have come for geophysicists to look into helioseismology for new ideas. Seismic methods play a key role in the study of the Earth's lithosphere. The contributions in [79 - 130,139 - 150] relate to reflection seismic oil exploration, while methods for exploration of the whole crust and the underlying mantle axe presented in [131 - 138, 151 - 166]. Two contributions [167 - 185] present the application of inversion for the understanding of the origin of petroleum and the prediction of its migration in sedimentary basins. Inversion is applied to hydrogeophysical and environmental problems [186 - 222], where again developments are driven by the advent of new, mainly electromagnetic, experimental techniques. The role of inversion in electromagnetic investigations of the lithosphere/astenosphere system as well as the ionosphere axe exemplified in [223 - 238]. Geodesy has a fine tradition of sophisticated linear inversion of large, accurate sets of potential field data. This leads naturally to the fundamental study of continuous versus discrete inverse formulations found in [262-275]. Applications of inversion to geodetic satellite data are found in [239 - 261]. General mathematical and computational aspects are mainly found in [262 - 336]. Nonlinearity in weakly nonlinear problems may be coped with by careful modification of lineaxized methods [295 - 302]. Strongly nonlinear problems call for Monte Carlo methods, where the cooling scedule in simulated annealing [303 - 311,139 - 150] is critical for convergence to a useful (local) minimum, and the set of consistent models is explored through importance sampling [89 - 90]. The use of prior information, directly or indirectly, is a key issue in most contributions, ranging from Bayesian formulations based a priori covariances e.g. [98 - 112,122 - 130, 254 - 261], over more general but also less tractable prior probability densities [79 - 97], to inclusion of specific prior knowledge of shape [284 - 294, 312 - 319]. Given the differences and similarities in approach, can we benefit from exchange of ideas and experience? In practice ideas and experience seldom jump across discipline boundaries by themselves. Normally one must go and get them the hard way, for instance by reading and understanding papers from disciplines far from the home ground. Look at the journey into the interdisciplinary cross-field of inversion techniques as a demanding safari into an enormous hunting ground. This book is meant to provide a convenient starting point.

Beschreibung / Inhaltsverzeichnis: PREFACE The four-year period of activity of the Groupement de Recherche 942 (GDR) of the Centre National de la Recherche Scientifique (CNRS) came to an end in December 1993. This GDR was a scientific association grouping research teams from the academic sphere -- i.e. the Unités de Recherches Associées 723 & 724 of the CNRS as well as the Universities of Orléans and Paris-Sud -- and from the industrial world: Elf-Aquitaine Production, TOTAL and the Institut Français du Pétrole (IFP). The aim of the GDR was to understand the processes and the causes of organic carbon fossilization in sediments, especially when they can be modified by environmental conditions such as climate, eustatism, productivity etc., factors which can alko interact. This goal implies the simultaneous study of ancient geological formations (hydrocarbon source rocks from the famous Kimmeridge Clay Formation) and recent Quaternary sediments (the Lac du Bouchet or lake Bouchet maar, Massif Central, France). In the latter case, we benefit from a fine-scale stratigraphical framework as well as a reliable reconstruction of the local and regional environment. This volume is a collection of papers representing oral presentations given on December 7, 1993, at the Société Géologique de France in Paris, during the final meeting of the GDR. These articles thus report the latest developments of the studies carried out under the GDR. However, this is not the first publication of our results, which can be found in the papers referred to in each article. The Kimmeridge Clay Formation was previously studied in 1987, by the Yorkim Group from IFP, Elf-Aquitaine and the British Geological Survey, on the basis of a series of wells drilled across the Cleveland Basin of Yorkshire. In each well, the distribution with depth of the total organic content is cyclic. We have compared some of the organic cycles from two wells (Matron and Ebberston) based on mineralogy, organic and inorganic geochemistry and petrography, at a high resolution scale (centimetric). The main conclusion of this work is that the driving force for organic matter accumulation in the studied cycles was organic phytoplankton productivity. Oxygenation conditions seem to have played a secondary role as a positive feedback action enhancing organic matter storage. Lac du Bouchet is located on the Devès volcanic plateau, 15 km SW of Le Puy en Velay, at an altitude of 1205 m. The depth of the water column is 28 m. The lake has a subcircular shape (1 km in diameter) and a very restricted watershed. This site is exceptionally suitable for research on climate variations and palaeomagnetic field modifications (Euromaars EC Program). The GDR focused on sedimentary organic matter and its relationship to inorganic phases. An important result is that organic matter appears to be a good indicator of palaeoenvironmental reconstructions for over 350 000 years. In addition, the study of early diagenetic reactions in surficial sediments (porewater and solid phase) allows the specification of the processes of organic matter degradation and storage in such an oligothrophic lake.

Beschreibung / Inhaltsverzeichnis: PREFACE In the geologic record, vertical crustal uplift has often resulted in erosional removal of huge thicknesses of sedimentary strata. If the uplift is of a broad regional nature or the uplifted strata remain relatively undeformed and sediments deposited after the uplift are not preserved, the magnitude of uplift and subsequent erosion may be difficult to quantify. This may lead to misinterpretation or omission of chapters of geologic history of a region. Fortunately, a number of indirect methods can be used to infer the thicknesses of missing strata and reconstruct the geologic history. Our book titled "Thick Post-Devonian Sediment Cover Over New York State: Evidence from Fluid-Inclusion, Organic Maturation, Clay Diagenesis and Stable Isotope Studies" uses four techniques of paleotemperature measurements in sedimentary rocks in order to determine burial depths of the existing Paleozoic strata in New York State. Since every technique has its own analytical and interpretative uncertainties, the use of four techniques allowed us to place a better constraint on our results. We show how regionally extensive paleotemperature data can be used to estimate the thicknesses of strata lost from an uplifted sedimentary basin. We also provide a tentative tectonic-, paleogeographic- and depositional history of New York State after the Devonian when the missing strata were deposited...

Beschreibung / Inhaltsverzeichnis: Introduction / Tomotoshi Okaichi / pp. 3-5 --- Seto Inland Sea—Historical Background / Tetsuo Yanagi and Tomotoshi Okaichi / pp. 9-14 --- Biological Productivity of the Lower Trophic Levels of the Seto Inland Sea / Hiroaki Hashimoto, Toshiya Hashimoto, Osamu Matsuda, Kuninao Tada, Kyoichi Tamai, Shin-ichi Uye and Tamiji Yamamoto / pp. 17-58 --- Fisheries Production / Tatsuki Nagai and Yasuki Ogawa / pp. 61-94 --- The Preservation and Creation of Fisheries Grounds / Tetsuo Yanagi / pp. 97-119 --- Strategies for Reduction of Nutrient Loads from the Land / Masahiko Sekine and Masao Ukita / pp. 123-158 --- The Relationship between the Fishery Industry and Environmental Evaluation of the Seto Inland Sea / Hidenori Niizawa, Ken'ichi Nakagami and Kazuhisa Oba / pp. 161-185 --- Legal System and Coastal Management / Mitsuru Nakayama / pp. 189-214 --- Synthesis and Proposal / Tetsuo Yanagi and Tomotoshi Okaichi / pp. 217-219 --- Comparison of the Seto Inland Sea with Other Enclosed Seas from Around the World / Hidetaka Takeoka / pp. 223-247 --- Red Tides in the Seto Inland Sea / Tomotoshi Okaichi / pp. 251-304 --- Law Concerning Special Measures for Conservation of the Environment of the Seto Inland Sea / pp. 307-317 --- International EMECS Center International Center for the Environmental Manage ment of Enclosed Coastal Sea / pp. 321-325

Beschreibung / Inhaltsverzeichnis: Induced seismic events are of high scientific and economic significance. They are the result of human activities interacting with regional and local tectonics, changing the local crustal stress state by mining, extraction of rock masses, injection of fluids into the rock massif, and by changing the surface loading and pore pressure state near large reservoirs. Within Europe the study of induced seismic events has a long tradition and international scientific organizations have actively stimulated the co-operation in this field. During its General Assembly in September 1994, the European Seismological Society organized the symposium "Induced Seismic Events". The focus of this symposium was concentrated on induced events in central and eastern Europe, as well as in the former Soviet Union. The major contributions to the symposium, and also some Chinese, Canadian, and South African results are presented here. Case studies as well as data analyses and methodological studies are included. Seismologists and specialists working in the field of geohazard prevention will find much information in this volume that is pertinent to their work.

Beschreibung / Inhaltsverzeichnis: Plate tectonics has significantly broadened our view of the dynamics of continental evolution, involving both the processes currently active at the surface and those extending deep into the interior of the Earth. Seismic anisotropy provides some of the most diagnostic evidence for mapping past and present deformation of the entire crustmantle system. This volume contains papers presented originally at an international workshop at the Chateau of Trest in the Czech Republic in 1996. This workshop brought together geophysicists and geologists who work in the field of observational and theoretical seismology, mineral and rock physics, gravity studies and geodynamic modelling. Topics include large-scale anisotropy of the Earth's mantle, mantle heterogeneity vs. anisotropy 3-D velocity and density structures and inferences on mantle dynamics, mineral and rock physics studies, and mathematical aspects of complex wave propagation.

Beschreibung / Inhaltsverzeichnis: This topical volume focuses on the most recent advances that have been achieved in relevant fields of research of nuclear test ban monitoring, including seismology, infrasound- and hydro-acoustics, as well as nuclear physics and atmospheric backtracking. This research has been presented during the special sessions on "Research and Development in Nuclear Explosion Monitoring" convened during the 2007 and 2008 General Assemblies of the European Geosciences Union (EGU). The special sessions were introduced after the Preparatory Commission for the Comprehensive Nuclear Test-Ban Treaty Organization (CTBTO Prepcom) had convened a scientific symposium in 2006 on "CTBT: Synergies with Science 1996-2006 and beyond" marking the tenth anniversary of the United Nations General Assembly’s adoption of the CTBT Treaty. With regard to the seismo-acoustic fields several papers provide important updates on advances made in these fields since publication of ‘Monitoring the Comprehensive Nuclear-Test-Ban Treaty’ (see PAGEOPH topical volumes 158-159, 2001-2002). Moreover, this topical volume expands on these publications by including radionuclide and noble gas monitoring, as well as atmospheric transport modeling. In these two areas, significant progress has been made in recent years. Two papers studying the 2006 North Korean nuclear test elucidate how progress made in the relevant fields has allowed for a good understanding on the characteristics of this underground nuclear test.

Beschreibung / Inhaltsverzeichnis: PREFACE There can be little doubt that estuarine, coastal and shelf circulation modeling will assume increasing importance in the immediate future, as we work through the implications of industrialization for oceanic systems. These issues will place new and serious operational demands on available models, and the rapid increase in computational power we now enjoy makes it possible to respond with detailed simulations in many categories. As a result, we are witnessing an explosive growth in the quantity of model-generated information. Lacking, however, is a concomitant increase in its quality or even in quality control procedures. A single simulation exercise is easily capable of generating gigabytes of output in a matter of hours. Most of the data will necessarily go unexamined by its progenitors. Yet it is highly likely that disks full of simulation output will be used extensively as learning tools for students and researchers, as criteria for engineering design, as a basis for operational decision-making, and in the formulation of public policy. The purpose of this volume is to assemble and present what is known about the intrinsic quality of simulation output: its "correctness" for various purposes. We have operated on the twin premises that (1) every simulation has some intrinsic value and (2) every simulation has serious drawbacks. Between these two extremes lies a vast gulf of uncertainty and potential error, which must be bridged in a professional way if modeling is to achieve its potential in the coastal ocean. This is the basic challenge put to the authors of this volume. Essentially we seek to describe and consolidate approaches, theories, and practices for extracting information from models, and to understand the limits of their proper use. We have focused on quantitative approaches to the problem, from diverse physical and mathematical perspectives. Rather than pursuing abstract, philosophical analyses, we have sought contributions reflecting contemporary practice in government, academic, engineering, and research units where frontier model development is taking place. In a similar spirit, we have avoided imposing linguistic norms among authors, which we view as unproductive at this time. Instead, we have let the authors describe their approaches to this multi-faceted problem in their own terms, subject only to standards of clarity of expression. We are especially pleased to have balanced representation from European and North American authors. This volume was initially conceived at an informal workshop in Brussels, convened by our great friend and colleague, the late Bruno M. Jamart. That event first brought several of the contributing authors together over the skill assessment theme, and seeded a mutual vision of the present work. Bruno's energy, insight, integrity, collegiality, and boundless spirit has been an inspiration to all who knew and worked with him. His untimely death in 1990 represents a great loss which is deeply and widely felt. In his memory we dedicate this volume, a humble memorial to a great spirit and friend.

Beschreibung / Inhaltsverzeichnis: The global financial crisis of 2008–09 did not just change the global economic order. It also changed the way we think about that order. Principles and practices that were once accepted wisdom are now in doubt or discredited. New, fundamental questions opened. And the search for answers has barely begun. For the developing world, that conceptual uncertainty is particularly uncomfortable—through a mix of good policies and good luck, they had begun to achieve real progress. Will all that now be derailed? What does the new horizon bring to them? Can they find new policy ideas that will turn the shock of the crisis into a final run toward "developed" status? How does the future look when seen from various geographic regions? Those are the kind of questions that we asked, in the summer of 2010, to some 40 development professionals working at the World Bank. This book is an unfiltered collection of their views. As seasoned practitioners in the leading development institution, they have a unique perspective from which to visualize, we would dare say "to sense", what may be coming. Some of them look at the big picture of the role that the developing world is about to play, and how it will play it. Others walk us through the conceptual links around specific issues that will affect that world—say, the likely evolution of macro-financial regulation. And others take us to continents and countries, teach us about their realities, and tell us how things will differ in the coming years. Put together, they paint a picture of reasoned optimism.

Beschreibung / Inhaltsverzeichnis: Global warming and changes in climate will have severe and lasting impacts on national efforts to alleviate poverty and promote sustainable development. Some of the world s poorest countries and communities are the most vulnerable and are already suffering the consequences. Yet often these countries are rich in natural capital, ecosystems, and biodiversity that can contribute to solutions as they can to climate change. Biodiversity is the foundation and mainstay of agriculture, forests, and fisheries. Biological resources provide the raw materials for livelihoods, agriculture, medicines, trade, tourism, and industry. Forests, grasslands, freshwater, and marine and other natural ecosystems provide a range of services, often not recognized in national economic accounts but vital to human welfare: regulating water flows and water quality, flood control, pollination, decontamination, carbon sequestration, soil conservation, and nutrient and hydrological cycling. Current efforts to address climate change focus mainly on reducing emissions of greenhouse gases, mainly through cleaner energy strategies, and on attempting to reduce vulnerability of the communities at risk by improving infrastructure to meet new energy and water needs. This book book sets out a compelling argument for including ecosystem-based approaches to mitigation and adaptation as a third essential pillar in national strategies to address climate change. Such ecosystem-based strategies can offer cost-effective, proven and sustainable solutions contributing to, and complementing, other national and regional adaptation strategies.

Beschreibung / Inhaltsverzeichnis: Our understanding of calcium carbonate precipitation within freshwater carbonate systems is being revolutionized by new quantitative approaches at both field and laboratory scale. These systems cover a diverse range of topical research areas including tufas, speleothems, stromatolites and microbial processes. Progress by various international research groups has been impressive, with major contributions to such areas as climate change, absolute dating, carbon sequestration, and biofilm construction and precipitation. A diverse sample of interrelated research is presented that provides a tantalizing glimpse of the interplay between microbial, geochemical and physical processes that control the development of tufas and speleothems. This volume will provide a cross-disciplinary platform that will stimulate further exchanges about new concepts, methodologies and interpretations associated with freshwater carbonates. In particular, it will help reinforce the importance of cross-discipline research: the driving force behind the new field of Geobiology.

Beschreibung / Inhaltsverzeichnis: Governments often pursue a variety of economic, social and political objectives through their allocation policies that go beyond the maximization of the net present value of the economic rent. The optimal allocation policy depends on a range of country specific and exogenous factors. Despite the variety of factors influencing optimal design, most countries use similar solutions. In particular, when auctions or administrative procedures are used, most governments opt for simple simultaneous multi-object sealed-bid rounds. While this may appear to be paradoxical, there is a practical explanation. It is true that more complex bidding forms might increase rent capture at bidding. However, the potential marginal gain is often limited, owing to most E&P projects’ high level of uncertainty and risk. In addition market mechanisms, such as joint bidding and secondary markets, and the fiscal regime are widely used in the petroleum sector to correct inefficiency at the time of allocation.

Beschreibung / Inhaltsverzeichnis: During the last three decades geosciences and geo-engineering were influenced by two essential scenarios: First, the technological progress has changed completely the observational and measurement techniques. Modern high speed computers and satellite based techniques are entering more and more all geodisciplines. Second, there is a growing public concern about the future of our planet, its climate, its environment, and about an expected shortage of natural resources. Mathematics concerned with geoscientific problems, i.e., Geomathematics, is becoming increasingly important. The "Handbook of Geomathematics" as a central reference work in this area comprises the following scientific fields: (I) observational and measurement key technologies; (II) modelling of the system Earth (geosphere, cryosphere, hydrosphere, atmosphere, biosphere); (III) analytic, algebraic, and operator-theoretic methods; (IV) statistical and stochastic methods; (V) computational and numerical analysis methods; (VI) historical background and future perspectives.

Beschreibung / Inhaltsverzeichnis: This report synthesizes knowledge about the effects of natural hazards on human welfare, particularly in its economic aspects. It is a remarkable combination of case studies, data on many scales, and the application of economic principles to the problems posed by earthquakes, abnormal weather, and the like. It provides a deep understanding of the relative roles of the market, government intervention, and social institutions in determining and improving both the prevention and the response to hazardous occurrences. The report looks at disasters primarily through an economic lens. Economists emphasize self-interest to explain how people choose the amount of prevention, insurance, and coping. But lenses can distort as well as sharpen images, so the report also draws from other disciplines: psychology to examine how people may misperceive risks, political science to understand voting patterns, and nutrition science to see how stunting in children after a disaster impairs cognitive abilities and productivity as adults much later. Peering into the future, the report shows that growing cities will increase exposure to hazards, but that vulnerability will not rise if cities are better managed. The intensities and frequencies of hazards in the coming decades will change with the climate, and the report examines this complicated and contentious subject, acknowledging all the limitations of data and science.

Beschreibung / Inhaltsverzeichnis: Knowledge, Networks and Nations surveys the global scientific landscape in 2011, noting the shift to an increasingly multipolar world underpinned by the rise of new scientific powers such as China, India and Brazil; as well as the emergence of scientific nations in the Middle East, South-East Asia and North Africa. The scientific world is also becoming more interconnected, with international collaboration on the rise. Over a third of all articles published in international journals are internationally collaborative, up from a quarter 15 years ago. Collaboration is increasing for a variety of reasons. Enabling factors such as advances in communication technology and cheaper travel have played a part, but the primary driver of most collaboration is individual scientists. In seeking to work with the best of their peers and to gain access to complementary resources, equipment and knowledge, researchers fundamentally enhance the quality and improve the efficiency of their work. Today collaboration has never been more important. With human society facing a number of wide-ranging and interlinked ‘global challenges’ such as climate change, food security, energy security and infectious disease, international scientific collaboration is essential if we are to have any chance of addressing the causes, or dealing with the impacts, of these problems. Through a few selected case studies, we examine the achievements of some of the current efforts to tackle these challenges, discuss problems they have faced, and highlight important lessons their experience has to offer similar initiatives. Knowledge, Networks and Nations, in cooperation with Elsevier, was led by a high-level Advisory Group of leaders and experts in international science and science policy, chaired by Sir Chris Llewellyn Smith FRS, Director of Energy Research at the University of Oxford and former Director General of CERN, and drew on evidence, analysis and extensive consultation with scientists and policymakers from around the world. It makes 5 major recommendations: 1. Support for international science should be maintained and strengthened 2. Internationally collaborative science should be encouraged, supported and facilitated 3. National and international strategies for science are required to address global challenges 4. International capacity building is crucial to ensure that the impacts of scientific research are shared globally 5. Better indicators are required in order to properly evaluate global science

Beschreibung / Inhaltsverzeichnis: Climate change is beginning to have effects on climate, weather and resource availability in ways that need to be anticipated when planning for the future. In particular, changes in rainfall patterns and temperature may impact the intensity or schedule of water availability. Also the retreat of tropical glaciers, the drying of unique Andean wetland ecosystems, as well as increased weather variability and weather extremes will affect water regulation. These changes have the potential to impact the energy and other sectors, such as agriculture, and could have broader economic effects. Anticipating the impacts of climate change is a new frontier. There are few examples of predictions of the impact of climate change on resource availability and even fewer examples of the applications of such predictions to planning for sustainable economic development. However, having access to an effective methodology would allow planners and policy makers to better plan for adaptation measures to address the consequences of climate change on the power and water sectors. This report presents a summary of the efforts to develop methodological tools for the assessment of climate impacts on surface hydrology in the Peruvian Andes. It is targeted to decision makers in Peru and in other countries to give them guidance on how to choose available and suitable tools and make an assessment of climate impacts on water regulation.

Beschreibung / Inhaltsverzeichnis: This study from the Independent Evaluation Group draws lessons for development and climate change mitigation from the World Bank Group’s far-reaching portfolio of projects in energy, forestry, transport, coal power, and technology transfer. Reviewing what has worked, what hasn’t, and why, the evaluation’s key findings include: Energy efficiency can offer countries direct economic returns that dwarf those of most other development projects, while also reducing greenhouse gas emissions. Tropical forest protected areas, on average, significantly reduce tropical deforestation, preserving carbon and biodiversity. Deforestation rates are lower in areas that allowed sustainable use by local populations than in strictly protected areas. Deforestation rates were lowest of all in indigenous forest areas. For renewable energy projects, long-duration loans have been important in making projects financially viable.. But at prevailing carbon prices, carbon offset sales had little impact on most renewable energy projects’ rate of returns, and did not address investors’ need for up-front capital. Technology transfer – broadly understood to include diffusion of technical and financial innovations related to low-carbon development – has worked well when the logic of piloting and demonstration is well thought out, and when grants are used to mitigate the risk of pioneering efforts.

Beschreibung / Inhaltsverzeichnis: Despite agreement on first-order features and mechanisms, critical aspects of the origin and evolution of the Tibetan Plateau, such as the exact timing and nature of collision, the initiation of plateau uplift, and the evolution of its height and width, are disputed, untested or unknown. This book gathers papers dealing with the growth and collapse of the Tibetan Plateau. The timing, the underlying mechanisms, their interactions and the induced surface shaping, contributing to the Tibetan Plateau evolution are tightly linked via coupled and feedback processes. We present interdisciplinary contributions allowing insight into the complex interactions between lithospheric dynamics, topography building, erosion, hydrological processes and atmospheric coupling. The book is structured in four parts: early processes in the plateau formation; recent growth of the Tibetan Plateau; mechanisms of plateau growth; and plateau uplift, surface processes and the monsoon.

Beschreibung / Inhaltsverzeichnis: Papers from an International Conference on Asymptotic Methods in Probability and Statistics, held at Carleton University, Ottawa, Canada, 8-13 July, 1997