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Books > Science & Mathematics > Physics > Applied physics & special topics > Geophysics

Earthquake Precursors - Proceedings of the US-Japan Seminar on Theoretical and Experimental Investigations of Earthquake... Earthquake Precursors - Proceedings of the US-Japan Seminar on Theoretical and Experimental Investigations of Earthquake Precursors (Paperback, Softcover reprint of the original 1st ed. 1978)
C. Kisslinger, Z Suzuki
R5,788 Discovery Miles 57 880 Ships in 10 - 15 working days

Physical and chemical studies of the earth and planets along with their sur roundings are now developing very rapidly. As these studies are of essentially international character, many international conferences, symposia, seminars and workshops are held every year. To publish proceedings of these meetings is of course important for tracing development of various disciplines of earth and plane tary sciences though publishing is fast getting to be an expensive business. It is my pleasure to learn that the Center for Academic Publications Japan and the Japan Scientific Societies Press have agreed to undertake the publication of a series "Advances in Earth and Planetary Sciences" which should certainly become an important medium for conveying achievements of various meetings to the aca demic as well as non-academic scientific communities. It is planned to publish the series mostly on the basis of proceedings that appear in the Journal of Geomagnetism and Geoelectricity edited by the Society of Terrestrial Magnetism and Electricity of Japan, the Journal of Physics of the Earth by the Seismological Society of Japan and the Volcanological Society of Japan, and the Geochemical Journal by the Geochemical Society of Japan, although occasional volumes of the series will include independent proceedings. Selection of meetings, of which the proceedings will be included in the series, will be made by the Editorial Committee for which I have the honour to work as the General Editor."

Global Precipitations and Climate Change (Paperback, Softcover reprint of the original 1st ed. 1994): Michel Desbois, Francoise... Global Precipitations and Climate Change (Paperback, Softcover reprint of the original 1st ed. 1994)
Michel Desbois, Francoise Desalmand
R3,015 Discovery Miles 30 150 Ships in 10 - 15 working days

In regard to global change, emphasis is generally placed on the increase in global temperature, but large changes in the distribution of precipitation are also likely to occur. Such changes have been redorded in the past by paleoclimatological studies or in the field of climatology. Different approaches to monitoring and forecasting the evolution of climate-scale precipitation are reviewed by paleoclimatologists, hydrologists, satellite meteorologists, and climate modellers.

Seismic Wave Propagation and Scattering in the Heterogeneous Earth : Second Edition (Hardcover, 2nd ed. 2012): Haruo Sato,... Seismic Wave Propagation and Scattering in the Heterogeneous Earth : Second Edition (Hardcover, 2nd ed. 2012)
Haruo Sato, Michael C Fehler, Takuto Maeda
R7,895 Discovery Miles 78 950 Ships in 10 - 15 working days

Seismic waves - generated both by natural earthquakes and by man-made sources - have produced an enormous amount of information about the Earth's interior. In classical seismology, the Earth is modeled as a sequence of uniform horizontal layers (or spherical shells) having different elastic properties and one determines these properties from travel times and dispersion of seismic waves. The Earth, however, is not made of horizontally uniform layers, and classic seismic methods can take large-scale inhomogeneities into account. Smaller-scale irregularities, on the other hand, require other methods. Observations of continuous wave trains that follow classic direct S waves, known as coda waves, have shown that there are heterogeneities of random size scattered randomly throughout the layers of the classic seismic model. This book focuses on recent developments in the area of seismic wave propagation and scattering through the randomly heterogeneous structure of the Earth, with emphasis on the lithosphere. The presentation combines information from many sources to present a coherent introduction to the theory of scattering in acoustic and elastic materials and includes analyses of observations using the theoretical methods developed. The second edition especially includes new observational facts such as the spatial variation of medium inhomogeneities and the temporal change in scattering characteristics and recent theoretical developments in the envelope synthesis in random media for the last ten years. Mathematics is thoroughly rewritten for improving the readability. Written for advanced undergraduates or beginning graduate students of geophysics or planetary sciences, this book should also be of interest to civil engineers, seismologists, acoustical engineers, and others interested in wave propagation through inhomogeneous elastic media.

Physics of Active Galactic Nuclei - Proceedings of the International Conference, Heidelberg, 3-7 June 1991 (Paperback,... Physics of Active Galactic Nuclei - Proceedings of the International Conference, Heidelberg, 3-7 June 1991 (Paperback, Softcover reprint of the original 1st ed. 1992)
Wolfgang J. Duschl, Stefan J. Wagner
R3,125 Discovery Miles 31 250 Ships in 10 - 15 working days

The physical processes driving the different manifestations of the phe nomenon of active galactic nuclei have been studied extensively during the last decade. A major obstacle in all attempts to understand the relevant pro cesses has always been the wide range of frequencies over which significant fractions of the total power are emitted. During the last decade, orbiting telescopes and instrumental improvements for ground-based instrumenta tion provided the means for major advancements on the observational side. The organizers felt that it was timely to organize a meeting to discuss the impact of this new situation on the understanding of the relevant physical processes. More then 400 astrophysicists were interested in participating in the meeting, in spite of the constraints on overseas travel which were imposed in early 1991. Unfortunately only 220 participants could be hosted by the Max-Planck-Haus, the site of the 1991 Heidelberg conference. The meet ing was organized by Sonderforschungsbereich 328 "Evolution of Galaxies". During 5 sessions, most of which lasted for one day each, 47 invited and con tributed talks and 150 poster papers were given, most, but not all, of which are included in these proceedings. With a few exceptions the order of the written texts follows that of the oral contributions during the meeting. The arrangement of posters into the five sections was not always unambiguous. We hope to have placed them in the most appropriate sections, in which they are listed in alphabetical order.

Mathematical Aspects of Natural Dynamos (Paperback): Emmanuel Dormy, Andrew M. Soward Mathematical Aspects of Natural Dynamos (Paperback)
Emmanuel Dormy, Andrew M. Soward
R1,332 Discovery Miles 13 320 Ships in 12 - 17 working days

Although the origin of Earth's and other celestial bodies' magnetic fields remains unknown, we do know that the motion of electrically conducting fluids generates and maintains these fields, forming the basis of magnetohydrodynamics (MHD) and, to a larger extent, dynamo theory. Answering the need for a comprehensive, interdisciplinary introduction to this area, Mathematical Aspects of Natural Dynamos provides a foundation in dynamo theory before moving on to modeling aspects of natural dynamos. Bringing together eminent international contributors, the book first introduces governing equations, outlines the kinematic dynamo theory, covers nonlinear effects, including amplitude saturation and polarity reversals, and discusses fluid dynamics. After establishing this base, the book describes the Earth's magnetic field and the current understanding of its characteristics. Subsequent chapters examine other planets in our solar system and the magnetic field of stars, including the sun. The book also addresses dynamo action on the large scale of galaxies, presents modeling experiments of natural dynamos, and speculates about future research directions. After reading this well-illustrated, thorough, and unified exploration, you will be well prepared to embark on your own journey through this fascinating area of research.

The Cluster Active Archive - Studying the Earth's Space Plasma Environment (Paperback, 2010 ed.): Harri Laakso, Matthew... The Cluster Active Archive - Studying the Earth's Space Plasma Environment (Paperback, 2010 ed.)
Harri Laakso, Matthew Taylor, C. Philippe Escoubet
R8,627 Discovery Miles 86 270 Ships in 10 - 15 working days

Since the year 2000 the ESA Cluster mission has been investigating the small-scale structures and processes of the Earth's plasma environment, such as those involved in the interaction between the solar wind and the magnetospheric plasma, in global magnetotail dynamics, in cross-tail currents, and in the formation and dynamics of the neutral line and of plasmoids. This book contains presentations made at the 15th Cluster workshop held in March 2008. It also presents several articles about the Cluster Active Archive and its datasets, a few overview papers on the Cluster mission, and articles reporting on scientific findings on the solar wind, the magnetosheath, the magnetopause and the magnetotail.

Geophysics III / Geophysik III - Part I / Teil I (Paperback, Softcover reprint of the original 1st ed. 1966): Julius Bartels Geophysics III / Geophysik III - Part I / Teil I (Paperback, Softcover reprint of the original 1st ed. 1966)
Julius Bartels
R2,981 Discovery Miles 29 810 Ships in 10 - 15 working days

0 apparent decrease from the 56 Degrees - 58 Degrees zone to the 58 Degrees -60 zone is due to the lack of data in that region. The lower diagrams seem to indicate that the number of auroras seen in the northermost region (58 Degrees -60 Degrees) varies relatively little throughout the year, but at lower latitudes during equinoctial periods the belt in which overhead auroras are seen becomes, on the average, broad. Such a study must be supplemented in the future, particularly in the regions to the north of gm lat. 58 Degrees, by all-sky camera data. d) Sunspot cycle. It has long been suggested that the main belt of auroras contracts during periods of low sunspot number; and conversely, at times of large sunspot number, the radius of the main belt is enlarged, moving towards lower gm latitudes. Observing auroras at a station to the south of the (northern) auroral zone, the appearance frequency of auroras increases with increase of the sunspot number (d. MEINEL, NEGAARD and CHAMBERLAIN 1954 [50J; see also Sect. 32a and Fig. 51). However, no detailed study of the sunspot cycle variation of the auroral distribution has yet been made in any systematic way. It is expected that iso auroral diagrams will be constructed from data obtained during the I QSY, which will enable us to compare them with the IGY isoauroral diagrams, such as that produced by FELDSTEIN and SOLOMATINA (1960 [18J). SO far, the information available on this subject is fragmentary.

Atmospheric Electrodynamics (Paperback, Softcover reprint of the original 1st ed. 1984): H. Volland Atmospheric Electrodynamics (Paperback, Softcover reprint of the original 1st ed. 1984)
H. Volland
R1,531 Discovery Miles 15 310 Ships in 10 - 15 working days

This book resulted from lectures which I gave at the Universities of Kyoto, Cologne, and Bonn. Its objective is to summarize in a unifying way two other wise rather separately treated subjects of atmospheric electrodynamics: elec tric fields of atmospheric origin, in particular thunderstorm phenomena and related problems on the one hand, and magnetic fields, in particular those which are associated with electric currents of upper atmospheric origin, on the other. Geoelectricity and geomagnetism were not always considered as be longing to quite different fields of geophysics. On the contrary, they were re cognized by the physicists of the 19th and the beginning of the 20th century as two manifestations of one and the same physical phenomenon, which we pre sently refer to as electromagnetic fields. This can still be visualized from the choice of names of scientific journals. For instance, there still exists the Japanese Journal of Geomagnetism and Geoelectricity, and the former name of the present American Journal of Geophysical Research was Terrestrial Magnetism and Atmospheric Electricity. Whereas geomagnetism became the root of modern magnetospheric phys ics culminating in the space age exploration of the earth's environment, geo electricity evolved as a step-child of meteorology. The reason for this is clear. The atmospheric electric field observed on the ground reflects merely the local weather with all its frustrating unpredictability. The variable part of the geomagnetic field, however, is a useful indicator of ionospheric and magneto spheric electric current systems."

MHD Flows in Compact Astrophysical Objects - Accretion, Winds and Jets (Paperback, 2010 ed.): Vasily S. Beskin MHD Flows in Compact Astrophysical Objects - Accretion, Winds and Jets (Paperback, 2010 ed.)
Vasily S. Beskin
R3,769 Discovery Miles 37 690 Ships in 10 - 15 working days

Accretion flows, winds and jets of compact astrophysical objects and stars are generally described within the framework of hydrodynamical and magnetohydrodynamical (MHD) flows. Analytical analysis of the problem provides profound physical insights, which are essential for interpreting and understanding the results of numerical simulations. Providing such a physical understanding of MHD Flows in Compact Astrophysical Objects is the main goal of this book, which is an updated translation of a successful Russian graduate textbook. The book provides the first detailed introduction into the method of the Grad-Shafranov equation, describing analytically the very broad class of hydrodynamical and MHD flows. It starts with the classical examples of hydrodynamical accretion onto relativistic and nonrelativistic objects. The force-free limit of the Grad-Shafranov equation allows us to analyze in detail the physics of the magnetospheres of radio pulsars and black holes, including the Blandford-Znajek process of energy extraction from a rotating black hole immersed in an external magnetic field. Finally, on the basis of the full MHD version of the Grad-Shafranov equation the author discusses the problems of jet collimation and particle acceleration in Active Galactic Nuclei, radio pulsars, and Young Stellar Objects. The comparison of the analytical results with numerical simulations demonstrates their good agreement. Assuming that the reader is familiar with the basic physical and mathematical concepts of General Relativity, the author uses the 3+1 split approach which allows the formulation of all results in terms of physically clear language of three dimensional vectors. The book contains detailed derivations of equations, numerous exercises, and an extensive bibliography. It therefore serves as both an introductory text for graduate students and a valuable reference work for researchers in the field.

Coal-Bearing Depositional Systems (Paperback, Softcover reprint of the original 1st ed. 1992): Claus F. K. Diessel Coal-Bearing Depositional Systems (Paperback, Softcover reprint of the original 1st ed. 1992)
Claus F. K. Diessel
R3,098 Discovery Miles 30 980 Ships in 10 - 15 working days

The author presents examples of coal deposits two different continents: from the European Carboniferous and the Permian Gondwana sequence of Australia. The organic and petrographic composition of the coal content of palaeo-environmentally well defined groups of sediments allow the discrimination of two coal facies indices as suitable indicators for distinct settings. Combining the analytical methods of coal petrography, sedimentology and sequence stratigraphy an integrated view of coal formation is attained.

Observation of the Continental Crust through Drilling I - Proceedings of the International Symposium held in Tarrytown, May... Observation of the Continental Crust through Drilling I - Proceedings of the International Symposium held in Tarrytown, May 20-25, 1984 (Paperback, Softcover reprint of the original 1st ed. 1985)
C. Barry Raleigh
R2,998 Discovery Miles 29 980 Ships in 10 - 15 working days

Drilling deep into the earth holds a fascination for earth scientists derived in part from the fact that the drill hole is the ultimate test of a hypothesis. When surface exploration methods have been fully uti lized and all the geological inferences drawn about the structure be neath the surface, we must finally drill to sample directly the third dimension of the crust of the earth. The drill is thus the tool of choice of the energy and minerals re sources industry. Because of high cost, drilling has been only sparing ly used for solving fundamental problems in the earth sciences. But now, having used the quite sophisticated methodology of exploration geophysics, the exciting structural detail emerging from seismic re flection profiling in particular has led several nations to begin a major program of scientific drilling to solve some of the major prGb lems in the earth sciences. Hhat is described in this volume are the blueprints for national re search programs in France, the Federal Republic of Germany, Japan and the United States. The Soviet Union has already embarked on a major drilling effort, the results of which are soon to be published. Results, of course, are still few, and this first volume is more concerned with the problems to be solved."

Wavelets - Time-Frequency Methods and Phase Space (Paperback, Softcover reprint of the original 1st ed. 1989): Jean-Michel... Wavelets - Time-Frequency Methods and Phase Space (Paperback, Softcover reprint of the original 1st ed. 1989)
Jean-Michel Combes, Alexander Grossmann, Philippe Tchamitchian
R2,981 Discovery Miles 29 810 Ships in 10 - 15 working days

The last two subjects mentioned in the title "Wavelets" are so well established that they do not need any explanations. The first is related to them, but a short introduction is appropriate since the concept of wavelets emerged fairly recently. Roughly speaking, a wavelet decomposition is an expansion of an arbitrary function into smooth localized contributions labeled by a scale and a position pa rameter. Many of the ideas and techniques related to such expansions have existed for a long time and are widely used in mathematical analysis, theoretical physics and engineering. However, the rate of progress increased significantly when it was realized that these ideas could give rise to straightforward calculational methods applicable to different fields. The interdisciplinary structure (R.c.P. "Ondelettes") of the C.N .R.S. and help from the Societe Nationale Elf-Aquitaine greatly fostered these developments. This conference was held at the Centre National de Rencontres Mathematiques (C.I.R.M) in Marseille from December 14 to 18, 1987 and brought together an interdisciplinary mix of participants. We hope that these proceedings will convey to the reader some of the excitement and flavor of the meeting.

Neutrino Physics - Proceedings of an International Workshop Held in Heidelberg, October 20-22,1987 (Paperback, Softcover... Neutrino Physics - Proceedings of an International Workshop Held in Heidelberg, October 20-22,1987 (Paperback, Softcover reprint of the original 1st ed. 1988)
Hans V. Klapdor, Bogdan Povh
R2,987 Discovery Miles 29 870 Ships in 10 - 15 working days

Neutrinos play an intriguing role in modern physics linking central questions of particle physics, cosmology and astrophysics. The contributions in this book reflect the present status of neutrino physics with emphasis on non-accelerator or beyond-accelerator experiments. Since a nonvanishing neutrino mass would yield an important boundary condition for GUT, SUSY or Superstring models and since neutrinos are the best candidates for dark matter in the universe, the many efforts to look for a neutrino mass, ranging from neutrino oscillation experiments using reactors, accelerators or the sun as neutrino sources, to tritium decay experiments and the search for neutrinoless double beta decay, are described in some detail. One of the sections is devoted to neutrinos from collapsing stars, including the supernova SN 1987 A. Possibilities for detecting cosmological neutrinos are discussed and an outlook to future experiments is given.

The Last Deglaciation: Absolute and Radiocarbon Chronologies (Paperback, Softcover reprint of the original 1st ed. 1992):... The Last Deglaciation: Absolute and Radiocarbon Chronologies (Paperback, Softcover reprint of the original 1st ed. 1992)
Edouard Bard, Wallace S Broecker
R4,521 Discovery Miles 45 210 Ships in 10 - 15 working days

Time is a major factor in Quaternary science. Without a trustworthy chronometer any interpretation of changes in proxy data of stratigraphical origin is on weak ground. In fact, any attempt at a sound reconstruction of timing and rates of past climatic change as well as the response of the biosphere can only be achieved on the basis of a reliable chronology. Moreover, all correlations and comparisons through time on a continental or global scale depend heavily on the reliability of the time-scale used. Therefore the establishment of an absolute time-scale is a fundamental goal. In this contribution we refer to the term "absolute time-scale" as a time-scale consisting of ages determined on the basis of sidereal years. Traditional stratigraphical methods of absolute dating include the Swedish glacial varve chronology, already developed early in this century by De Geer (1912) and since then continuously improved (e.g. Stromberg 1985; Cato 1987). Unfortunately, however, a spatial correlation with other stratigraphies outside Fennoscandia is difficult.

Imaging, Modeling and Assimilation in Seismology (Hardcover): Yong-Gang Li Imaging, Modeling and Assimilation in Seismology (Hardcover)
Yong-Gang Li; Contributions by Hung-Chie Chiu, Elisabeth Cochran, Benchun Duan, Xiao-Bi Xie, …
R8,250 Discovery Miles 82 500 Ships in 10 - 15 working days

This work presents current approaches in geophysical research of earthquakes. A global authorship from top institutions presents case studies to model, measure, and monitor earthquakes. Among others a full-3D waveform tomography method is introduced, as well as propagator methods for modeling and imaging. In particular the earthquake prediction method makes this book a must-read for researchers in the field.

Scalar Wave Theory - Green's Functions and Applications (Paperback, Softcover reprint of the original 1st ed. 1992): John... Scalar Wave Theory - Green's Functions and Applications (Paperback, Softcover reprint of the original 1st ed. 1992)
John Desanto
R2,930 Discovery Miles 29 300 Ships in 10 - 15 working days

This book comprises some of the lecture notes I developed for various one-or two-semester courses I taught at the Colorado School of Mines. The main objective of all the courses was to introduce students to the mathematical aspects of wave theory with a focus on the solution of some specific fundamental problems. These fundamental solutions would then serve as a basis for more complex wave propagation and scattering problems. Although the courses were taught in the mathematics department, the audience was mainly not mathematicians. It consisted of gradu ate science and engineering majors with a varied background in both mathematics and wave theory in general. I believed it was necessary to start from fundamental principles of both advanced applied math ematics as well as wave theory and to develop them both in some detail. The notes reflect this type of development, and I have kept this detail in the text. I believe it essential in technical careers to see this detailed development at least once. This volume consists of five chapters. The first two on Scalar Wave Theory (Chapter 1) and Green's Functions (Chapter 2) are mainly mathematical although in Chapter 1 the wave equation is derived from fundamental physical principles. More complicated problems involving spatially and even temporally varying media are briefly introduced."

Observation of the Continental Crust through Drilling II - Proceedings of the International Symposium held in Seeheim, October... Observation of the Continental Crust through Drilling II - Proceedings of the International Symposium held in Seeheim, October 3-6, 1985 (Paperback, Softcover reprint of the original 1st ed. 1987)
Hans-Jurgen Behr, Francis G. Stehli, Helmut Vidal
R2,950 Discovery Miles 29 500 Ships in 10 - 15 working days

The Second International Symposium on Observation of the Continental Crust Through Drilling (supported by the Alfred Wegener Foundation, the Federal Ministry of Research and Technology, the German Research Society and the Inter-Union Commission on the Lithosphere) took place in Seeheim (Odenwald) and included a discussion on the Continental Deep Drilling Programme of the Federal Republic of Germany. This sym- posium was regarded as the continuation of a course agreed upon in Tarrytown in 1984. Here, the scientific contents and technical con- cepts of the technically complex and expensive experiments of conti- nental drillings were carefully coordinated before the national commit- tees carne to practical decisions. In Seeheim, rather than in Tarrytown, the methods of technical realization were in the foreground, as the results of scientific projects, e. g. , the NAGRA or the Salton Sea Scien* tific Drilling Project, were evaluated, supplementing industrial ultra- deep drilling experience. The presentation and discussion of the Con- tinental Deep Drilling Project of the Federal Republic of Germany was also granted ample scope with nine lectures and sixty posters. The con- tents of the KTB presentation have been summed up in two contributions and included in this volume. The conference centered on three major subjects: The National- Prograrrunes and Aspects of Geoscience: H. Vidal, FRG; H. Riesen- huber, FRG; E. Seibold, FRG; K. Fuchs, FRG; Cl. Megnien, F; R. S. An- drews, USA; F. G. Stehli, USA; E. A. Kozlovsky, USSR; E. V.

Monitoring and Mitigation of Volcano Hazards (Paperback, Softcover reprint of the original 1st ed. 1996): Roberto Scarpa,... Monitoring and Mitigation of Volcano Hazards (Paperback, Softcover reprint of the original 1st ed. 1996)
Roberto Scarpa, Robert I. Tilling
R4,666 Discovery Miles 46 660 Ships in 10 - 15 working days

By the year 2000, the number of people at risk from volcanic hazards is likely to increase to around half a billion. Since 1980, significant advances have been made in volcano monitoring, the data from which provides the sole scientific basis for eruption prediction. Here, internationally renowned and highly experienced specialists provide 25 comprehensive articles covering a wide range of related topics: monitoring techniques and data analysis; modelling of monitoring data and eruptive phenomena; volcanic hazards and risk assessment; and volcanic emergency management. Selected case histories of recent volcanic disasters, such as Mount Pinatubo in the Philippines, demonstrate that effective communication - between scientists, civil authorities, the media and the population at risk - is essential to reducing the danger.

Environmental Geophysics - A Practical Guide (Paperback, Softcover reprint of the original 1st ed. 1995): Dieter Vogelsang Environmental Geophysics - A Practical Guide (Paperback, Softcover reprint of the original 1st ed. 1995)
Dieter Vogelsang
R2,924 Discovery Miles 29 240 Ships in 10 - 15 working days

Applied geophysics were developed to explore the raw materials needed by civilization. Today it is used to investigate the extent and nature of buried contaminated waste and leachates.
The book describes in detail, yet in a simple language, possibilities, advantages and shortcomings of geophysical methods. Case histories from the US and all over the world are discussed and richly illustrated, and cost estimates for geophysical surveys and criteria for the choice of methods and the compilation of tenders are provided.
The book will enable engineers, scientists and lawyers to appraise the possibilities of geophysics in the assessment of environmental risks.

Satellite Systems for Personal and Broadband Communications (Paperback, Softcover reprint of the original 1st ed. 2000): E.... Satellite Systems for Personal and Broadband Communications (Paperback, Softcover reprint of the original 1st ed. 2000)
E. Lutz, M. Werner, A. Jahn
R3,005 Discovery Miles 30 050 Ships in 10 - 15 working days

A scientific overview of current and future satellite systems for mobile and broadband communications. In part I, the fundamentals of geostationary and non-geostationary satellite constellations and the related questions of communications technology are treated. Part II deals with satellite systems for mobile communications and treats several network features as well as their technology, regulation and financing. Part III is devoted to future satellite systems for broadband communications and explains the specialities of satellite communications, particularly on the basis of ATM and TCP/IP. An extensive survey on operating and planned satellite systems completes the book.

Non-Linear Variability in Geophysics - Scaling and Fractals (Paperback, Softcover reprint of the original 1st ed. 1991): D.... Non-Linear Variability in Geophysics - Scaling and Fractals (Paperback, Softcover reprint of the original 1st ed. 1991)
D. Schertzer, S. Lovejoy
R2,969 Discovery Miles 29 690 Ships in 10 - 15 working days

consequences of broken symmetry -here parity-is studied. In this model, turbulence is dominated by a hierarchy of helical (corkscrew) structures. The authors stress the unique features of such pseudo-scalar cascades as well as the extreme nature of the resulting (intermittent) fluctuations. Intermittent turbulent cascades was also the theme of a paper by us in which we show that universality classes exist for continuous cascades (in which an infinite number of cascade steps occur over a finite range of scales). This result is the multiplicative analogue of the familiar central limit theorem for the addition of random variables. Finally, an interesting paper by Pasmanter investigates the scaling associated with anomolous diffusion in a chaotic tidal basin model involving a small number of degrees of freedom. Although the statistical literature is replete with techniques for dealing with those random processes characterized by both exponentially decaying (non-scaling) autocorrelations and exponentially decaying probability distributions, there is a real paucity of literature appropriate for geophysical fields exhibiting either scaling over wide ranges (e. g. algebraic autocorrelations) or extreme fluctuations (e. g. algebraic probabilities, divergence of high order statistical moments). In fact, about the only relevant technique that is regularly used -fourier analysis (energy spectra) -permits only an estimate of a single (power law) exponent. If the fields were mono-fractal (characterized by a single fractal dimension) this would be sufficient, however their generally multifractal character calls for the development of new techniques.

Ice in the Climate System (Paperback, Softcover reprint of the original 1st ed. 1993): W. Richard Peltier Ice in the Climate System (Paperback, Softcover reprint of the original 1st ed. 1993)
W. Richard Peltier
R3,080 Discovery Miles 30 800 Ships in 10 - 15 working days

According to my latest model for the last glacial maximum (LGM) (Grosswald 1988), the Arctic continental margin of Eurasia was glaciated by the Eurasian ice sheet, which consisted of three interconnected ice domes --the Scandinavian, Kara, and East Siberian. The Kara Sea glacier was largely a marine ice dome grounded on the sea's continental shelf. The ice dome discharged its ice in all directions, northward into the deep Arctic Basin, southward and westward onto the mainland of west-central North Siberia, the northern Russian Plain, and over the Barents shelf into the Norwegian-Greenland Sea On the Barents shelf, the Kara ice dome merged with the Scandinavian ice dome. In the Arctic Basin the discharged ice floated and eventually coalesced with the floating glacier ice of the North-American provenance giving rise to the Central-Arctic ice shelf. Along its southern margin, the Kara ice dome impounded the northward flowing rivers, causing the formation of large proglaciallakes and their integration into a transcontinental meltwater drainage system. Despite the constant increase in corroborating evidence, the concept of a Kara ice dome is still considered debatable, and the ice dome itself problematic. As a result, a paleogeographic uncertainty takes place, which is aggravated by the fact that a great deal of existing knowledge, no matter how broadly accepted, is based on ambiguous interpretations of the data, most of which are published in Russian and, therefore, not easily available to western scientists.

Earthquakes at North-Atlantic Passive Margins: Neotectonics and Postglacial Rebound (Paperback, Softcover reprint of the... Earthquakes at North-Atlantic Passive Margins: Neotectonics and Postglacial Rebound (Paperback, Softcover reprint of the original 1st ed. 1989)
Soren Gregersen, Peter W. Basham
R8,698 Discovery Miles 86 980 Ships in 10 - 15 working days

For many years, the two subjects of (1) postglacial rebound and its potential for generating earthquakes and (2) the seismicity of passive continental ml!rgins have been of interest and concern to earth scientists on both sides of the North Atlantic. New data and theoretical interpretations have given rise to vigorous discussions on how much the two phenomena inter-relate and whether a significant controlling factor on seismicity in northeastern North America and Scandinavia is the crustal uplift that has been occurring since the latest ice age. The lack of a good understanding of these phenomena presented a particular problem for engineering seismologists attempting to prepare accurate seismic hazard estimates for facili ties both on land (e. g. , nuclear power stations and radioactive waste repositories) and offshore (e. g. , petroleum production facili ties) . The NATO Advanced Research Workshop programme provided an opportuni ty to bring together a group of relevant geophysicists, geologists and geodesists from both sides of the North Atlantic, and a workshop on "Causes and Effects of Earthquakes at Passive Margins and in Areas of Postglacial Rebound on both Sides of the North Atlantic" was held in Vordingborg, Denmark, 9-13 May 1988. The sup port of the NATO Science Committee is gratefully acknowledged.

Systematic Geomorphology (Paperback, Softcover reprint of the original 1st ed. 1987): Adrian E. Scheidegger Systematic Geomorphology (Paperback, Softcover reprint of the original 1st ed. 1987)
Adrian E. Scheidegger
R1,570 Discovery Miles 15 700 Ships in 10 - 15 working days

To most people, travel is an exciting experience. When one journeys around the world, one is struck by the great variety and beauty of the landscapes that one encounters. The scientific mind, naturally, is not satisfied with admiring the various landscapes, but would like to understand how they were formed. The exact theory of landscape formation is a very com plicated affair, but much can be learnt from accurate observation. The need for the present little book became apparent to the writer during his studies of the mechanics oflandscape formation. It turned out that there was, in fact, no systematic compilation of those surface features of the Earth available, that have to be explained by theory. In effect, even the taxonomic principles that have to be applied in a classification of landscapes have nowhere been clearly stated. Thus, this book is intended to present a pictorial taxonomy of geomorphic features based on the basic principles of landscape genesis, as they have recently been worked out. The pictures have all been taken by the writer himself during many geoscientific studies and travels throughout the world. Some of these pictures had already been used in earlier publications of the writer's."

Vertical Seismic Profiling and Its Exploration Potential (Paperback, Softcover reprint of the original 1st ed. 1985): M.M.... Vertical Seismic Profiling and Its Exploration Potential (Paperback, Softcover reprint of the original 1st ed. 1985)
M.M. Samokhvalov; E.I. Galperin
R4,514 Discovery Miles 45 140 Ships in 10 - 15 working days

The present book is the author's third on the subject of vertical seismic profiling (VSP). Ten years have elapsed since the pUblication of the fIrst book. During this period, VSP has become the principal method of seismic observations in boreholes and the chief method of experimental studies of seismic waves in the real earth. VSP combines borehole studies in the seismic frequency band, well velocity surveys, proximity or aplanatic surveys, all of which previously existed as separate methods. The high effectiveness ofVSP, its great practical value, the express nature and clarity of the results obtained have all contributed towards a very rapid acceptance of the method. In the USSR VSP has been used in an overwhelming majority of areas and is being used increasingly in many foreign countries as well. This has been greatly facilitated by the translation into English and the publication in the U. S. A. by the Society of Exploration Geophysicists of the book Vertical Seismic Profiling (Tulsa, Oklahoma, 1974). As the method has become more familiar, it has attracted growing interest outside the USSR This has been substantiated by the special seminar on VSP (Oklahoma, 1979) which was organized for 22 U. S. companies and universities and presented by the author.

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