ALBERT

Description / Table of Contents: PREFACE The ocean has always been reluctant to reveal its secrets. Its size and the inaccessibility of its deeper regions have made their safeguard a reasonably simple matter with the result that significant misconceptions persisted for many years. Two of the most widespread of these concerned the featureless nature of the sea floor and the silence of the deep ocean. Underwater acoustics has played a key role in discrediting both and in so doing introduced new and exciting developments in oceanography and geophysics. In the years following World War II, echosounders and subbottom profilers based on new active sonar technology, revealed the true nature of the seafloor topography and led to the major advances represented by plate tectonics. Research driven by the requirements of passive sonar, on the other hand, was to demonstrate that the sea was not silent but was characterised by a complex noise spectrum. Many individual mechanisms and sources ranging from man-made, biological and geophysical activity to the intrinsic noise of the sea itself were found to contribute to this spectrum. A major component, which is the subject of this book, was to remain unrecognised to underwater acoustics until noise measurements could be made effectively at very low frequencies, although its presence had been indicated by seismology long before these measurements were possible. By virtue of its geographical isolation in the Southern Ocean, New Zealand has provided an ideal environment for long-range propagation and ambient noise investigations and numerous studies have been reported. Our interest in the subject of this book was aroused initially in the course of one such experiment in 1966. For the first time it had been possible to extend the recording bandwidth to 1 Hz and the improved performance of this new system was anticipated eagerly. However the main purpose of the experiment was nearly aborted by the appearance of a new and unsuspected noise component at frequencies below 10 Hz. Due primarily to technical limitations in the equipment then available, a subsequent programme, designed to identify the properties and origin of the source more clearly, was not productive and was soon abandoned. An opportunity to revisit the problem arose some 10 years later, when the University of Auckland became involved in a major environmental study in support of the development of an offshore gas field in Cook Strait. The technology then available provided an opportunity to examine afresh the relationship between sea state and the seismo-acoustic response generated. An initial trim demonstrated the potential of the site. Accordingly a long-term programme, involving the parallel measurement of the oceanwave field and acoustic response, was undertaken in a series of student research theses. The data so gathered were of sufficiently high quality to ultimately establish wave-wave interactions as the source of the acoustic effects observed and to identify many of its characteristics. This result was soon to be confirmed by other studies. As the noise data accumulated, however, it became apparent that certain refinements to the theories describing the mechanism were required. Our attempts to provide these refinements have been reported in a number of contributions in recent years. The accounts of these and similar contributions by others have unfortunately appeared in the literature in a somewhat disjointed manner, with the result that the evolution of the subject has not been easy to follow. This book attempts to present a more coherent account of the subject and its development. Most of the early experimental and theoretical results from our group have arisen from two key Ph.D. theses, due to Dr. K.C. Ewans and Dr. C.Y. Wu. The painstaking and careful instrumentation development and data analysis provided by Dr. Ewans were critical to the definitive correlation which we were able to establish between wind field, seastate and the acoustic response so generated. Dr. Wu's thesis presented the first phase of our attempt at the resolution of certain key theoretical issues, which were identified in the course of the experimental programme. Both studies owe much to the support of Shell BP Todd Oil Services Ltd., acting for Maui Development Ltd., and to the University of Auckland. The support of the Electricity Corporation of New Zealand Ltd. during a later experimental investigation of the Southern Ocean wave field is also acknowledged...

Description / Table of Contents: 1. Crustal Evolution: East Antarctic Shield --- Archacan Events in Antarctica / L. P. BLACK, J. W. SHERATON and P. D. KINNY / pp. 1-6 --- Metamorphic Evolution of the Sør Rondane Mountains, East Antarctica / M. ASAMI, Y. OSANAI, K. SHIRAISHI and H. MAKIMOTO / pp. 7-16 --- Geochemical Characteristics of Metamorphic Rocks from the Central Sør Rondane Mountains., East Antarctica / Y. OSANAI, K. SHIRAISHI, Y. TAKAHASHI, H. ISHIZUKA, Y. TAINOSHO, N. TSUCHIYA, T. SAKIYAMA and S. KODAMA / pp. 17-28 --- Sm-Nd and Rb-Sr Ages of Metamorphic Rocks from the Sør Rondane Mountains., East Antarctica / K. SHIRAISHI and H. KAGAMI / pp. 29-36 --- Reconnaissance Geochronologic Data on Proterozoic Polymetamorphic Rocks of the Eastern Sør Rondane Mountains, East Antarctica / E. S. GREW, W. I. MANTON, M. ASAMI and H. MAKIMOTO / pp. 37-44 --- Petrochemical Character and Rb-Sr Isotopic Investigation of the Granitic Rocks from the Sør Rondane Mountains, East Antarctica / Y. TAINOSHO, Y. TAKAHASHI, Y. ARAKAWA, Y. OSANAI, N. TSUCHIYA, T. SAKIYAMA and M. OWADA / pp. 45-54 --- Carbon and Oxygen Isotopic Compositions of Marbles from the Sør Rondane Mountains, East Antarctica / N. TSUCHIYA, Y. OSANAI and H. WADA / pp. 55-60 --- 40Ar-39Ar Geochronological Studies on some Paleomagnetic Samples of East Antarctica / Y. TAKIGAMI, M. FUNAKI and K. TOKIEDA / pp. 61-66 --- The First Report of a Cambrian Orogenic Belt in East Antarctica—An Ion Microprobe Study of the Lützow-Holm Complex / K. SHIRAISHI, Y. HIROI, D. J. ELLIS, C. M. FANNING, Y. MOTOYOSHI and Y. NAKAI / pp. 67-74 --- A New Insight of Possible Correlation between the Lützow-Holm Bay Granulites (East Antarctica) and the Sri Lankan Granulites / Y. OGO, Y. HIROI, K. B. N. PRAME and Y. MOTOYOSHI / pp. 75-86 --- Osumilite-Producing Reactions in High Temperature Granulites from the Napier Complex, East Antarctica: Tectonic Implications / B. J. HENSEN and Y. MOTOYOSHI / pp. 87-92 --- Gneisses of the Porthos and Athos Ranges, Northern Prince Charles Mountains, East Antarctica: Constraints on the Prograde and Retrograde P-T Path / D. E. THOST and B. J. HENSEN / pp. 93-102 --- Mineral Reaction Textures in High-Grade Gneisses: Evidence for Contrasting Pressure-Temperature Paths in the Proterozoic Complex of East Antarctica / I. C. W. FITZSIMONS and S. L. HARLEY / pp. 103-112 --- Mode of Occurrence, Geochemistry and Mineral Textures of Mafic to Ultramafic Rocks from the Bolingen Islands, Prydz Bay., East Antarctica / D. E. THOST, Y. MOTOYOSHI and B. J. HENSEN / pp. 113-118 --- The Significance of Reworking, Fluids and Partial Melting in Granulite Metamorphism, East Prydz Bay, Antarctica / S. L. HARLEY, I. C. W. FITZSIMONS, I. S. BUICK and G. WATT / pp. 119-128 --- Stable Isotope Studies of Granulite Facies Metamorphism in the Rauer Group, East Antarctica / I. S. BUICK, S. L. HARLEY and D. MATTEY / pp. 129-136 --- A Late- Proterozoic Extensional-Compressional Tectonic Cycle in East Antarctica / J. D. HOEK, P. H. G. M. DIRKS and C. W. PASSCHIER / pp. 137-144 --- Re-Examination of the Metamorphic Evolution of the Larsemann Hills., East Antarctica / L. REN, Y. ZHAO, X. LIU and T. CHEN / pp. 145-154 --- Geochronology of the Late Granite in the Larsemann Hills, East Antarctica / Y. ZHAO, B. SONG, Y. WANG, L. REN, J. LI and T. CHEN / pp. 155-162 --- The First Study of Upper Mantle Inclusions from the Prince Charles Mountains, East Antarctica / A. V. ANDRONIKOV / pp. 163-173 --- Mafic Igneous Suites in the Lambert Rift Zone / E. V. MIKHALSKY, A. V. ANDRONIKOV and B. V. BELIATSKY / pp. 173-178 --- Granitic Rocks of the Jetty Peninsula, Amery Ice Shelf Area, East Antarctica / W. I. MANTON, E. S. GREW, J. HOFMANN and J. W. SHERATON / pp. 179-190 --- Paleomagnetic and 40Arl/39Ar Dating Studies of the Mawson Charnockite and Some Rocks from the Christensen Coast / M. FUNAKI and K. SAITO / pp. 191-202 --- 2. Crustal Evolution: Transantarctic Mountains and West Antarctica --- Multiple Petrotectonic Events in High-Grade Metamorphic Rocks of the Nimrod Group, Central Transantarctic Mountains, Antarctica / J. W. GOODGE, V. L. HANSEN and S. M. PEACOCK / pp. 203-210 --- Metamorphic Facies of the Ross Orogeny in the Southern Wilson Terrane of Northern Victoria Land, Antarctica / F. TALARICO, M. FRANCESCHELLI, B. LOMBARDO, R. PALMERI, P. C. PERTUSATI, N. RASTELLI and C. A. RICCI / pp. 211-218 --- Metasedimentary Rocks of Western Wilson Terrane (Victoria Land - Oates Land) and Gondwana Connections to Australia / D. N. B. SKININER / pp. 219-226 --- Compressional Causes for the Early Palcozoic Ross Orogen—Evidence from Victoria Land and the Shackleton Range / G. KLEINSCHEMIDT, W. BUGGISCH and T. FLOETTMANN / pp. 227-234 --- Pre-Beacon Tectonic Development of the Transantarctic Mountains / E. STUMP / pp. 235-240 --- Statistical Analysis of Geochemical Patterns in Fine-Grained Permian Mudrocks from the Beardmore Glacier Region, Antarctica / T. C. HORNER and L. A. KRISSEK / pp. 241-248 --- Stratigraphy and Sedimentology of Vertebrate Bone-Bearing Beds in the Triassic (and Jurassic?) Fremouw and Falla Formations, Beardmore Glacier Region., Antarctica / L. A. KRISSEK, T. C. HORNER, D. H. ELLIOT and J. W. COLLINSON / pp. 249-256 --- Early Palcozoic Lamprophyre Dikes of Southern Victoria Land: Geology, Petrology and Geochemistry / B. WU and J. H. BERG / pp. 257-264 --- Crustal Xenoliths from Cape McCormick Crater, Northern Victoria Land / J. H. BERG and B. WU / pp. 265-272 --- Xenoliths from the Volcanic Province of West Antarctica and Implications for Lithospheric Structure and Processes / R. J. WYSOCZANSKI and J. A. GAMBLE / pp. 273-278 --- Geological and Geophysical Exploration in the Northern Ford Ranges, Maric Byrd Land, West Antarctica / B. P. LUYENDYK, S. M. RICHARD, C. H. SMITH and D. L. KIMBROUGH / pp. 279-288 --- Structure and Cooling History of the Fosdick Metamorphic Complex, Marie Byrd Land, West Antarctica / S. M. RICHARD / pp. 289-294 --- Metapelites and Migmatites at the Granulite Facies Transition, Fosdick Metamorphic Complex, Marie Byrd Land, West Antarctica / C. H. SMITH / pp. 295-302 --- 3. Syn- and Post-Breakup of Gondwana --- Mesozoic and Cenozoic Kinematic Evolution of the Transantarctic Mountains / T. J. WILSON / pp. 303-314 --- The West Antarctic Rift System—A Propagating Rift "Captured" by a Mantle Plume? / J. C. BEHRENDT, W. LEMASURIER and A. K. COOPER / pp. 315-322 --- Apatite Fission Track Evidence for Contrasting Thermal and Uplift Histories of Metamorphic Basement Blocks in Western Dronning Maud Land / J. JACOBS, E. HEJL, G. A. WAGNER and K. WEBER / pp. 323-330 --- Early Cretaceous Uplift of the Southern Sentinel. Range, Ellsworth Mountains, West Antarctica / P. G. FITZGERALD and E. STUMP / pp. 331-340 --- Petrologic Comparison of Palcozoic Rocks from the English Coast, Eastern Ellsworth Land, and the Ellsworth Mountains / T. S. LAUDON and C. CRADDOCK / pp. 341-346 --- Provenance of Paleocene Strata, Seymour Island / D. H. ELLIOT, S. M. HOFFMAN and D. E. RIESKE / pp. 347-356 --- Sedimentology of the Miers Bluff Formation, Livingston Island, South Shetland Islands / A. ARCHE, J. LOPEZ-MARTINEZ and E. MARTINEZ DE PISON / pp. 357-362 --- Late Cretaceous and Eocene Palynofloras from Fildes Peninsula, King George Island (South Shetland Islands), Antarctica / L. CAO / pp. 363-370 --- Early Tertiary Palaeoclimate of King George Island, Antarctica—Evidence from the Fossil Hill Flora / H. M. LI / pp. 371-376 --- Modes of Formation and Accretion of Oceanic Material in the Mesozoic Fore-Arc of Central and Southern Alexander Island, Antarctica: A Summary / P. A. DOUBLEDAY and T. H. TRANTER / pp. 377-382 --- The Magmatic Complexes of the Rouen Mountains and Elgar Uplands from Alexander Island, Antarctic Peninsula: Geochemical Constraints / B. K. KAMENOV and C. T. PIMPIREV / pp. 383-394 --- Transverse Variations in the Gerlache Strait Plutonic Rocks: Effects of the Aluk Ridge-Trench Collision in the Northern Antarctic Peninsula / M. A. PARADA, J.-B. ORSINI and R. ARDILA / pp. 395-404 --- 4. Recent Tectonics of Antarctic Peninsula and Subantarctic Regions --- Evolution of the Bransfield Basin and Rift, West Antarctica / K. BIRKENMAJER / pp. 405-410 --- Uplift Movements King George Island Associated Bransfield Rift Activity / M. ARANEDA and O. GONZÁLEZ-FERRÁN / pp. 411-416 --- Geotransect Drake Passage - Weddell Sea, Antarctica / R. A. J. TROUW and L. A, P. GAMBÔA / pp. 417-422 --- Long-Range Sidescan Sonar (GLORIA) Survey of the Antarctic Peninsula Pacific Margin / J. S. TOMLINSON, C. J. PUDSEY, R. A. LIVERMORE, R. D. LARTER and P. F. BARKER / pp. 423-430 --- Marine Magnetic Anomalies in Bransfield Strait, Antarctica / Y. KIM, T. W. CHUNG and S. H. NAM / pp. 431-438 --- Geochronology and Geochemistry of the Igneous Rocks from Barton and Fildes Peninsulas, King George Island: A Review / Y.-J. JWA, B.-K. PARK and Y. KIM / pp. 439-442 --- Geophysical Features of Deception Island / R. ORTIZ, J. VILA, A. GARCIA, A. G. CAMACHO, J. L. DIEZ, A. APARICIO, R. SOTO, J. G. VIRAMONTE, C. RISSO, N. MENEGATTI and I. PETRINOVIC / pp. 443-448 --- Seismic Activity on Deception Island / J. VILA, R. ORTIZ, A. M. CORREIG, and A. GARCIA / pp. 449-456 --- The Zeolitisation Model of Kerguelen Islands, Southern Indian Ocean / A. GIRET, O. VERDIER and P. NATIVEL / pp. 457-464 --- 5. Terrestrial Geophysics --- Regional Geophysical Imaging of the Antarctic Lithosphere / R. R. B. VON FRESE, D. E. ALSDORF, J-H. KIM, T. M. STEPP, D. R. H. O'CONNELL, K. J. HAYDEN and W-S. LI / pp. 465-474 --- Present Status of Seismic Network in Antarctica / K. KAMINUMA / pp. 475-482 --- Phase Velocity Distribution Beneath Antarctica and Surrounding Oceans / D. ROULAND and G. ROULT / pp. 483-488 --- Determination of the Gravity Field around Antarctica Using Satellite Altimeter Data and Surface Gravity Data —A Review of the Recent Studies— / Y. FUKUDA, J. SEGAWA and K. KAMINUMA / pp. 489-492 --- Intermittent Micro-Seismic Activity in the Vicinity of Syowa Station, East Antarctica / K. KAMINUMA and J. AKAMATSU / pp. 493-498 --- An Approach to the Seismicity of Mt. Melbourne Volcano (Northern Victoria Land—Antarctica) / E. PRIVITERA, L. VILLARI and S. GAMBINO / pp. 499-506 --- The Crustal Structure beneath Ice Stream C and Ridge BC, West Antarctica from Seismic Refraction and Gravity Measurements / C. G. MUNSON and C. R. BENTLEY / pp. 507-514 --- Numerical Modelling of Uplift and Subsidence Adjacent to the Transantarctic Mountain Front / T. A. STERN, U. S. TEN BRINK and M. H. P. BOTT / pp. 515-522 --- Gravity Study of the Mt. Melbourne Quadrangle and the Lower Rennick Glacier Area in North Victoria Land., Antarctica, and the Relation of the Rennick Graben Structure to Rifting Processes in the Ross Sea / J. KIENLE, T. F. REDFIELD and A. M. GOODLIFFE / pp. 523-534 --- Gravity Modeling Across the Transantarctic Mountains, Northern Victoria Land / T. F. REDFIELD and J. C. BEHRENDT / pp. 535-544 --- A Preliminary Aeromagnetic Anomaly Compilation Map for the Weddell Province of Antarctica / A. C. JOHNSON, N. D. ALESHKOVA, P. F. BARKER, A. V. GOLYNSKY, V. N. MASOLOV and A. M. SMITH / pp. 545-554 --- New Aeromagnetic Map of West Antarctica (Weddell Sea Sector): Introduction to Important Features / A. C. JOHNSON and A. M. SMITH / pp. 555-562 --- Ground Magnetics in North Victoria Land (East Antarctica) / E. BOZZO, A. COLLA and A. MELONI / pp. 563-570 --- Airborne Gravity from a Light Aircraft: CASERTZ 1990-1991 / R. E. BELL, B. J. COAKLEY, D. D. BLANKENSHIP, S. M. HODGE, J. M. BROZENA and J. JARVIS / pp. 571-578 --- Thinning Rate of Ice Sheet on Mizuho Plateau, East Antarctica, Determined by GPS Differential Positioning / H. TOH and K. SHIBUYA / pp. 579-584 --- The Geophysical Observatory at Terra Nova Bay / A. MELONI, A. DE SANTIS, A. MORELLI, P. PALANGIO, G. ROMEO, E. BOZZO and G. CANEVA / pp. 585-588 --- The Absolute Gravity Station and the Mt. Melbourne Gravity Network in Terra Nova Bay, North Victoria Land, East Antarctica / G. CERUTTI, F. ALASIA, A. GERMAK, E. BOZZO, G. CANEVA, R. LANZA and I. MARSON / pp. 589-564 --- Seismological Observations by a Three-Component Broadband Digital Seismograph at Syowa Station, Antarctica / K. NAGASAKA, K. KAMINUMA and K. SHIBUYA / pp. 595-602 --- 6. Marine Geology and Geophysics --- Preliminary Seismic Stratigraphy of the Northwestern Weddell Sea Continental Shelf / J. B. ANDERSON, S. S. SHIPP and F. P. SIRINGAN / pp. 603-612 --- Sequence Stratigraphy of the Crary Fan, Southeastern Weddell Sea / A. MOONS, M. DE BATIST, J. P. HENRIET H. MILLER / pp. 613-618 --- Modeling of Cenozoic Stratigraphy in the Ross Sea Using Sonobuoy Seismic-Refraction Data / G. R. COCHRANE and A. K. COOPER / pp. 619-626 --- Heat Flow and Tectonics of the Western Ross Sea / B. DELLA VEDOVA, G. PELLLS, L. A. LAWVER and G. BRANCOLINI / pp. 627-638 --- Tectonic Development of Graben over the Astrid Ridge off Dronning Maud Land, Antarctica / D. GOPALA RAO, M. V. RAMANA and K. V. L. N. S. SARMA / pp. 639-648 --- The Directions of Magnetic Anomaly Lineations in Enderby Basin, off Antarctica / Y. NOGI, N. SEAMA and N. ISEZAKI / pp. 649-654 --- International Offshore Studies on Antarctic Cenozoic History, Glaciation, and Sea-Level Change: The ANTOSTRAT Project / A. K. COOPER and P. N. WEBB / pp. 655-660 --- 7. Cenozoic Geology and Geornorphology --- Late Cenozoic Glacial History in the Sør -Rondane Mountains, East Antarctica / K. MORIWAKI, K. HIRAKAWA, M. HAYASHI and S. IWATA / pp. 661-668 --- Glaciation of the Central Part of the Sør Rondane, Antarctica: Glaciological Evidence / F. PATTYN, H. DECLEIR and P. HUYBRECHTS / pp. 669-678 --- Observations of Clayey Till and Underlying Glacier Ice in the Central Sør Rondane Mountains, East Antarctica / H. HASEGAWA, S. IWATA and N. MATSUOKA / pp. 679-682 --- Late Quaternary Ice-Surface Fluctuations of the Lambert Glacier / M. C. G. MABIN / pp. 683-688 --- Late Quaternary History of the Bunger Hills, East Antarctica / E. A. COLHOUN and D. A. ADAMSON / pp. 689-698 --- Late Neogene Sediments of Coastal East Antarctica —An Overview / P. G. QUILTY / pp. 699-706 --- Cenozoic Glacial Geology and Mountain Uplift in Northern Victoria Land, Antarctica / F. M. VAN DER WATEREN and A. L. L. M. VERBERS / pp. 707-714 --- A Glacio-Geological Reconnaissance of the Southern Prince Albert Mountains, Victoria Land, Antarctica / A. L. L. M. VERBERS and F. M. VAN DER WATEREN / pp. 715-720 --- Geomorphology of the Priestley Glacier to Campbell Glacier Transect Mapped by Aerial Photographs (Victoria Land - Antarctica) / A. BIASINI, O. FANUCCI and M. C. SALVATORE / pp. 721-726 --- Satellite Data Processing of Victoria Land / R. CASACCHIA, A. CAPRARO, M. POSCOLIERI, R. SALVATORI, R. BIANCHI and A. PICCHIOTTI / pp. 727-732 --- Fluctuations of Ice Tongues and Ice Shelves Derived from Satellite Images in Terra Nova Bay Area, Victoria Land, Antarctica / M. FREZZOTTI / pp. 733-740 --- The Last Major Deglaciation in the Antarctic Peninsula Region—A Review of Recent Swedish Quaternary Research— / C. HJORT, Ó. INGÓLFSSON and S. BJÖRCK / pp. 741-744 --- Permafrost Occurrence of Seymour Island and James Ross Island, Antarctic Peninsula Region / M. FUKUDA, J. STRELIN, K. SHIMOKAWA, N. TAKAHASHI, T. SONE and D. TROMBOTT / pp. 745-750 --- Geomorphology of Hurd Peninsula, Livingston Island, South Shetland Islands / J. LOPEZ-MARTINEZ, E. MARTINEZ DE PISON and A. ARCHE / pp. 751-756 --- Mechanical Weathering on Livingston Island, South Shetland Islands, Antarctica / K. J. HALL / pp. 757-762 --- Modeling the Bathymetry of the Antarctic Continental Shelf / U. S. TEN BRINK and A. K. COOPER / pp. 763-772 --- Cenozoic Glacial History of Antarctica—A Correlative Synthesis / K. MORIWAKI, Y. YOSHIDA and D. M. HARWOOD / pp. 773-780 --- Late Quaternary Environmental Changes in the Antarctic and their Correlation with Global Change / Q. S. ZHANG / pp. 781-786

Description / Table of Contents: The Encyclopedia of GIS features an alphabetically arranged comprehensive and authoritative treatment of this subject matter. Authored by world experts and peer-reviewed for accuracy and currency, the entries explain the key software, data sets, and processes used by geographers and computational scientists. Nearly 200 topics include major overviews, such as Geoinformatics, Spatial Cognition, and Location-Based Services. Short entries define specific terms and concepts, such as the Global Positioning System, Digital Elevation/Terrain Model, and Remote Sensing. Larger entries include key citations to the literature, and (online) internal hyperlinks to definitional entries and current standards.The reference will be published as a print volume with abundant black and white art, and simultaneously as an XML online reference with hyperlinked citations, cross-references, four-color art, links to web-based maps, and other interactive features.

Description / Table of Contents: A Complutense International Seminar on "Earth Sciences and Mathematics" was organised and held in Madrid at the Facultad de Ciencias Matemáticas of the Universidad Complutense de Madrid in September 2006. Scientists from both fields, Mathematics and Earth Sciences, took part in this International Seminar, addressing scientific problems related to our planet from clearly complementary approaches, seeking to gain and learn from this dual approach and proposing a closer collaboration in the near future. This volume is the second one of a Topical Issue on "Earth Sciences and Mathematics" and contains papers addressing different topics as analysis of InSAR time series, fuzzy classification for remote sensing, modelling gravitational instabilities, geodynamical evolution of the Alboran Sea, statistical warning systems for volcanic hazards, analysis of solutions for the hydrological cycle, study of the ice flow, magma intrusion in elastic layered media, river channel formation, Hartley transform filters for continuous GPS, and deformation modeling.

Description / Table of Contents: The tragedy of the 2004 Indian Ocean tsunami has led to a rapid expansion in science directed at understanding tsunami and mitigating their hazard. A remarkable cross-section of this research was presented in the session: Tsunami Generation and Hazard, at the International Union of Geodesy and Geophysics XXIV General Assembly in Perugia, held in July of 2007. Over one hundred presentations were made at this session, spanning topics ranging from paleotsunami research, to nonlinear shallow-water theory, to tsunami hazard and risk assessment. A selection of this work, along with other contributions from leading tsunami scientists, is published in detail in the 28 papers of this special issue of Pure and Applied Geophysics: Tsunami Science Four Years After the Indian Ocean Tsunami. While Part I focused on modelling and hazard assessment, Part II of this issue includes 14 papers covering new developments in observation and data analysis. These include new analyses of both recent and historical tsunami events, as well as state-of-the-art techniques for tsunami data analysis.

Description / Table of Contents: IOP Publishing presents Volume 6 of the open-access IOP Conference Series: Earth and Environmental Science (EES) as the online abstract book for the IARU International Scientific Congress on Climate Change: Global Risks, Challenges and Decisions (10–12 March, Copenhagen, Denmark). This abstracts-only volume of EES is quite different to standard IOP Conference Series proceedings volumes which contain full, peer-reviewed proceedings papers. This unique volume of more than 1400 abstracts, divided into 58 different sessions, contains all the oral and poster presentations from the Congress. In view of the importance of the Climate Change Congress as a scientific basis for the COP15 conference, we are delighted to offer this collection as a permanent record of current research devoted to climate change. We hope this compilation will contribute to future world-wide dialogue on climate change in the ongoing search to address the scientific, political, social and economic challenges ahead.

Description / Table of Contents: The accelerated, and often uncontrolled, growth of the cities has contributed to the ecological transformation of their immediate surroundings. Factors contributing to the urban vulnerability include: lowering or rising of the water table, subsidence, loss of bearing capacity of soil foundations and instability of slopes. Recent catastrophic earthquakes highlight the poor understanding by decision makers of seismic related risk, as well as the tendency of some builders to use the cheapest designs and construction materials to increase short-term economic returns on their investment. Losses from earthquakes will continue to increase if we do not shift towards proactive solution. Disaster reduction is both an issue for consideration in the sustainable development agenda and a cross-cutting issue relating to the social, economic, environmental and humanitarian sectors. As location is the key factor, which determines the level of risk associated with a hazard, land-use plans and mapping should be used as tools to identify the most suitable usage for vulnerable areas.

Description / Table of Contents: Exciting developments in earthquake science have benefited from new observations, improved computational technologies, and improved modeling capabilities. Designing realistic supercomputer simulation models for the complete earthquake generation process is a grand scientific challenge due to the complexity of phenomena and range of scales involved from microscopic to global. The book is divided into two parts: The present volume - Part I - focuses on microscopic simulation, scaling physics, dynamic rapture and wave propagation, earthquake generation, cycle and seismic pattern. Topics covered range from numerical developments, rupture and gouge studies of the particle model, Liquefied Cracks and Rayleigh Wave Physics, studies of catastrophic failure and critical sensitivity, numerical and theoretical studies of crack propagation, developments in finite difference methods for modeling faults, long time scale simulation of interacting fault systems, modeling of crustal deformation, through to mantle convection.

Description / Table of Contents: Exciting developments in earthquake science have benefited from new observations, improved computational technologies, and improved modeling capabilities. Designing realistic supercomputer simulation models for the complete earthquake generation process is a grand scientific challenge due to the complexity of phenomena and range of scales involved from microscopic to global. The present volume - Part II - incorporates computational environment and algorithms, data assimilation and understanding, model applications and iSERVO. Topics covered range from iSERVO and QuakeSim: implementing the international solid earth research virtual observatory by integrating computational grid and geographical information web services; LURR (Load-Unload Response Ratio) described in six papers involving this promising earthquake forecasting model; pattern informatics and phase dynamics and their applications, which was also a highlight in the Workshop; computational algorithms, including continuum damage models and visualization and analysis of geophysical datasets; evolution of mantle material; the state vector approach; and assimilation of data such as geodetic data, GPS data, and seismicity and laboratory experimental data.

Description / Table of Contents: Understanding the process underlying the origin of Earth magnetic field is one of the greatest challenges left to classical Physics. Geomagnetism, being the oldest Earth science, studies the Earth’s magnetic field in its broadest sense. The magnetic record left in rocks is studied in Paleomagnetism. Both fields have applications, pure and applied: in navigation, in the search for minerals and hydrocarbons, in dating rock sequences, and in unraveling past geologic movements such as plate motions they have contributed to a better understanding of the Earth. Consisting of more than 300 articles written by ca 200 leading experts, this authoritative reference encompasses the entire fields of Geomagnetism and Paleomagnetism in a single volume. It describes in fine detail at an assessable level the state of the current knowledge and provides an up-to-date synthesis of the most basic concepts. As such, it will be an indispensable working tool not only for geophysicists and geophysics students but also for geologists, physicists, atmospheric and environmental scientists, and engineers.

Description / Table of Contents: The 14th International Symposium for the Advancement of Boundary Layer Remote Sensing (ISARS 2008) addresses acoustical, optical and microwave techniques to probe the lower part of the atmosphere. The symposium focuses on the physical basis of remote sensing techniques and new instruments. A theme for the conference is also various applications of remote sensing, this year with special emphasis on wind energy. ISARS is an informal association of scientists from all over the world which organizes a symposium every second year. While the abbreviation ISARS has remained unchanged since the start in Calgary 1981, the words have changed from International Symposium on Acoustic Remote Sensing and Associated Techniques of the Atmosphere and Oceans because other techniques than the acoustic have become important for boundary layer remote sensing. Specifically lasers for remote wind sensing are developing rapidly. By the end of each symposium the chairman of the next has been elected. So far the symposia have taken place in different countries each time with different chairs. The scientific organizing committee, which consists mainly of chair persons of previous symposia, maintains the continuity of themes and of the organization in general. After the last symposium held in Garmisch-Partenkirchen, many of the papers appeared in revised and improved form in a special issue of Meteorologische Zeitschrift. A similar special issue is also planned to follow ISARS 2008. I wish to express my gratitude to the scientific organizing committee for valuable advice and to the local organizing committee for all their effort with the conference papers and the conference itself. Jakob Mann, Conference Chair

Description / Table of Contents: The tragedy of the 2004 Indian Ocean tsunami has led to a rapid expansion in science directed at understanding tsunami and mitigating their hazard. A remarkable cross-section of this research was presented in the session: Tsunami Generation and Hazard, at the International Union of Geodesy and Geophysics XXIV General Assembly in Perugia, held in July of 2007. Over one hundred presentations were made at this session, spanning topics ranging from paleotsunami research, to nonlinear shallow-water theory, to tsunami hazard and risk assessment. A selection of this work, along with other contributions from leading tsunami scientists, is published in detail in the 28 papers of this special issue of Pure and Applied Geophysics: Tsunami Science Four Years After the Indian Ocean Tsunami. Part I of this issue includes 14 papers covering the state-of-the-art in tsunami modelling and hazard assessment. Another 14 papers are published in Part II focusing on observations and data analysis.

Description / Table of Contents: Geophysicists use seismic signals to image structures in the Earth's interior, to understand the mechanics of earthquake and volcanic sources, and to estimate their associated hazards. Keiiti Aki developed pioneering quantitative methods for extracting useful information from various portions of observed seismograms and applied these methods to many problems in the above fields. This volume honors Aki's contributions with review papers and results from recent applications by his former students and scientific associates pertaining to topics spawned by his work. Discussed subjects include analytical and numerical techniques for calculating dynamic rupture and radiated seismic waves, stochastic models used in engineering seismology, earthquake and volcanic source processes, seismic tomography, properties of lithospheric structures, analysis of scattered waves, and more. The volume will be useful to students and professional geophysicists alike.

Description / Table of Contents: Concepts and methods of fractal geometry penetrate various branches of human knowledge to an increasing degree. This tendency is particularly striking in the geosciences, because many processes occurring in and on the Earth result in time dependences and spatial patterns that have a fractal character. The contributions in this volume arose from the "3rd International Symposium on Fractals and Dynamic Systems in Geosciences", held at Stara Lesna, Slovakia in June, 1997. The volume contains new ideas and applications of fractal geometry in such diverse branches of geoscience as engineering geology, the physics of the lithosphere (including faulting, seismicity, and fluid flow), and climate behavior.

Description / Table of Contents: A Complutense International Seminar on "Earth Sciences and Mathematics" was organised and held in Madrid at the Facultad de Ciencias Matemáticas of the Universidad Complutense de Madrid September, 13th-15th, 2006. Scientists from both fields, Mathematics and Earth Sciences, took part in this International Seminar, addressing scientific problems related with our planet from clearly complementary approaches, seeking to gain and learn from this dual approach and proposing a closer collaboration in the near future. This volume is the first one of a Topical Issue on "Earth Sciences and Mathematics" and contains papers addressing different topics as deformation modelling applied to natural hazards, inverse gravimetric problem to determine 3D density structure, advanced differential SAR interferometry, climate change, geomagnetic field, Earthquake statistics, meteorological studies using satellite images, climate energy balance models, study of soils properties, and multifractal data sets.

Description / Table of Contents: On September 10, 1996, The United Nations General Assembly adopted the Copmprehensive Nuclear-Test-Ban Treaty (CTBT), prohibiting nuclear explosions worldwide, in all environments. The treaty calls for a global verification system, including a network of 321 monitoring stations distributed around the globe, a data communications network, an international data center (IDC), and on-site inspections, to verify compliance. This volume presents certain recent research results pertaining on methods used to process data recorded by instruments of the International Monitoring System (IMS) and addressing recording infrasound signals generated by atmospheric explosions. Six papers treating data processing provide an important selection of topics expected to contribute to improving our ability to successfully monitor a CTBT. Five papers concerning infrasound include descriptions of ways in which that important research area can contribute to CTBT monitoring, the automatic processing of infrasound data, and site conditions that serve to improve the quality of infrasound data.

Description / Table of Contents: Exciting developments in earthquake science have benefited from new observations, improved computational technologies, and improved modeling capabilities. Designing models of the earthquake of the earthquake generation process is a grand scientific challenge due to the complexity of phenomena and range of scales involved from microscopic to global. Such models provide powerful new tools for the study of earthquake precursory phenomena and the earthquake cycle. Through workshops, collaborations and publications the APEC Cooperation for Earthquake Simulations (ACES) aims to develop realistic supercomputer simulation models for the complete earthquake generation process, thus providing a "virtual laboratory" to probe earthquake behavior. Part I of the book covers microscopic simulations, scaling physics and earthquake generation and cycles. This part also focuses on plate processes and earthquake generation from a macroscopic standpoint.

Description / Table of Contents: Exciting developments in earthquake science have benefited from new observations, improved computational technologies, and improved modeling capabilities. Designing models of the earthquake generation process is a grand scientific challenge due to the complexity of phenomena and range of scales involved from microscopic to global. Such models provide powerful new tools for the study of earthquake precursory phenomena and the earthquake cycle. Through workshops, collaborations and publications, the APEC Cooperation for Earthquake Simulations (ACES) aims to develop realistic supercomputer simulation models for the complete earthquake generation process, thus providing a "virtual laboratory" to probe earthquake behavior. Part II of the book embraces dynamic rupture and wave propagation, computational environment and algorithms, data assimilation and understanding, and applications of models to earthquakes. This part also contains articles on the computational approaches and challenges of constructing earthquake models.

Description / Table of Contents: Mechanical properties and fluid transport in rocks are intimately linked as deformation of a solid rock matrix immediately affects the pore space and permeability. The coupling of fluid circulation and deformation processes in crustal rocks results in significant complexity of the mechanical and fluid transport behavior. This often poses severe technical and economic problems for reservoir and geotechnical engineering projects involved in oil and gas production, CO2 sequestration, mining and underground waste disposal. The volume results from the 5th Euroconference on Rock Physics and Geomechanics, which was held in Potsdam, Germany in September 2004. Part I of the topical volume mainly contains contributions investigating the nucleation and evolution of crack damage in rocks, new or modified techniques to measure rock fracture toughness and a discussion of upscaling techniques relating mechanical and fluid transport behavior in rocks at different spatial scales. Part II contains contributions discussing fluid flow and transport in rocks as observed on the laboratory scale and in boreholes. The evolution of rock damage pertinent to the stability of underground excavations is studied and scaling relations of elastic properties and seismic events are discussed.

Description / Table of Contents: Mechanical properties and fluid transport in rocks are intimately linked as deformation of a solid rock matrix immediately affects the pore space and permeability. This may result in transient or permanent changes of pore pressures and effective pressures causing rock strength to vary in space and time. Fluid circulation and deformation processes in crustal rocks are coupled, producing significant complexity of mechanical and fluid transport behavior. This often poses severe technical and economic problems for reservoir and geotechnical engineering projects involved in oil and gas production, CO2 sequestration, mining and underground waste disposal. For example, the depletion of hydrocarbon and water reservoirs leading to compaction may have adverse effects on well production. Solution/precipitation processes modify porosity and affect permeability of aquifers and reservoir rocks. Fracture damage from underground excavation will critically influence the long-term stability and performance of waste storage. Part I of this topical volume covers mainly the nucleation and evolution of crack damage in rocks, new or modified techniques to measure rock fracture toughness and a discussion of upscaling techniques relating mechanical and fluid transport behaviour in rocks at different spatial scales. Part II, to be published later in 2006, will include studies investigating the coupling of rock deformation and fluid flow.

Description / Table of Contents: This volume presents summaries of recent research results on the related subjects of source processes and explosion yield estimation, which are important elements of any treaty verification system. The term Source Processes, in the context of nuclear test monitoring, refers to a wide range of research topics. In a narrow definition, it describes the complex physical phenomena that are directly associated with a nuclear explosion, and the catastrophic deformation and transformation of the material surrounding the explosion. In a broader sense, it includes a host of topics related to the inference of explosion phenomena from seismic and other signals. A further widening of the definition includes the study and characterization of source processes of events other than nuclear, such as earthquakes and, in particular, mining explosions. This latter research is especially important relative to the question of identifying and discriminating nuclear explosions from other seismic events. Explosion Yield Estimation deals with the corresponding inverse problem of inferring explosion source characteristics through analyses of the various types of seismic signals produced by the explosion. This is a complex technical task which has been the focus of some of the most contentious treaty monitoring debates. The current compilation of eight articles on Source Processes and six articles on Explosion Yield Estimation gives a good representation of state-of-the-art research currently being conducted in the broad area of seismic source characterization in the context of nuclear test monitoring.

Description / Table of Contents: The topics included in this issue deal with many aspects of volcanic and seismic activity, two of the natural hazards of geological origin that have the greatest impact and pose the predominant risk to society. This book comprises eighteen papers, most of which were presented at an international seminar organized and held at the Complutense University of Madrid in October 2001. The papers address geodetic, geophysical and geochemical effects caused by seismic and volcanic activity; monitoring of volcanic and seismic processes using space and terrestrial techniques; complementarity of these techniques; theoretical modelling of volcanic and seismic processes; inverse problem; interpretation of observations; hazards; seismicity patterns and application.

Description / Table of Contents: DEKORP, the German continental reflection seismic program, was the major focus of deep seismic research in Germany in the 1980s and 1990s. The seismic sections provided fundamental new insight into deep geological structure of the European continent and the dynamics of continental formation. They formed the basis for worldwide comparative studies of orogenic structure. The complicated signature of the reflections from the deep crust indicated that new processing and interpretation techniques must be considered to better image the crystalline crust. Results of these efforts, including pre-stack migration, 3-D imaging, shear waves and seismic anisotropy, are presented in this special volume. In part, the articles open the perspective to new and future research. In part, they document research activity triggered by technical and interpretational questions raised by DEKORP field work and profiling results. Many of the presented methods can find immediate application in industrial seismic prospecting.

Description / Table of Contents: In September 1996, the United Nations General Assembly adopted the Comprehensive Nuclear-Test-Ban Treaty (CTBT), prohibiting nuclear explosions worldwide, in all environments. The treaty calls for a global verification system, including a network of 321 monitoring stations distributed around the globe, a data communications network, an international data centre (IDC), and on-site inspections, to verify compliance. A global hydroacoustic monitoring system is being planned and implemented for verification of the CTBT. Much of the research conducted over the past several decades on acoustic surveillance of the oceans, formerly driven by the need to detect and track submarines, is now being applied to the development of effective monitoring methods to verify compliance with the CTBT. The aim of this volume on Hydroacoustic Monitoring of the CTBT is to summarize the research being conducted in this field and to provide basic references for future research. Much of the new research emphasizes major advances in understanding the coupling of ocean acoustic waves with elastic waves in the solid Earth. Topics covered include source excitation, detection and classification of events generating hydroacoustic signals, discrimination between underwater explosions and naturally occurring events, as well as topics in coupling of acoustic to seismic wavefields.

Description / Table of Contents: This topical volume of the Journal of Pure and Applied Geophysics utilizes new information not previously accessible for fog related research. It focuses on surface and remote sensing observations of fog, various numerical model applications using new parameterizations, fog climatology, and new statistical methods. The results presented in this special issue come from research efforts in North America and Europe, mainly from the Canadian Fog Remote Sensing And Modeling (FRAM) and European COST-722 fog/visibility related projects. Students, postgraduates, and researchers, interested in cloud physics, physical meteorology, aviation meteorology, climate, weather forecasting, and in other adjacent disciplines, can use this book as a basis for future developments in fog research. It is hoped that this book will lead to new scientific challenges in fog related research, teaching, and applications.

Description / Table of Contents: A workshop on Induced Seismicity was organized during the 27th General Assembly of the International Association of Seismology and Physics of Earth's Interior (IASPEI) in Wellington, New Zealand during January 10-21, 1994. This volume presents a collection of 16 papers accepted for publication which accrued from this workshop. The first three papers address mining activity related to induced seismicity. The fourth paper deals with water injection induced seismic activity, while the remaining 12 papers treat several aspects of water reservoir induced earthquakes. Globally, the Koyna dam creating Shivajisagar Lake in Maharashtra, India, continues to be the most significant site of reservoir-induced earthquakes. With the increase in the number of cases of induced seismicity, there is a growing concern among planners, engineers, geophysicists and geologists to understand the environment conducive to this phenomenon. While the changes in pore-fluid pressure have been identified as the key factor in inducing earthquakes, the phenomenon itself is still poorly understood. This reality thus makes the study of the induced seismicity very important and this volume timely.

Description / Table of Contents: This volume, "Air Quality", contains many original findings on biomasss fires, transboundary pollution and associated haze and their impacts on health, biodiversity and economy and thus is expected to be a source book for research in South East Asia. Many of the results presented in this volume pertain to this region and are thus available under one "roof". Some papers could be discussed in graduate level classes dealing with Air Pollution, Air Quality, Cloud Physics and Biophysics. The scientific community will find this book a useful addition to their personal and institutional libraries.

Description / Table of Contents: Understanding, modeling and prediction of mesoscale processes in the atmosphere, ocean and environmental systems have gained importance in the last decade or so. This is because of the availability of more sophisticated observational systems, provided by technological innovations and more realistic simulations using advanced dynamical models. This volume contains many original findings on mesoscale processes in atmospheric and oceanic systems through mathematical modeling, numerical simulations and field experiments. These scientific papers examine and provide the latest developments on a range of topics that include tropical cyclones/hurricanes, mesoscale variability and modeling, seasonal monsoons and land surface processes including atmospheric boundary layer.

Description / Table of Contents: In many past and recent earthquakes it has been shown that the local conditions and, in particular, the local geology have a great influence on the observed seismic ground motion and, consequently, on the damage distribution in housing, industrial stock, and life-lines. Seismic microzoning is the usual procedure to have these local effects taken into account for engineering design and land-use planning, being a useful tool for earthquake risk mitigation. This volume presents a collection of papers mainly originated from a workshop on Seismic Microzoning, organized during the 23rd General Assembly of the European Geophysical Society (EGS) in Nice, France in April 1998. The workshop dealt with various geophysical tools for analysing the effects of the local soils of subsurface geology on seismic ground motion, namely the methods using experimental data such as microtremors, and the theoretical/numerical 1-D and 2-D modelling methods. Additional contributions discussing techniques for characterising soil properties, microzoning applications to several urban areas, and others were added to the volume to broaden this important topic.

Description / Table of Contents: 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.

Description / Table of Contents: Geodynamics concerns the dynamics of the earth's global motion, of the earth's interior motion and its interaction with surface features, together with the mechanical processes in the deformation and rupture of geological structures. Its final object is to determine the driving mechanism of these motions. It is highly interdisciplinary. In providing the basic geological, geophysical infromation required for a comprehensive mechanical analysis, there are also many mechanical problems involved, which means the problem is coupled intricately with geophysics, rock mechanics, seismology, structural geology, etc. This is Part II of the Proceedings of an IUTAM/IASPEI Symposium on Mechanics Problems in Geodynamics held in Beijing, September 1994. It discusses different aspects of mechanics problems in geodynamics involving the earth's rotation, tectonic analyses of various parts of the world, mineral physics and flow in the mantle, seismic source studies and wave propagation and application of the DDA method in tectonic analysis.

Description / Table of Contents: In September 1996, the United Nations General Assembly adopted the Comprehensive Nuclear-Test-Ban Treaty (CTBT), prohibiting nuclear explosions worldwide, in all environments. The treaty calls for a global verification system, including a network of 321 monitoring stations distributed around the globe, a data communications network, an international data center, and onsite inspections, to verify compliance. The problem of identifying small-magnitude banned nuclear tests and discriminating between such tests and the background of earthquakes and mining-related seismic events, is a challenging research problem. Because they emphasize CTBT verification research, the 12 papers in this special volume primarily addresses regional data recorded by a variety of arrays, broadband stations, and temporarily deployed stations. Nuclear explosions, earthquakes, mining-related explosions, mine collapses, single-charge and ripple-fired chemical explosions from Europe, Asia, North Africa, and North America are all studied. While the primary emphasis is on short-period, body-wave discriminants and associated source and path corrections, research that focuses on long-period data recorded at regional and teleseismic distances is also presented Hence, these papers demonstrate how event identification research in support of CTBT monitoring has expanded in recent years to include a wide variety of event types, data types, geographic regions and statistical techniques.

Description / Table of Contents: Stress re-distribution as a result of exploitation of mineral, hydrocarbon, geothermal, and water resources cannot be eliminated. The effort must be directed to a better understanding of the underlying processes for the management of the hazard and risk associated with these operations. The study of induced seismicity has continually evolved over the past couple of decades, as underlined by both the number and complexity of applied studies required to satisfy the increased economic demands, assure the safety of the workforce and equipment, and protect the environment. A considerable effort has been put into the development of passive monitoring technology, specialized products and services being available for a wide range of applications. The recording of substantial high quality seismic data has stimulated the work on theoretical and practical aspects related to these applications, involving not only seismological knowledge, but also elements of rock mechanics, and an understanding of mining, geotechnical, and petroleum engineering. Pure and Applied Geophysics has largely contributed to raising the profile of induced seismicity research and its credibility. The range of specific analyses included in the present collection of studies expresses how powerful and resourceful passive seismic monitoring has become to so many applications. Seismic data are routinely evaluated for a series of development activities specific to each application. Engineering practice is continually improved based on trials and analyses of the ground response and stress levels, confirmed through the monitoring of seismicity. We are better equipped than ever to provide management decisions based on formalized, quantitative, and thus objective assessment.

Description / Table of Contents: On September 1996, the United Nations General Assembly adopted the Comprehensive Nuclear-Test-Ban Treaty (CTBT), prohibiting nuclear explosions worldwide, in all environments. The treaty calls for a global verification system, including a network of 321 monitoring stations distributed around the globe, a data communications network, an international data center (IDC), and on-site inspections to verify compliance. Successful monitoring of a CTBT requires that we detect and identify all nuclear explosions. Since many events of concern will be too small to be detected teleseismically, this capability requires the use of regional-distance seismograms. The complexity of regional seismograms presents many technical challenges for a monitoring program. This issue focuses on problems associated with regional wave propagation through complex media. It includes papers that investigate regional variations of elastic and anelastic properties of Eurasia, the blockage of regional phases by sedimentary basins, methods for modeling regional wave propagation and for calibrating seismic wave paths in order to extract amplitude variations and source parameters. These papers illustrate the research and development necessary for acquiring an understanding of regional wave propagation which in turn provides the foundation for operational tools used to monitor a CTBT.

Description / Table of Contents: 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.

Description / Table of Contents: In September 1996, the United Nations General Assembly adopted the Comprehensive Nuclear-Test-Ban Treaty (CTBT), prohibiting nuclear explosions worldwide, in all environments. The treaty calls for a global verification system, including a network of 321 monitoring stations distributed around the globe, a data communications network, an international data centre (IDC), and on-site inspections, to verify compliance. This volume contains research papers focusing on seismic ecent location in the CTBT context. The on-site inspection protocol of the treaty specifies a search area not to exceed 1000 square km. Much of the current research effort is therefore directed towards refining the accuracy of event location by including allowances for three-dimensional structure within the Earth. The aim is that the true location of each event will lie within the specified source zone regarding postulated location. The papers in this volume cover many aspects of seismic event location, including the development of algorithms suitable for use with three-dimensional models, allowances for regional structure, use of calibration events and source-specific station corrections. They provide a broad overview of the current international effort to improve seismic event location accuracy, and the editors hope that it will stimulate increased interest and further advances in this important field.

Description / Table of Contents: Natural hazards events such as earthquakes or volcanic eruptions involve activation of coupled thermo-hydro-chemo-mechanical processes in rocks. The present book assembles unpublished contributions to the 7th Euro-Conference on Rock Physics and Geomechanics, held in 2007 in Erice, Italy. It presents new laboratory data, theoretical and numerical rock physics models and field observations relevant to the study of natural hazards. In particular, several papers are devoted to rock failure and explore the relationship between the competing deformation micro-mechanisms. Several others investigate shear-induced anisotropy of mechanical and/or transport properties, both in large-scale geologic objects and in laboratory samples. The remaining papers treat various aspects of rock physics and their industrial applications such as geothermics and reservoir characterization.

Description / Table of Contents: Variations in seismic Q are sensitive to a much greater extent than are seismic velocity variations on factors such as temperature, fluid content, and the movement of solid state defects in the earth. For that reason an understanding of Q and its variation with position in the earth and with time should provide information in earth's tectonic evolution, as well as on aspects of its internal structure. Progress in understanding Q has suffered from difficulty in obtaining reliable amplitude data at global and temporary stations. Moreover, laboratory determinations of Q, until recently, were most often made at frequencies much higher than those measured by seismologists for waves propagating through the earth. Recent advances in seismic station distribution and quality, as well as in methodology at both high and low fequencies, have greatly improved the quality of observational data available to seismologists from global stations. Concurrent advances have been made in measuring Q using laboratory samples at frequencies that pertain to the earth and in theoretical understanding of seismic wave attenuation. Papers of this volume present new information on Q in the earth from several perspectives: methodology, results from global and regional observations of both body and surface waves, laboratory measurements, and theoretical understanding. The editors believe that we have reached a new threshold in Q studies and that advances in data quality and methodology will spur increased interest in this difficult, but interesting field.

Description / Table of Contents: This special issue contains contributions presented at the international workshop Seismic Waves in Laterally Inhomogeneous Media V, which was held at the Castle of Zahrádky, Czech Republic, June 5 - 9, 2000. The workshop, which was attended by about 60 seismologists from 16 countries, was devoted mainly to the current state of theoretical and computational means of study of seismic wave propagation in complex structures. The special issue begins with papers dealing with the study and the application of the ray methods. Problems such as coupling of quasi-shear waves or smoothing of models for effective ray computations are dealt with. Applications of the ray methods in seismic exploration are presented. Further, directional wavefield decomposition, phase space, path integral and parabolic equation methods are discussed. Attention is also devoted to attenuation and scattering problems, and to seismic inversion problems.

Description / Table of Contents: The special issue contains contributions presented at the international workshop Seismic waves in laterally inhomo- geneous media IV, which was held at the Castle of Trest, Czech Republic, May 22-27, 1995. The workshop, which was attended by about 100 seismologists from more than 10 countries, was devoted mainly to the current state of theoretical and computational means of study of seismic wave propagation in complex structures. The special issue can be of interest for theoretical, global and explorational seismologists. The first part contains papers dealing with the study and the use of various methods of solving forward and inverse problems in complicated structures. Among other methods, discrete-wave number method, the finite-difference method, the edge-wave supperposition method and the ray method are studied and used. Most papers contained in the second part are related to the ray method. The most important topics are two-point ray tracing, grid calculations of travel times and amplitudes and seismic wave propagation in anisotropic media.

Description / Table of Contents: This volume contains 18 papers from 8 countries dealing with different aspects of triggered and induced seismicity. In situ observations of the phenomenon include examples of seismicity due to reservoirs, hard-rock mines, coal mines, mine collapses, brine production caverns, fluid injections, and geothermal hot-dry-rock projects. High-frequency acoustic emission studies from laboratory experiments and hard-rock mines have also been reported. Besides providing case studies of previously unavailable observations of seismicity, the present volume contains investigations of the causes and source mechanism of seismic events, determination of source parameters, seismic hazard as related to the design of support systems for underground openings and procedures for closure of brine production caverns, and the use of seismic and non-destructive techniques in assessing rock damage, measuring dynamic elastic moduli and detecting discontinuities. This collection of papers provides an excellent indication of the state of the art, recent developments and outstanding challenges facing scientists and engineers in understanding the causes and alleviating the effects of induced seismicity.

Description / Table of Contents: The perturbation of the earth by mankind causes earthquakes in a variety of situations. This phenomenon continues to be a major concern to engineers and scientists concerned with the mitigation of the consequences of this seismicity, as well as better understanding the processes at its origin. The present volume contains twelve papers from six countries, dealing with observations of triggered and induced seismicity in four continents. The reported cases include seismicity due to hard-rock mines, coal mines, underground research facilities for nuclear waste disposal, water injections, reservoirs, acquifers and oil fields. This volume provides case studies of previously unavailable observations of this phenomenon, investigations of the cause and source mechanism of seismic events, studies of source location distributions, determinations of seismic source parameters, cases of the use of such parameters in assessing rockburst hazard in mines, and measurements of velocity an attenuation properties of rock masses. The present collection of papers provides an excellent indication of the current state of the art and new developments in this area of research.

Description / Table of Contents: This volume contains twenty-five research papers on seismicity patterns, their interpretation and their possible relevance to learning how to predict earthquakes. The interpretation of seismicity patterns has become somewhat controversial. Some researchers present case histories suggesting that earthquakes may be predicted by increased seismic moment release or seismic quiescence and, in general, by understanding the processes of self-organized criticality. Others deny these hypotheses. Although the problem of recognizing foreshocks in real time remains unsolved, new properties of microearthquakes as a function of time are coming to light. Computer modeling of seismicity also is advancing in sophistication and relevance. Surprisingly, b-values seem to hold substantial information about varying local conditions of earthquake generation.

Description / Table of Contents: Statistical Seismology aims to bridge the gap between physics-based and statistics-based models. This volume provides a combination of reviews, methodological studies, and applications, which point to promising efforts in this field. The volume will be useful to students and professional researchers alike, who are interested in using stochastic modeling for probing the nature of earthquake phenomena, as well as an essential ingredient for earthquake forecasting.

Description / Table of Contents: Earthquakes in shallow subduction zones account for the greatest part of seismic energy release in the Earth and often cause significant damage; in some cases they are accompanied by devastating tsunamis. Understanding the physics of seismogenic and tsunamigenic processes in such zones continues to be a challenging focus of ongoing research. The seismologic and geodetic work reported in this volume highlights the recent advances made toward quantifying and understandig the role of shallow plate coupling in the earthquake generation process. The relation between regional seismotectonics, features in the downgoing plate, and the slip distribution in earthquakes are examined for recent and great historical events. In addition to papers reporting new results, review articles on tsunami and tsunamigenic earthquakes and depth dependent plate interface properties are presented. These observational results, along with complementary laboratory and theoretical studies, can assist in assessing the seismic potential of a given region.

Description / Table of Contents: The invasion of the land by plants (‘terrestrialization’) was one of the most significant evolutionary events in the history of life on Earth, and correlates in time with periods of major palaeoenvironmental perturbations. The development of a vegetation cover on the previously barren land surfaces impacted on the global biogeochemical cycles and the geological processes of erosion and sediment transport. The terrestrialization of plants preceded the rise of major new groups of animals, such as insects and tetrapods, the latter numbering some 24 000 living species, including ourselves. Early land-plant evolution also correlates with the most spectacular decline of atmospheric CO2 concentration of Phanerozoic times and with the onset of a protracted period of glacial conditions on Earth. This book includes a selection of papers covering different aspects of the terrestrialization, from palaeobotany to vertebrate palaeontology and geochemistry, promoting a multidisciplinary approach to the understanding of the co-evolution of life and its environments during Early to Mid-Palaeozoic times.

Description / Table of Contents: The Mesozoic Era begins with the approximately 50-million-year-long Triassic Period, a major juncture in Earth history when the vast Pangaean supercontinent completed its assembly and began its fragmentation, and the global biota diversified and modernized after the end-Permian mass extinction, the most extensive biotic decimation of the Phanerozoic. The temporal ordering of geological and biotic events during Triassic time thus is critical to the interpretation of some unique and pivotal events in Earth history. This temporal ordering is mostly based on the Triassic timescale, which has been developed and refined for nearly two centuries. This book reviews the state of the art of the Triassic timescale and includes comprehensive analyses of Triassic radio-isotopic ages, magnetostratigraphy, isotope-based and cyclostratigraphic correlations and timescale -relevant marine and non-marine biostratigraphy.

Description / Table of Contents: This volume contains a collection of stratigraphic and diagenetic case studies of Mesozoic and Cenozoic carbonate sequences from the Tethyan realm. High levels of industry and academic interest in the region have generated numerous multi-disciplinary studies of these sequences, a selection of which are presented in this volume. The studies presented are based on both comprehensive subsurface datasets from important hydrocarbon-bearing strata of the Middle East and the excellent surface exposures in the region of interest. The studies presented in this volume may serve as suitable starting points in the development of age and architecture specific carbonate reference models. Such models can form the basis of internally consistent models for carbonate deposition, sequence development and reservoir performance. Ideally such models, suitably scaled, will be equally applicable to academic studies, the exploration and development phases of the field life cycle and in the prediction of future reservoir performance.

Description / Table of Contents: Disequilibrium textures versus equilibrium modelling: geochronology at the crossroads / Igor M. Villa / Geological Society, London, Special Publications, 332, 1-15, 1 January 2010, https://doi.org/10.1144/SP332.1 --- Argon enters the retentive zone: reassessment of diffusion parameters for K-feldspar in the South Cyclades Shear Zone, Ios, Greece / M. A. Forster and G. S. Lister / Geological Society, London, Special Publications, 332, 17-34, 1 January 2010, https://doi.org/10.1144/SP332.2 --- Serrated quartz grain boundaries, temperature and strain rate: testing fractal techniques in a syntectonic granite / Manish A. Mamtani and R. O. Greiling / Geological Society, London, Special Publications, 332, 35-48, 1 January 2010, https://doi.org/10.1144/SP332.3 --- Microstructure and elastic anisotropy of naturally deformed leucogneiss from a shear zone in Montalto (southern Calabria, Italy) / Rosolino Cirrincione, Eugenio Fazio, Renée Heilbronner, Hartmut Kern, Kurt Mengel, Gaetano Ortolano, Antonino Pezzino and Rosalda Punturo / Geological Society, London, Special Publications, 332, 49-68, 1 January 2010, https://doi.org/10.1144/SP332.4 --- Geometry of intercrystalline brine in plastically deforming halite rocks: inference from electrical resistivity / Tohru Watanabe / Geological Society, London, Special Publications, 332, 69-78, 1 January 2010, https://doi.org/10.1144/SP332.5 --- Brittle plus plastic deformation of gypsum aggregates experimentally deformed in torsion to high strains: quantitative microstructural and texture analysis from optical and diffraction data / M. Zucali, V. Barberini, D. Chateigner, B. Ouladdiaf and L. Lutterotti / Geological Society, London, Special Publications, 332, 79-98, 1 January 2010, https://doi.org/10.1144/SP332.6 --- Numerical modelling of spontaneous slab breakoff dynamics during continental collision / Cyrill Baumann, Taras V. Gerya and James A. D. Connolly / Geological Society, London, Special Publications, 332, 99-114, 1 January 2010, https://doi.org/10.1144/SP332.7 --- Present-day vertical isostatic readjustment of the Western Alps revealed by numerical modelling and geodetic and seismotectonic data / Annalisa Gardi, Stéphane Baize and Oona Scotti / Geological Society, London, Special Publications, 332, 115-128, 1 January 2010, https://doi.org/10.1144/SP332.8 --- Block model versus thermomechanical model: new insights on the present-day regional deformation in the surroundings of the Calabrian Arc / Raffaele Splendore, Anna Maria Marotta, Riccardo Barzaghi, Alessandra Borghi and Letizia Cannizzaro / Geological Society, London, Special Publications, 332, 129-147, 1 January 2010, https://doi.org/10.1144/SP332.9 --- The role of mantle hydration in continental crust recycling in the wedge region / Marco Meda, Anna Maria Marotta and Maria Iole Spalla / Geological Society, London, Special Publications, 332, 149-172, 1 January 2010, https://doi.org/10.1144/SP332.10 --- Three-dimensional evaluation of fabric evolution and metamorphic reaction progress in polycyclic and polymetamorphic terrains: a case from the Central Italian Alps / Francesca Salvi, Maria Iole Spalla, Michele Zucali and Guido Gosso / Geological Society, London, Special Publications, 332, 173-187, 1 January 2010, https://doi.org/10.1144/SP332.11 --- The interaction of deformation and metamorphic reactions / Bruce E. Hobbs, Alison Ord, Maria Iole Spalla, Guido Gosso and Michele Zucali / Geological Society, London, Special Publications, 332, 189-223, 1 January 2010, https://doi.org/10.1144/SP332.12

Description / Table of Contents: 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.

Description / Table of Contents: In the last decade of the 20th century, there has been great progress in the physics of earthquake generation; that is, the introduction of laboratory-based fault constitutive laws as a basic equation governing earthquake rupture, quantitative description of tectonic loading driven by plate motion, and a microscopic approach to study fault zone processes. The fault constitutive law plays the role of an interface between microscopic processes in fault zones and macroscopic processes of a fault system, and the plate motion connects diverse crustal activities with mantle dynamics. An ambitious challenge for us is to develop realistic computer simulation models for the complete earthquake process on the basis of microphysics in fault zones and macro-dynamics in the crust-mantle system. Recent advances in high performance computer technology and numerical simulation methodology are bringing this vision within reach. The book consists of two parts and presents a cross-section of cutting-edge research in the field of computational earthquake physics. Part I includes works on microphysics of rupture and fault constitutive laws, and dynamic rupture, wave propagation and strong ground motion. Part II covers earthquake cycles, crustal deformation, plate dynamics, and seismicity change and its physical interpretation. Topics covered in Part I range from the microscopic simulation and laboratory studies of rock fracture and the underlying mechanism for nucleation and catastrophic failure to the development of theoretical models of frictional behaviors of faults; as well as the simulation studies of dynamic rupture processes and seismic wave propagation in a 3-D heterogeneous medium, to the case studies of strong ground motions from the 1999 Chi-Chi earthquake and seismic hazard estimation for Cascadian subduction zone earthquakes.

Description / Table of Contents: Tsunamis like the Indian Ocean tsunami caused by the Sumatra-Andaman earthquake in 2004 or the Chilean earthquake in the Pacific Ocean in 1960 motivate international collaborations for the development of tsunami warning systems. Since 1960 the Tsunami Commission, established by the International Union of Geodesy and Geophysics, has been holding a biannual International Tsunami Symposium (ITS). This volume contains 20 contributions of leading scientists mostly presented at the 22nd International Tsunami Symposium held in summer 2005 in Greece. Consolidated findings based on hydrophone records, seismometer readings, and tide gauges are presented. Reports of post-tsunami surveys and numerical simulations for tsunamis such as the 2004 Indian Ocean event, as well as geological studies of tsunamis in Japan, Central and North America are given. Probabilistic tsunami hazard analysis and tsunami warning systems, among others, are described as are methods to predict tsunamis and mitigate their hazards.

Description / Table of Contents: Weather and climate are of concern to virtually all countries worldwide. For many countries the economy depends largely on agriculture, which is significantly affected by variations in weather and climate. This volume contains many original findings on weather and climate related to atmospheric and oceanic processes through mathematical modeling, numerical simulations, and field experiments and it will be useful as a reading material in graduate level courses dealing with weather, climate, boundary layer and air quality. The scientific community at large, especially younger scientists, will find this book a useful addition to their personal and institutional libraries.

Description / Table of Contents: This wide area of the Alpine–Himalayan belt evolved through a series of tectonic events related to the opening and closure of the Tethys Ocean. In doing so it produced the largest mountain belt of the world, which extends from the Atlantic to the Pacific oceans. The basins associated with this belt contain invaluable information related to mountain building processes and are the locus of rich hydrocarbon accumulations. However, knowledge about the geological evolution of the region is limited compared to what they offer. This has been mainly due to the difficulty and inaccessibility of cross-country studies. This Special Publication is dedicated to the part of the Alpine–Himalayan belt running from Bulgaria to Armenia, and from Ukraine to the Arabian Platform. It includes twenty multidisciplinary studies covering topics in structural geology/tectonics; geophysics; geochemistry; palaeontology; petrography; sedimentology; stratigraphy; and subsidence and lithospheric modelling. This volume reports results obtained during the MEBE (Middle East Basin Evolution) Programme and related projects in the circum Black Sea and peri-Arabian regions.

Description / Table of Contents: The Earth's climate varies through geological time as a result of external, orbital processes, as well as the positions of continents, growth of mountains and the opening and closure of oceanic gateways. Climate modelling suggests that the intensity of the Asian monsoon should correlate, at least in part, with the uplift history of the Tibetan Plateau and the Himalaya, as well as the evolution of gateways and the retreat of shallow seas in Central Asia. Long-term reconstructions of both mountain building and monsoon activity are key to testing the proposed links. This collection of papers presents a series of new studies documenting the variations of the Asian monsoon on orbital and tectonic timescales, together with the impact this has had on environmental conditions. The issue of which proxies are best suited to measuring monsoons is addressed, as is the effect that the monsoon has had on erosion and the formation of the stratigraphic record both on and offshore.

Description / Table of Contents: GENERAL --- Faunal turnover and depth stratification: their relationships to climate and productivity events in the Eocene to Miocene pelagic realm / Keller, Gerta and Macleod, Norman / pp. 1-14 --- Pacific carbonate cycles revisited: arguments for and against productivity control / Berger, W. H. / pp. 15-25 --- FORAMINIFERA --- The paleogeography, evolution and extinction of Late Miocene-Pleistocene planktonic foraminifera from the Southwest Pacific / Jenkins, D. Graham / pp. 27-35 --- Canderotalia, a new Middle Miocene planktonic foraminiferal genus of the family Candeinidae / Saito, Tsunemasa / pp. 37-41 --- Paleogeography and paleoceanography during the middle Miocene in the Fossa-Magna and Kanto regions, Central Japan / Oda, Motoyoshi and Akimoto, Kazumi / pp. 43-50 --- Faunal succession of benthic foraminifera in the upper Yatsuo Group of the Hokuriku district, central Japan—a temporal faunal trend during an Early-Middle Miocene transgression in Japan / Hasegawa, Shiro and Takahashi, Toshihiro / pp. 51-66 --- Some features of the Pleistocene paleo-circulation in the eastern equatorial Indian Ocean (by Foraminifera) / Belyaeva, N. V. and Burmistrova, I. I. / pp. 67-70 --- Distribution of foraminifera in estuarine deposits: a comparison between Asia, Europe and Australia / Wang, Pinxian / pp. 71-83 --- Benthic foraminiferal species diversity pattern in a Late Miocene-Early Pliocene sequence of Neill Island, Andaman Sea / Sharma, V. and Kumar, R. / pp. 85-89 --- Planktonic foraminifera from the Navidad Formation, Chile: their geologic age and palcoceanographic implications / Ibaraki, Masako / pp. 91-95 --- Foraminiferal evidence for the sources and timing of mass-flow deposits south of Baltimore Canyon / Thompson, Peter R. / pp. 97-128 --- Paleogene zonal scales based on planktonic foraminifers and their significance for elaboration of the Paleogene stratigraphic schemes of the Pacific high latitudes / Krasheninnikov, V. A., Sernova, M. Ya. and Basov, I. A. / pp. 129-141 --- Planktonic foraminiferal biostratigraphy of Middle Eocene to Early Oligocene rocks in southern Kyushu, Japan / Nishi, Hiroshi / pp. 143-174 --- Neogene planktonic foraminiferal biochronology of the DSDP sites along the Ninetyeast Ridge, northern Indian Ocean / Srinivasan, M. S. and Chaturvedi, S. N. / pp. 175-188 --- Notes on marine Quaternary sediments newly found in the west coastal area of the Satsuma Peninsula, Kyushu, Japan, with special reference to the benthic foraminiferal assemblages / Oki, Kimihiko and Yamamoto, Hideshi / pp. 189-205 --- Depth distribution of Recent benthic foraminifera on the continental shelf and uppermost slope off southern Akita Prefecture, Northeast Japan (The Eastern Japan Sea) / Matoba, Yasumochi and Fukasawa, Kazue / pp. 207-226 --- Benthic foraminifera from brackish lake Nakanoumi, San-in district, southwestern Honshu, Japan / Nomura, Ritsuo and Seto, Koji / pp. 227-240 --- A distinctive new species of Notorotalia (Foraminiferida) from the basal Miocene of New Zealand / Hornibrook, N. de B. / pp. 241-243 --- Rotaliid foraminifera from the Rembang zone area, north central Java, Indonesia / Kadar, Darwin / pp. 245-256 --- Some Miocene Nephrolepidina (Family Lepidocyclinidae) from the Shimoshiroiwa Formation, Izu Peninsula, Japan / Matsumaru, Kuniteru / pp. 257-265 --- Notes on the specific determination of the genus Tetrataxis / Okimura, Yuji / pp. 267-272 --- Foraminifers from the "Torinosu Limestone" embedded in the Ishido Formation of the Sanchu Cretaceous System, Kanto Mountains, Central Japan / Sashida, Katsuo, Igo, Hisayoshi, Adachi, Shuko and Ito Sayuri / pp. 273-280 --- Cretaceous planktonic foraminiferal biostratigraphy and paleoceanographic events in the Pacific Ocean with emphasis on indurated sediment / Sliter, William V. / pp. 281-299 --- Upper Cretaceous foraminifera in Santonian to Maestrichtian depositional sequences in New Jersey coastal plain / Olsson, R. K. and Usmani, P. A. / pp. 301-315 --- Campanian planktonic foraminifers and ostracodes from Hobetsu, Hokkaido, northern Japan. Part 1. Planktonic foraminifers / Kaiho, Kunio / pp. 317-325 --- OSTRACODES --- Campanian planktonic foraminifers and ostracodes from Hobetsu, Hokkaido, northern Japan. Part 2. Ostracodes / Ishizaki, Kunihiro / pp. 327-333 --- Some aquatic and terrestrial animals from brackish deposits of Okinawa-jima, southern Japan / Nohara, Tomohide and Ohshiro, Itsuro / pp. 335-337 --- Modem ostracode fauna from Otsuchi Bay, the Pacific coast of northeastern Japan / Ikeya, Noriyuki, Zhou, Bao-chun and Sakamoto, Jun-ichi / pp. 339-354 --- CONODONTS --- Morphological variation in Spathian conodont Spathoicriodus collinsoni (Solien) from the Taho Limestone, Japan / Koike, Toshio / pp. 355-364 --- RADIOLARIANS --- Radiolarian age of the Lower Yezo Group and the upper part of the Sorachi Group in Hokkaido / Taketani, Yojiro and Kanie, Yasumitsu / pp. 365-373 --- Late Jurassic Radiolaria from the Kowhai Point Siltstone, Murihiku Terrane, North Island, New Zealand / Aita, Yoshiaki and Grant-Mackie, J. A. / pp. 375-382 --- Radiolarian faunas discovered from the Permian Yoshii Group in Okayama Prefecture, western Japan / Sada, Kimiyoshi, Takata, Yoshio and Oho Yukimasa / pp. 383-387 --- Middle Paleozoic radiolarians of the genus Ceratoikiscum from Japan / Ishiga, Hiroaki / pp. 389-397 --- DIATOMS --- Distribution of diatom species in the surface sediments of Lutzow-Holm Bay, Antarctica / Tanimura, Yoshihiro / pp. 399-411 --- Neogene diatom datum levels in the equatorial and north Pacific / Barron, John A. / pp. 413-425 --- Diatom biometry of the Miocene index Denticulopsis hyalina / Maruyama, Toshiaki / pp. 427-437 --- OTHER SILICEOUS FOSSILS --- Geological significance of siliceous microfossils from Dogo, Oki Islands / Ling, Hsin Yi and Kobayashi, Hiroaki / pp. 439-447 --- Peridiniacean cyst genus Xandarodinicum in the late Early Miocene Kaminoyama Formation in the western part of Zao Volcano, Yamagata, North Japan / Matsuoka, Kazumi / pp. 449-455 --- CALCAREOUS NANNOFOSSILS --- A stratigraphically significant new species, Reticulofenestra asanoi (Calcareous nannofossil) / Sato, Tokiyuki and Takayama, Toshiaki / pp. 457-460 --- Paleogene calcareous nannofossils from Hokkaido, Japan / Okada, Hisatake and Kaiho Kunio / pp. 461-471 --- POLLEN --- The palyno-flora of early Middle Miocene sediments in the Pohang and Yangnam basins, Korea / Yamanoi, Tohru / pp. 473-480

Description / Table of Contents: 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

Description / Table of Contents: Part I: An integrated framework of disaster risk management --- An Integrated Risk Analysis Framework for Emerging Disaster Risks: Toward a better risk management of flood disaster in urban communities / S. Ikeda / pp. 1-21 --- Fundamental Characteristics of Flood Risk in Japan's Urban Areas / T. Sato / pp. 23-40 --- Integration Framework of Flood Risk Management: What should be integrated? / K. Seo / pp. 41-56 --- Public Preference and Willingness to Pay for Flood Risk Reduction / G. Zhai / pp. 57-87 --- New Mode of Risk Governance Enhanced by an e-community Platform / T. Nagasaka / pp. 89-107 --- Part II: Interdisciplinary studies of flood risk --- Uncertainty in Flood Risks and Public Understanding of Probable Rainfall / S. Shimokawa and Y. Takeuchi / pp. 109-119 --- Public Perception of Flood Risk and Community-based Disaster Preparedness / T. Motoyoshi / pp. 121-134 --- Residents' Perception about Disaster Prevention and Action for Risk Mitigation: The case of the Tokai flood in 2000 / K. Takao / pp. 135-151 --- Roles of Volunteers in Disaster Prevention: Implications of questionnaire and interview surveys / I. Suzuki / pp. 153-163 --- Issues and Attitudes of Local Government Officials for Flood Risk Management / K. Terumoto / pp. 165-176 --- The Niigata Flood in 2004 as a Flood Risk of "Low Probability but High Consequence" / T. Sato, T. Fukuzono, and S. Ikeda / pp. 177-192 --- Insurance Issues of Catastrophic Disasters in Japan: Lessons from the 2005 Hurricane Katrina Disaster / H. Tsubokawa / pp. 193-198 --- Part III: Pilot studies of implementing social platform of risk management in local community: Participatory flood risk communication support system (Pafrics) --- Participatory Flood Risk Communication Support System (Pafrics) / T. Fukuzono, T. Sato, Y. Takeuchi, K. Takao, S. Shimokawa, I. Suzuki, G. Zhai, K. Terumoto, T. Nagasaga, K. Seo, and S. Ikeda / pp. 199-211 --- Flood Risk Communication with Pafrics / Y. Takeuchi and I. Suzuki / pp. 213-224

Description / Table of Contents: Starting from a more general discussion of mechanisms controlling organic carbon deposition in marine environments and indicators useful for paleoenvironmental reconstructions, this study concentrates on detailed organic-geochemical and sedimentological investigations of late Cenozoic deep-sea sediments from (1) the Baffin Bay and the Labrador Sea (ODP-Leg 105), (2) the upwelling area off Northwest Africa (ODP-Leg 108), and (3) the Sea of Japan (ODP-Leg 128). Of major interest are shortas well as long-term changes in organic carbon accumulation during the past 20 m.y. As shown in the data from ODP-Legs 105, 108, and 128, sediments characterized by similar high organic carbon contents can be deposited in very different environments. Thus, simple total organic carbon data do not allow (i) to distinguish between different factors controlling organic carbon enrichment and (ii) to reconstruct the depositional history of these sediments. Data on both quantity and composition of the organic matter, however, provide important informations about the depositional environment and allow detailed reconstructions of the evolution of paleoclimate, paleoceanic circulation, and paleoproductivity in these areas. The results have significant implications for quantitative models of the mechanisms of climatic change. Furthermore, the data may also help to explain the formation of fossil black shales, i.e., hydrocarbon source rocks. (1) BAFFIN BAY AND LABRADOR SEA The Miocene to Quaternary sediments at Baffin Bay Site 645 are characterized by relatively high organic carbon contents, most of which range from 0.5% to almost 3%. This organic carbon enrichment was mainly controlled by increased supply .of terrigenous organic matter throughout the entire time interval. Two distinct maxima were identified: (i) a middle Miocene maximum, possibly reflecting a dense vegetation cover and fluvial sediment supply from adjacent islands, that decreased during late Miocene and early Pliocene time because of expansion of tundra vegetation due to global climatic deterioration; (ii) a late Pliocene-Pleistocene maximum possibly caused by glacial erosion and meltwater outwash. Significant amounts of marine organic carbon were accumulated in western Baffin Bay during middle Miocene time, indicating higher surface-water productivity (up to about 150 gC m -2 y-l) resulted from the inflow of cold and nutrient-rich Arctic water masses. The decrease in average surface-water productivity to values similar to those of the modern Baffin Bay was recorded during the late Miocene and was probably caused by the development of a seasonal sea-ice cover. At Labrador Sea Sites 646 and 647, organic carbon contents are low varying between 0.10% and 0.75%; the origin of most of the organic matter probably is marine. A major increase in organic carbon accumulation at Site 646 at about 7.2 Ma may indicate increased surface-water productivity triggered by the onset of the cold East-Greeniand Current system. Near 2.4 Ma, i.e., parallel to the development of major Northern Hemisphere Glaciation, accumulation rates of both organic carbon and biogenic opal decreased, suggesting a reduced surface-water productivity because of the development of dosed seasonal sea-ice cover in the northern Labrador Sea. The influence of varying sea-ice cover on surface-water productivity is also documented in the short-term glacial/interglacial fluctuations in organic carbon deposition at Sites 646 and 647. (2) UPWELLING AREAS OFF NORTHWEST AFRICA The upper Pliocene-Quaternary sediments at coastal-upwelling Site 658 are characterized by high organic carbon contents of 4%; the organic matter is a mixture of marine and terrigenous material with a dominance of the marine proportion. The upper Miocene to Quaternary pelagic sediments from close-by non-upwelling Sites 657 and 659, on the other hand, display low organic carbon values of less than 0.5%. Only in turbidites and slumps occasionally intercalated at the latter two sites, high organic carbon values of up to 3% occur. The high accumulation rates of marine organic carbon recorded at Site 658 reflect the high-productivity upwelling environment. Paleoproductivity varies between 100 and 400 gC m "2 y-1 during the past 3.6 m.y. and is clearly triggered by changes in global climate. However, there is no simple relationship between climate and organic carbon supply, i.e., it is not possble to postulate that productivity was generally higher at Site 658 during glacials than during interglacials or vice versa. Changes in the relative importance between upwelling activity (which was increased during glacial intervals) and fluvial nutrient supply (which was increased during interglacial intervals) may have caused the complex productivity record at Site 658. Most of the maximum productivity values, for example, were recorded at peak interglacials and at terminations indicating the importance of local fluvial nutrient supply at Site 658. Near 0.5 Ma, a long-term decrease in paleoproductivity occurs, probably indicating a decrease in fluvial nutrient supply and/or a change in nutrient "content of the upwelled waters. The former explanation is supported by the contemporaneous decrease in terrigenous organic carbon and (river-borne) clay supply suggesting an increase in long-term aridity in the Central Sahara. At Site 660, underneath the Northern Equatorial Divergence Zone, (marine) organic carbon values of up to 1.5% were recorded in upper Pliocene-Quaternary sediments. During the last 2.5 Ma, the glacial sediments are carbonate-lean and enriched in organic carbon probably caused by the influence of a carbonate-dissolving and oxygen-poor deep-water mass. (3) SEA OF JAPAN Based on preliminary results of organic-geochemical investigations, the Miocene to Quaternary sediments from ODP-Sites 798 (Oki Ridge) and 799 (Kita-Yamato-Trough) are characterized by high organic carbon contents of up to 6%; the organic matter is a mixture between marine and terrigenous material. Dominant mechanisms controlling (marine) organic carbon enrichments are probably high-surface water productivity and increased preservations rates under anoxic deep-water conditions. In the lower Pliocene sediments at Site 798 and the Miocene to Quaternary sediments at Site 799, rapid burial of organic carbon in turbidites may have occurred episodically. Distinct cycles of dark laminated sediments with organic carbon values of more than 5% and light bioturbated to homogenous sediments with lower organic carbon contents indicate dramatic shortterm paleoceanographic variations. More detailed records of accumulation rates of marine and terrigenous organic carbon and biogenic opal as well as a detailed oxygen isotope stratigraphy are required for a more precise reconstruction of the environmental history of the Sea of Japan through late Cenozoic time.

Description / Table of Contents: PREFACE The CERN Accelerator School (CAS) was founded in 1983 with the aim to preserve and disseminate the knowledge accumulated at CERN (European Organization for Nuclear Research) and elsewhere on particle accelerators and storage rings. This is being achieved by means of a biennial programme of basic and advanced courses on general accelerator physics supplemented by specialized and topical courses as well as Workshops. The chapters included in this present volume are taken from one of the specialized courses, Applied Geodesy for Particle Accelerators, held at CERN in April 1986. When construction of the first large accelerators started in the 1950's, it was necessary to use geodetic techniques to ensure precise positioning of the machines' components. Since that time the means employed have constantly evolved in line with technological progress in general, while a number of specific developments - many of them achieved at CERN - have enriched the range of available instruments. These techniques and precision instruments are used for most of the world's accelerators but can also be applied in other areas of industrial geodesy: surveying of civil engineering works and structures, aeronautics, nautical engineering, astronomical radio-interferometers, metrology of large dimensions, studies of deformation, etc. The ever increasing dimensions of new accelerators dictates the use of the best geodetic methods in the search for the greatest precision, such as distance measurements to 10 -7, riqorous evaluation of the local geoid and millimetric exploitation of the Navstar satellites. At the same time, the powerful computer methods now available for solving difficult problems are also applicable at the instrument level where data collection can be automatically checked. Above all, measuring methods and calculations and their results can be integrated into data bases where the collection of technical parameters can be efficiently managed. In order to conserve the logical presentation of the different lectures presented at the CAS school, the chapters presented here have been grouped under four main topics. The first and the fourth deal with spatial and theoretical geodesy, while the second and third are concerned with the work of applied geodesy, especially that carried out at CERN. Readers involved in these subjects will find in the following chapters, if not the complete answer to their problems, at least the beginning of solutions to them.

Description / Table of Contents: Digital signal processing has become more and more an integral part of observational seismology. While it offers unprecedented power in extracting information from seismic signals, it comes at the price of having to learn a variety of new skills. Dealing with digital seismic data requires at least a basic understanding of digital signal processing. Taking the calculation of true ground motion as the guiding problem, this course covers the basic theory of linear systems, the design and analysis of simple digital filters, the effect of sampling and A/D conversion and an introduction to spectral analysis of digital signals. It contains a number of examples and exercises that can be reproduced using the PITSA software package (Scherbaum and Johnson 1993) or similar programs.

Description / Table of Contents: INTRODUCTION The evaporite deposits of the Werra district, especially in the Hattorf mining field, are considered a worldwide unique location for the occurence of numerous basalt dikes and magmatic fluid phases fixed in salt rocks. In spite of the great number of studies dealing with the magmatites in the Werra region, previous investigations have rarely attempted more than a predominantly 'qualitative' description of the basaltic rocks and the effects of volcanism on the evaporites (see Chapter 2). The method of interpreting the mineralogical and chemical composition of the evaporites at the basalt contact is based on previous works (KNIPPING 1984; KNIPPING & HERRMANN 1985). This study should contribute to understanding (i) the mechanism of intrusion of the basaltic rnelts and (ii) the metamorphic processes occurring in the evaporites caused by mobile phases during volcanism. Hence, the following methods were applied: The mineralogical and chemical description of the basaltic rocks with recent nomenclature including the possible differences between individual dikes and between surface- and subsurface-exposed basalts. Seven surface and 48 subsurface exposures at the Hattorf mine of Kali & Salz AG were studied. Application of the most recent knowledge on basalt genesis for interpreting observational and experimental results. Studies on the sulfur and carbon isotope distributions of the native sulfur from several subsurface exposures and the enrichments of gases (predominantly CO2) in the evaporites. Calculation of the spatial and temporal temperature distribution in the evaporite rocks following intrusion of the basaltic melts. For purposes of clarity a few of the terms which will be used frequently here will first be defined: basalt - all of the intrusive rocks studied can be assigned mineralogically and chemically to the basalt family in a broader sense. Thus, the terms basaltic rock or, in short, basalt will be used for these rocks. rock salt - instead of the term salt for halitic rocks the term rock salt is used. Besides, the evaporites are generally designated as host rocks (for the basalt dikes) as well. gases - especially in the German literature the term carbon dioxide or carbonic acid (= Kohlensäure) is frequently used for the gases enclosed in the evaporites of the Werra-Fulda district. ACKERMANN et al (1964) found, in addition to carbon dioxide, considerable amounts of nitrogen and minor amounts of methane. In the following therefore the terms gas mixture or gas will be used. The various basalt dikes found in the Hattorf mining field are described here in terms of their mineralogy and geochemistry for the first time. In doing so it is necessary to number them from east to west. To avoid confusion with older numerations (e.g. SIEMENS 1971) the various dike systems are designated by capital letters (A to P).

Description / Table of Contents: PREFACE The Lower Triassic Buntsandstein in Middle Europe which originated in mainly continental fluvla] environment in the Mid-European Triassic Basin is a famous terrestrial red bed sequence that is discussed in the geological literature since more than 200 years. Much of the earlier work had been devoted to stratigraphical, palaeogeographical and petrographical problemsof the Buntsandstein. The sedimentological analysis and deposltional modelling in the German-type facies, however, is the youngest branch of Buntsandstein investigation and started only a few decades ago. During the last ten years when I began to concentrate on the interpretation of the genesis of the Buntsandstein, much work has been carried out and has already been documented in numerous papers that focussed on various aspects of sedimentology, particularly on reconstruction of fluvial and aeolian depositional mechanisms, significance of palaeosols, importance of fluvial conglomerates, palaeoecology of the fossils, interdisciplinary sedimentology, diagenesis of heavy minerals and origin of the red colour. A summary of the present knowledge in the western part of the German Basin is given in a compilation of regional articles together with general discussions and comparative contributions and especially with an extensive colour photographic documentation in an earlier book (reference on p. 12). In the last few years when more and more material became available not only from the Buntsandstein s. str. (Lower Triassic Scythian) in the Mid-European Triassic Basin, but also from correlative sequences in adjoining areas and even older or younger series of similar facies and origin, it became more and more evident that a synthesis of the state of the art would be necessary, if not inevitably for outlining the general frame and illustrating the diversification of facies associations in numerous temporal and spatial scales. That is why I decided to edit an international proceedings volume on the Buntsandstein which is to compile contributions from many regions and different stratigraphic units with emphasis on various aspects of fluvia] sedi~ntation, but stressing also the importance of the distribution of associated environments such as aeolian dunes and calcrete palaeosols. In spite of my own enthusiasm for the Buntsandstein continental red bed formation (the Lower Triassic red rocks seem to have a very special flavour for being so attractive for me) and regardless of the expansion of my investigations from my original Eife] area (where I learnt how to assess the facies assoCiations in terms of depositional modelling and where I collected an enormous amount of data that served as a valuable base for the production of various case studies which were published during the last years) to several other regions, it was without any doubt that it would not be possible for me alone to finish such an overregional proceedings book within a reasonable time, but that I had to beg various colleagues for their collaboration by writing papers on the Buntsandstein in their investigated areas for this volume. Although the response to my first and second circulars soon showed that it would not be possible to publish a compilation of articles from almost all the studied regions, formations and aspects within a reasonable time with avoiding too much delay of appearance for early contributors, I am very happy that finally many colleagues provided me with papers from almost all the countries in Europe where Buntsandstein is cropping out at the surface. In spite of the tremendous editorial work which was necessary to polish the English, to improve the contents of text and drawings and to put the sequence of papers into a general stream line, I would like to thank all my colleagues who contributed to this volume for their support of the project and particularly for their understanding of my editorial task, especially in case of my frequently serious intervention into their early manuscripts and illustrations. Looking for a publisher in the early stages of planning the volume, I found immediately support by Dr. W. Engel (Department of Geological Sciences of the Springer- Verlag) who generously offered me to take the book into the newly founded series "Lecture Notes in Earth Sciences". From the beginning of organization, writing and editing, I appreciated very much the close cooperation with Dr. Engel who always had an ear for my problems and gave me the necessary freedom to finish the volume along the lines of my intention. Although the preparation of the camera-ready manuscript leaves nearly all the work and responsibility with the author, I am especially grateful to Dr. Engel for his guarantee of almost immediate publication after receipt of the final manuscript which allowed me to polish and incorporate latest ideas up to the very terminal moment. Writing on a subject like the Buntsandstein which has proven to be considerably diversified in terms of sedimentary processes and depositional mechanisms, it became soon apparent that a full discussion along my original intention would easily end up with several thousands of pages in size and would consume much more than a few years. Having already rePeatedly experienced in the past that during course of incorporation of nearly all the relevant literature, the reference l i s t of the final paper is often longer than the whole first draft of the article after one or two years collection of data and ideas, there was no other way than to decide to keep the bibliography short. In order to restrict the book to an economical frame and not to frighten the readership to death, but especially to avoid drowning of the red line through the volume, many contributions had to be written as summary presentations without detailed discussion of the literature. Speaking particularly for the articles that have been written by myself either alone or together with friends, I can assure that this is by no means the result of proud neglectance of other works, but only the necessity of streamlining of the book, and that much of the detailed discussion of comparative examples from the literature has to be done in subsequent special papers. It is impossible to acRnowledge all the people that helped me to arrive at the present goal. Special merits, however, deserve those who stimulated my interest for the Buntsandstein. I am especially indebted to Prof. Dr. G. Fuchs (Landessammlungen fur Naturkunde, Karlsruhe) who proposed me ten years ago to work on the Eifel Buntsandstein for my M.Sc. Thesis, and who later supervised together with Prof. Dr. W. Dachroth (Department of Geology and Palaeontology, University of Heidelberg) the preparation of my Ph.D. Thesis. The good luck of the former to choose the Eifel for me as a starting region (which later proved to have a key position for approaching the evolution of fluvial sedimentation in many other Buntsandstein areas), and the earlier investigations of the latter (although largely unpublished and even only briefly touched in his contribution to this volume) triggered my love of the Buntsandstein which has reached a preliminary climax with the present book. It is my pleasure to dedicate this volume to my two former supervisors with very many thanks for their support and in honour of their merit to have lighted the fire. It is my sincere wish to acknowledge again all the people who contributed with articles to this volume for their help to prepare this summary of the state of the art of Buntsandstein fluvial sedimento]og~y. I also want to sincerely thank all friends and colleagues who supplied ideas and facts in oral or written form and who guided me in the field during course of my comparative investigations that helped me considerably in proceeding with the interpretation of the Buntsandstein. Thanks are also due to Helmut Mader (my father) and Martha Herrmann (my aunt) for their support. I am further indebted to those who have been involved in the various technical aspects of the preparation of the manuscript from the beginning of word processor typesetting of the text and reprography of the illustrations to the final printing. I do hope that the compilation of articles on fluvial aspects of the Buntsandstein in this book will stimulate the interest of many people in the topic of sedimentological modelling of terrestrial red bed sequences and will internationally highlight the position of the Buntsandstein as an extraordinarily attractive case history of fluvial deposition.

Description / Table of Contents: Part 1. Landform Modelling, General Considerations --- The Paradox of Equivalence of the Davisian End-Peneplain and Penckian Primary Peneplain / Hiroo Ohmori / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 3-32 --- Geomorphology: Boundaries between Media / Robert W. Blair, Jr. / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 33-42 --- Evolution of the Ocean Floor Morphostructure: Actualistic Model / Alexander V. Ilyin / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 43-59 --- Scale-Specific Landforms and Aspects of the Land Surface / Ian S. Evans / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 61-94 --- Part 2. Material Transport in Landform Modelling --- Simple Model for the Complex Dynamics of Dunes / Hiraku Nishimori and Hirohisa Tanaka / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 87-100 --- Green's Function of Mass Transport and the Landform Equation / Masashige Hirano / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 101-114 --- Towards Quantitative Modelling of Landform Evolution through Frequency and Magnitude of Processes: A Model Conception / Jochen Schmidt and Nicholas James Preston / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 115-129 --- Part 3. Fluvial Landform Structure: Mathematical and Physical Laws --- Planar Organization of River Networks: A Hidden Gamma Law Structure / Christophe Cudennec, Youssef Fouad and Irianto Sumarjo-Gatot / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 133-145 --- Tiling Properties of Drainage Basins and Their Physical Bases / Eiji Tokunaga / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 147-166 --- Mathematical Modeling of Landforms: Optimality and Steady-State Solutions / Scott D. Peckham / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 167-182 --- Part 4. DEMs, GIS and Modelling in Geomorphology --- A Simple GIS Model for Mapping Landslide Susceptibility / Richard J. Pike, Russell W. Graymer and Steven Sobieszczyk / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 185-197 --- Eigenvector Analysis of Digital Elevation Models in a GIS: Geomorphometry and Quality Control / Peter L. Guth / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 199-220 --- Multiresolution Spline Models and Their Applications in Geomorphology / Jan Rasmus Sulebak and Øyvind Hjelle / Concepts and Modelling in Geomorphology: International Perspectives, / pp. 221-237

Description / Table of Contents: This volume contains the proceedings of a symposium held at Freiburg im Breisgau, October 7-11, 1990. The symposium was sponsored mainly by the Deutsche Forschungsgemeinschaft (DFG), by the Geological Institute of the University of Freiburg, and by the International Association of Mathematical Geology. We thank these and all other sponsors of the meeting. The symposium whose participants came from more then twenty countries was the first international meeting dedicated entirely to geological applications of threedimensional computer graphics, a rapidly growing field of scientific visualization in geology. The selection of papers in this volume covers a wide range of methods developed in the last decade.

Description / Table of Contents: PREFACE There are problems, when applying statistical inference to the analysis of data, which are not readily solved by the inferential methods of the standard statistical techniques. One example is the computation of confidence intervals for variance components or for functions of variance components. Another example is the statistical inference on the random parameters of the mixed model of the standard statistical techniques or the inference on parameters of nonlinear models. Bayesian analysis gives answers to these problems. The advantage of the Bayesian approach is its conceptual simplicity. It is based on Bayes' theorem only. In general, the posterior distribution for the unknown parameters following from Bayes' theorem can be readily written down. The statistical inference is then solved by this distribution. Often the posterior distribution cannot be integrated analytically. However, this is not a serious drawback, since efficient methods exist for the numerical integration. The results of the standard statistical techniques concerning the linear models can also be derived by the Bayesian inference. These techniques may therefore be considered as special cases of the Bayesian analysis. Thus, the Bayesian inference is more general. Linear models and models closely related to linear models will be assumed for the analysis of the observations which contain the information on the unknown parameters of the models. The models, which are presented, are well suited for a variety of tasks connected with the evaluation of data. When applications are considered, data will be analyzed which have been taken to solve problems of surveying engineering. This does not mean, of course, that the applications are restricted to geodesy. Bayesian statistics may be applied wherever data need to be evaluated, for instance in geophysics. After an introduction the basic concepts of Bayesian inference are presented in Chapter 2. Bayes' theorem is derived and the introduction of prior information for the unknown parameters is discussed. Estimates of the unknown parameters, of confidence regions and the testing of hypotheses are derived and the predictive analysis is treated. Finally techniques for the numerical integration of the integrals are presented which have to be solved for the statistical inference. Chapter 3 introduces models to analyze data for the statistical inference on the unknown parameters and deals with special applications. First the linear model is presented with noninformative and informative priors for the unknown parameters. The agreement with the results of the standard statistical techniques is pointed out. Furthermore, the prediction of data and the linear model not of full rank are discussed. A method for identifying a model is presented and a less sensitive hypothesis test for the standard statistical techniques is derived. The Kalman-Bucy filter for estimating unknown parameters of linear dynamic systems is also given. Nonlinear models are introduced and as an example the fit of a straight line is treated. The resulting posterior distribution for the unknown parameters is analytically not tractable, so that numerical methods have to be applied for the statistical inference. In contrast to the standard statistical techniques, the Bayesian analysis for mixed models does not discriminate between fixed and random parameters, it distinguishes the parameters according to their prior information. The Bayesian inference on the parameters, which correspond to the random parameters of the mixed model of the standard statistical techniques, is therefore readily accomplished. Noninformafive priors of the variance and covariance components are derived for the linear model with unknown variance and covariance components. In addition, informative priors are given. Again, the resulting posterior distributions are analytically not tractable, so that numerical methods have to be applied for the Bayesian inference. The problem of classification is solved by applying the Bayes rule, i.e. the posterior expected loss computed by the predictive density function of the observations is minimized. Robust estimates of the standard statistical techniques, which are maximum likelihood type estimates, the so-called M-estimates, may also be derived by Bayesian inference. But this approach not only leads to the M-estimates, but also any inferential problem for the parameters may be solved. Finally, the reconstruction of digital images is discussed. Numerous methods exist for the analysis of digital images. The Bayesian approach unites some of them and gives them a common theoretical foundation. This is due to the flexibility by which prior information for the unknown parameters can be introduced. It is assumed that the reader has a basic knowledge of the standard statistical techniques. Whenever these results are needed, for easy reference the appropriate page of the book "Parameter Estimation and Hypothesis Testing in Linear Models" by the author (Koch 1988a) is cited. Of course, any other textbook on statistical techniques can serve this purpose. To easily recognize the end of an example or a proof, it is marked by a A or a t~, respectively. I want to thank all colleagues and students who contributed to this book. In particular, I thank Mr. Andreas Busch, Dipl.-Ing., for his suggestions. I also convey my thanks to Mrs. Karin Bauer, who prepared the copy of the book. The assistance of the Springer- Verlag in checking the English text is gratefully acknowledged. The responsibility of errors, of course, remains with the author.

Description / Table of Contents: Biolaminated deposits, produced by microbial communities, were studied in modern peritidal environments and in the rock record. The term microbial, mat refers to modern, the term stromatolite to ancient analogs. The term biolaminated deposits was used to encompass both microbial mats and stromatolites. Microbial mat environments studied are the Gavish Sabkha, the Solar Lake, both hypersaline back-barrier systems at the Gulf of Aqaba, Sinai Peninsula, and the "Farbstreifen-Sandwatt" (versicolored sandy tidal flats) on Mellum, an island in the estuary embayment of the southern North Sea coast. Three facies-relevant categories were distinguished: (i) the mat-forming microbiota, (2) environmental conditions controlling mat types and lithology, (3) bioturbation and grazing. Cyanobacteria account for biogenic sediment accretion in all cases studied. Three major groups occur: filamentous cyanobacteria, coccoid unicells with binary fission and those with multiple fission. In the presence of these groups the following mat types evolve: (i) continuously flat (stratiform) L~-laminae (occur in all environments studied); (2) translucent, vertically extended Lv-laminae (only Gavish Sabkha and Solar Lake); (3) nodular granules (only Gavish Sabkha). Basically, the development of mats is controlled by moisture. Thus high-lying parts where the groundwater table runs more than 40 cm below surface are bare of mats. These are: The circular slope and elevated center of the Gavish Sabkha, the shorelines of the Solar Lake and the episodically flooded upper supratidal zone of Mellum Island. The following situations of water supply were found to stimulate mat growth: (i) Capillary movement of groundwater to exposed surfaces, (2) shallowest calm water, both realized in the Gavish Sabkha and the Solar Lake. On Mellum Island, mats form in the lower supratidal zone, which is flooded in the spring tide cycle and wetted during low tide by capillary groundwater. Salinity is almost that of normal seawater, whereas in the Solar Lake, it ranges from 45 °/oo to 180 °/oo and in the Gavish Sabkha, it reaches more than 300 °/oo. Salinity increase is correlated with rising concentrations of magnesium and sulfate ions. In the Gavish Sabkha, episodic sheetfloods cause high-rate sedimentation which is accidental to the living mats. Episodic low-rate sedimentation stimulates the mats to grow through the freshly deposited sediment layer. This occurs predominantly on Mellum Island due to eolian transport. Within the Gavish Sabkha, mineralogy of sediments, community structures, standing crops, redox potentials and pH are highly correlative to the increasing evenness in moisture supply which is realized by the inclination of the system below mean sea level. These conditions bring about a lateral sequence of facies types which include (I) siliciclastic biolaminites at the coastal bar base, (2) nodular to biolaminoid carbonates at saline mud flats, (3) regularly stratified stromatolitic carbonates with ooids and oncoids within the hypersaline lagoon, (4) biolaminated sulfate towardthe elevated center. High-magnesium calcite in facies type 3 precipitates around decaying organic matter and forms also the ooids and oncoids. These occur predominantly within hydroplastic Lv-laminae which provide numerous nucleation centers. Within the Solar Lake, facies type 3 (stromatolitic carbonates with ooids and oncoids) is most important, and grows to extraordinary thickness at the lake's shelf. The regular alternation of dark and light laminae results from seasonally oscillating water depths. These conditions couple back over changing light and salinity intensities to changing dominance structures of mat-building communities. Increasing salinity correlates with decreasing water depth and accounts for the relative abundance of coccoid unicells and diatoms, both active producers of extracellular slimes (Lv-laminae). Water depths locally or temporarily increased favor surface colonization by Mic~ocoleu8 chthonoplastes (Lh-laminae). The biolaminated deposits of the versicolored tidal flats on Mellum Island are similar to facies type 1 of the Gavish Sabkha (siliciclastic biolaminites). Differences exist in the lithology: Sediments upon or through which the mats on Mellum Island grow are made up of clean sand. The grains originate predominantly from re-worked glacial sediments and are rounded to well rounded. By contrast, the strong angularity of siliciclastic grains in the Gavish Sabkha clearly shows their status as primary weathering products. In all environments studied, insects play a significant role. Mainly salt beetles contribute to the lebensspuren spectrum. There is no indication that burrowing and grazing beetles and dipterans are detrimental to the growing mat systems. According to the marine fauna, two distributional barriers exist: (i) physical and (2) biogeochemical factors. Physical barriers are (a) hypersalinity and barrier-closing, which restrict the marine fauna in the Gavish Sabkha and the Solar Lake to a few species, mainly meiofaunal elements such as ostracods and copepods. Only in the Gavish Sabkha, one marine gastropod species occurs which colonizes mud flats of lower salinity. A salinity barrier of about 70 °/oo separates the gastropod habitats from the zones of growing mats. Under reduced salinity, the snails are able to destroy the microbial mats completely. (b) Decreasing regularity of flooding in the microbial mat environment of Mellum Island excludes intertidal deformative burrowers such as cockles and lugworms. However, locally the mats are pierced by numerous dwelling traces. These stem from small polychaetes and amphipod crustaceans which are able to spread over the intertidal-supratidal boundary and settle up to the MHWS-Ievel. Biogeochemical barriers are oxygen depletion within the sediments, high ammonia and sulfide contents, which generate through bacterial break-down of organic matter. Within the highly productive mats of Mic~ocoleu8 chthonoplastes on Mellum Island, dwelling traces of marine polychaetes and amphipod crustaceans disappear due to these conditions. The name of the mat-forming species, Microcoleus chthonoplastes, indicates its capacity to form "soils" (Greek chthonos). While lithology is not altered, the presence of Mic~ocoleu8 mats leads to a habitat change which excludes trace-making "arenophile" invertebrate species and favors "chthonophile" species which do not leave traces. Stromatolitic microstructures studied in rock specimens were interpreted using modern analogs: Microcolumnar buildups in Precambrian stromatolites, ooids and oncoids were compared with those of modern microbial mats. The nodular to biolaminoid facies type found in the Gavish Sabkha was suggested to be an analog to the Plattendolomite facies of Permian Zechstein, North Poland. Studies of the Lower Jurassic ironstone of Lorraine clearly indicate that fungi have been involved in the formation of stromatolites, ooids and oncoids. In conclusion, the comparative study of microstructures in microbial mats and stromatolites reveals a better understanding in both fields. In many cases, it was geology which first revealed the similarity of recent forms to those ancient ones and consequently encouraged research into them.

Description / Table of Contents: 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.

Description / Table of Contents: PREFACE It is increasingly necessary to develop industrial and hydraulic engineering constructions under unfavourable geological or geotechnical conditions. Furthermore, it becomes more and more important to build effectively and economically and to find optimal solutions for a long-term steady function of the constructions. This emphatically demands exhaustive information on the structural situations and engineering parameters of local site assessments by areal investigations of the sites and the petrophysical parameters in situ. This requires, however, the use of geophysical techniques. During the last two or three decades international applied geophysics has systematically developed new possibilities for site investigations for the determination of petrophysical parameters in situ as well as for observation of the system building and site. As in "New techniques in engineering", geophysical methods make it possible to develop areal models of subsurface conditions of building sites, to quantify relevant engineering parameters in situ, as well as to analyze the longterm behaviour of the buildings, which are influenced by internal or external factors. With regard to the broad spectrum of applied geophysics, there are few methods, that especially favour application in engineering and groundwater studies. These methods are distinguished by a relatively simple measuring technique and good measuring progress, e.g. the geoelectrical self-potential method, the geoelectrical resistivity method as well as a newly developed devices for geothermic measurements. There exist numerous publications, broadly scattered in the technical literature, concerning the theoretical bases and applications of these methods, but until now, there have been only a few meetings to exchange experience and results on an international level. This was the aim of the symposium "Detection of Subsurface Flow Phenomena by Self-Potential/Geoelectrical and Thermometric Methods", held in Karlsruhe from 14-18 March 1988. An outstanding part of the symposioum was represented by the results of a research project, coordinated by the University of Karlsruhe (Department of Geology and Institute of Soil and Rock Mechanics) and the Federal Waterway Engineering and Research Institute (BAW), Karlsruhe. Regarding the subject "Experiments to ascertain the relations between hydraulic potentials in the underground and the geoelectrical and thermic potentials set off by these", the research work took four years. The project was sponsered by the Volkswagen Foundation/Hannover. The goal was to develop and test objective techniques for detecting leakages in dams, locating, demarcating and designating quantitatively inhomogeneous spheres in dams with the aim of detecting damage and subsurface flow phenomena as soon as possible. The symposium consisted of a three-day lecture meeting with about 40 papers and a summarizing respectively closing roundtable discussion, a visit to the laboratories and to the in situ constructions within the area of BAW developed in the frame of the research project. This included a technical excursion to the Rhine-Staustufe Iffezheim with its very impressive waterway constructions and an excursion to the Geophysical Observatory near Schiltach (Black Forest). The Observatory belongs to the Universities of Karlsruhe and Stuttgart. Approximately 80 scientists from 15 countries participated the symposium. They were welcomed by the Rector of the University, Professor Dr. A. Kunle and the representative of the Federal Ministry of Traffic, Dr. G. Schröder. Professor Dr. H. Hötzl elucidated the scientific problems and the economical importance of the project as a speaker of the research group. The following papers dealt with the fundamental aspects of geoelectrical and thermometric measurements, with the theory of these methods, the state and developing ter~dencies concerning devices, data acquisition, processing and interpretation as well as noise effects. It became clear that the solution of the complex scientific-technical problems of waterway constructions and environmental protection requires broad, interdisciplinary cooperation and international collaboration. Thus it would be possible to minimize the personnel, temporal and economic efforts. The intended cooperation of geoscientists, engineering geologists, building engineers and representatives of other disciplines make it possible, not only to exchange experiences and results relating to international problems unsolved until now, but also to determine new guidelines with regard to the scientific organization of further investigations. Thus in order to inform all interested parties of the main topics of the symposium and to advance international cooperation in the future, the present review includes a part of the papers and reports of the excursions recommended by the participants of the meeting, which have been divided into the following topics: - Introduction to engineering-geophysical problems and attempts at their solution; - Geoelectrical self-potential measurements; - Geoelectrical resistivity measurements; - Geothermic measurements; - Case histories; - Some topics of the roundtable discussion; - Reports concerning the excursions. The editors wish to thank very much all those, who contributed to the success of the symposium and to the publication of the present report. Finally they venture the note, that the authors theirselves are responsible for the content of their papers.

Description / Table of Contents: The present interest in sediments which are rich in organic matter results not only from their economic significance as potential oil and gas source rocks, but also from the fact that their deposition is the result of special environments. Subtle changes in the environmental conditions may result in great variations in the geochemical and petrographical characteristics of the organic matter. Therefore, the study of organic matter-rich sediments can provide a key to past sedimentary conditions. In addition, the elucidation of the depositional controls is of importance for oil and gas exploration strategies, for which the knowledge of source rock distribution and quality is critical. Furthermore, organic matter reacts extremely sensitive to changes in temperature during burial. The result of this sensitivity is the generation of volatile products such as carbon dioxide, water, nitrogen, oil and gas and a reorganization of the solid organic residue. Some of these changes are quantified as maturity parameters which can be used as calibration tools in basin modelling, i.e., in the modelling of temperature histories of sedimentary basins. The use of maturity parameters and other organic matter characteristics as indicators for diagenetic conditions and depositional processes is, however, restricted, if analyses are performed on outcrop samples, because weathering also affects organic matter.

Description / Table of Contents: The study of calcareous bedding rhythms has become an important field in Geology. Often these bedding rhythms are simply interpreted as representations of primary climatic cycles without showing the effects of any appreciable diagenetic overprinting. This study, however, deals predominantly with the diagenetic processes which are usually large and affect both the amplitude and rhythm of carbonate oscillations. The purpose of this textbook is two fold. First, it intends to provide a better understanding of the processes of diagenetic bedding. Secondly, this new approach allows one to quantify and to understand diagenesis in terms of mass exchanges. This is possible through the development of methods which combine chemical data with compaction measurements. These methods can be also used independent of the marl-limestone alternation problem.

Description / Table of Contents: PREFACE This monograph is a compendium of revised papers which were originally presented at the "Ron Mather Symposium on Four-Dimensional Geodesy", 28-31 March, 1989, held at the University of New South Wales, Sydney, Australia. The symposium had the enthusiastic support of the International Association of Geodesy and the Australian Academy of Sciences. The symposium served two purposes: to honour the achievements of the late Professor Ron S. Mather, the distinguished Australian geodesist who died in 1978, and to review and report on the latest developments in four-dimensional geodesy. Four-dimensional geodesy is a convenient term for those geodetic principles and techniques which yield position, gravity and their time variations. In the past geodesists have tended to think of the earth as a static body, save from occasional savage earthquakes or volcanic eruptions. So, why the need to coin the term "four-dimensional geodesy") Because it explicitly recognises that time is an integral part of understanding geodetic measurements. But let's first identify the scope of modern geodesy. Geodesy has traditionally been concerned with two separate, though closely related, topics: accurate positioning of objects on the earth's surface, and mapping the earth's external gravity field. These are still the fundamental tasks of geodesy, although the spheres of application have now extended into space. However, present and emerging geodetic measurement technologies for gravity field mapping and positioning are sensitive to defolTnations of the earth's surface and gravity field. Within the geodetic community, this new emphasis on accounting for the time-varying characteristics of position and gravity has fundamental principles; in particular the establishment and maintenance of appropriate global reference systems for geodesy. At the same time, there has been a growing recognition by the earth sciences in general of the important role of geodesy in studying earth deformations, as well as atmosphere and ocean dynamic phenomena. The geodetic measurements, for example, are taken over time scales of hours to decades, and occasionally to a century or longer. Though this is only a small part of the whole deformation spectrum, it is a very important one. Geodesy bridges the low frequency part of the spectrum available from geological observations, with the high frequency end observed from, for example, seismic instrumentation. It's role in atmospheric and oceanographic studies is as a unique, high precision remote sensing tool. The revolution in geodesy is not, however, restricted to the measurement technology only. It is true that without the advances of space geodesy and terrestrial metrology, the notion of four-dimensional geodesy is a rather academic one. These advances, which now reveal time-variable signals above the measurement noise level, have important implications for all geodetic activities. The geodetic activities we refer to can be identified as: experiment design and measurement processes; definition and maintenance of highly stabie geodetic reference systems; data analysis; and interpretation of position and gravity results. Ultra high precision measurements are of little use without sophisticated analysis tools to extract the small signals in the data. The interpretation of geodetic results will be in error if insufficient attention is paid to ensuring that the reference systems to which the results relate are themselves stable. Clearly four-dimensional geodesy is as much about concepts and principles, as about computers and geodetic equipment. This diversity is reflected in the papers selected for this book. They range over topics related to the modem measurement tools, the reduction and analysis techniques, to the interpretation of geodetic results within the context of problems currently being investigated in the earth sciences. We would like to thank the International Association of Geodesy and the Australian Academy of Sciences for sponsorship of the Symposium. Unisearch Ltd., the commercial arm of the University of New South Wales, was the managing agent, and staff members of the School of Surveying and of Unisearch Ltd. were involved in the organisation of the Symposium. We would like to gratefully acknowledge these excellent contributions. Let us express also our gratitude for the useful guidance which we received from Prof. K. Lambeck, A. Prof. A. Stolz and Dr. R. Coleman of the Scientific Advisory Committee and the continuous support given by Prof. E.W. Grafarend. Sincere thanks are due to the authors of the selected papers for agreeing to contribute to this Monograph, and for their positive cooperation during the production of this volume.

Description / Table of Contents: Cellular growth is an important crystal growth process and offers an interesting example of natural pattern formation. The present work has been undertaken to study cellular growth, especially its pattern formation, both experimentally and numerically. In situ observations of faceted cellular growth clearly revealed cellular interactions in the array of cells. Cell tip splitting and loss of cells were observed to be the two main mechanisms for the adjustment of cell spacings during growth. For the first time, the true time-dependent faceted cellular growth has been modelled properly. The time evolution of faceted cellular growth has demonstrated the dynamical features of cellular growth processes. It was shown that the pattern formation was determined by cellular interactions in the array, either transient or persistent depending on the growth condition. The cellular structures were irregular when persistent interactions occurred, whereas relatively regular structures could be formed once the transient interactions had stopped. As a result of cellular interactions, a finite range of stable cell spacings was found under a given growth condition. Numerical experiments were carried out for k 〉 1 and k 〈 1 (where k is the solute partition coefficient), under a number of different growth conditions. It was found that these two cases were not symmetric as far as solute distribution is concerned; however the pattern formation behaviours were similar. For k 〉 1 shallow cells were retained, while for k 〈 1, the formation of liquid grooves along the cell boundary depended on the growth condition. The solute effect plays an important role in the cellular interactions in the array. The results were compared with experimental observations in thin film silicon single crystals. It is felt that a general behaviour of pattern formation is found and should be expected for other processes such as non-faceted cellular or eutectic growth. In addition, the solute flow in steady state cellular array growth was studied using the point source technique. Preliminary work was carried out to measure steady state non-faceted cell shapes. Heat flow in zone melting was studied numerically.

Description / Table of Contents: PREFACE This volume contains a selection of papers presented and discussed at the COMTAGWorkshop on "Dynamics and Geomorphology of Mountain Rivers". COMTAG (Commission on Theory, Measurement and Application in Geomorphology) is a commission of the International Geographical Union (IGU). The meeting was held in the monastery of Benediktbeuern in the Bavarian Alps in June 1992. The main objective of the meeting was to review the most recent developments in research on river bed dynamics and bedload transport in mountain rivers. Questions of mountain torrent control and environmental protection were also addressed. The general theme of the meeting finds its appropriate scientific and spatial location in the long tradition of bedload transport studies carried out in the fluvially active German Alps, which are often affected by flood and mass movement hazards. The conference provided an impulse for discussions between researchers in the fields of mountain torrent hydrology, water resources management and bedload transport modelling. In the five years preceding the meeting the editors of this volume had headed a DFG (Deutsche Forschungsgemeinschaft) project on "Bedload transport and river bed adjustment in the Lainbach catchment" within the priority programme "Fluvial Geomorphodynamics in the late Quaternary". Results of the investigations and newly developed measurement techniques were introduced to the participants during the meeting and an excursion to the nearby Lainbach River. The meeting was attended by sixty four scientists from fifteen countries. Thirty four papers were presented in sessions on bedload transport in mountain torrents, measurement techniques of solid material transport, mass movements and sediment supply, river bed adjustment and roughness characteristics of steep mountain torrents, models of bedload transport, and catastrophic flooding. From a regional perspective the majority of the contributions dealt with the Alps with a special focus on investigations carried out at the northern fringe of the Alps. Most of the papers presented were submitted for publication, and selected papers have been included in this volume. The workshop was financially supported by the Deutsche Forschungsgemeinschaft, the Commission of the European Communities (Directorate General for Science, Research and Development), the Freistaat Bayern (Ministerium fOr Unterricht, Kultur, Wissenschaft und Kunst) and the US-Army Research and Development Standardization Group. The participants and the organizers are grateful for these grants. We thank the president of COMTAG, Asher Schick, for his friendly support during the preparation and organization of the workshop. We are also very much indebted to the Kathoiische Stiftungsfachhochschule M~nchen and the Salesianer Don Bo~cos, Benediktbeuern, who opened the rooms of the monastery of Benedikbeuern for scientific sessions and social events during the conference. The organization of the meeting would not have been possible without the help of the local and regional administration, water and forest authorities. We highly appreciate this assistance. In addition, the editors thank the Springer-Verlag for the inclusion of the conference proceedings in this series and the colleagues F. Ahnert, J. Bathurst, W. Bechteler, I. Campbell, P. Carling, N.J. Clifford, S. Custer, T. Davies, A. Dittrich, R. Ferguson, K. Garleff, M. Hassan, R. Hey, H. Ibbeken, J. Karte, H. Keller, D. Knighton, J. Laronne, M. Meunier, M.D. Newson, D. Oostwoud-Wijdenes, I. Reed, K.S.Richards, A. Scheidegger and W. Symader for their valuable contributions as reviewers of the manuscripts that were submitted for this volume.

Description / Table of Contents: PREFACE During the so-called Mid-Cretaceous interval, approximately 100 million years ago, the earth experienced a dynamic phase in its geologic history. Enhanced global tectonic activity resulted in a major rearrangment of the continental plates; accelerated spreading rates induced a first-order sea level highstand; intense off-ridge volcanism contributed to a modeled high atmospheric CO 2 rate; climatic conditions fluctuated; and major changes occurred in biologic evolutionary patterns. With the initiation of a gradual change from an equatorial, east-west directed current-circulation pattern to a regime, dominated by south-north and north-south directed current systems, the earth's internal clock was set for Cenozoic, "modern" times. The Mid-Cretaceous dynamic phase is recorded in a suite of sediments of remarkable similarity around the globe. Shallow-water carbonate platforms drowned on a global scale; widespread sediment-starved, glauconite and phosphate- rich sequences developed; and consequently, pelagic sedimentary regimes "invaded" shelf and epicontinental sea areas. This typical "deepening-upward" pattern is well-documented in Mid-Cretaceous sequences along the northern Tethys margin. Shallow-water carbonates are overlain by condensed glauconitic and phosphatic sediments, which, in turn, are blanketed by pelagic carbonates. In this volume, the example of the western Austrian helvetic Alps, built up of inner and outer shelf sediments deposited along the northern Tethys margin, is used to elucidate the paleoceanographic conditions, under which the Mid-Cretaceous triad of platform carbonates, condensed phosphatic and glauconitic sediments, and pelagic carbonates was formed. In the first part, the evolution of this sequence is traced from the demise of the platform (Aptian) to the return of detritus-dominated deposition (Upper Santonian). The second part includes a discussion of the reconstructed paleoceanographic and tectonic variables, their possible interaction, as well as their influence on sediment properties during this period. Special attention is paid to (1) subsidence behavior of the inner, platform-based shelf and the outer shelf beyond the platform, (2) ammonoid paleobiogeography, (3) the northern tethyan current system and its impact on sediment patterns, (4) the influence of an oxygen minimum zone, (5) sediment bypassing mechanisms on the inner shelf, (6) condensation processes, (7) phosphogenesis, (8) relative sea level changes, (9) genesis and the development of unconformities, (10) tectonic phases and their impact on sediment configuration, (11) drowning of the shallow-water carbonate platform, and (12) "asymmetric" sedimentary cycles. The detailed reconstruction of the development of sedimentary patterns both in time and space in this particular area, and its environmental interpretation, given in this volume, may serve as a contribution to a better understanding of the Mid-Cretaceous dynamic phase in earth's history...

Description / Table of Contents: INTRODUCTION Evaporites may form in a spectrum of environments from continental sabkha (playa) to deep basins (see Kendall 1978 a, b, Schreiber 1978, 1986, Friedman and Krumbein 1985, for review). In the last two decades, many ancient evaporite basins have been interpreted using the sabkha model and the deep desiccated basin model, the former not excluding the latter. However, growing evidence has been gathered indicating that most evaporites are formed in subaqueous environments, so that it cannot be reasonably expected that one depositional model alone will explain the entire basin fill. The chapters in this volume discuss characteristic examples of evaporite basins, mostly of moderate size. Aspects of a saline giant, the Zechstein basin of Central and NW Europe, have been considered in Volume 10 of "Lecture Notes in Earth Sciences"...

Description / Table of Contents: This volume contains the contributions which have been presented at the 5. ALFRED WEGENER-Conference , held in Göttingen, Federal Republic of Germany, 21 - 24 May 1986. This conference was the first international meeting of the IGCP Project 216 :"global biological events in earth history". The aim of the conference was, to discuss (a) the state-of-the-art in respect to the recognition of bio-events and to the analysis of their causes (b) the presentation of new data (c) the strategies which are needed for further research, carried out in the international cooperation programme of Project 216. It was intended to achieve with these discussions a more critical approach to the problems of global bio-events.

Description / Table of Contents: PREFACE The emergence of new information from drilling in deep-sea and coastal areas and the surfacing of the plate tectonics theory probably had the greatest impacts in recent decades on the highly accelerated growth of knowledge regarding the evolution of sediments and sedimentary rocks. Studies in recent years have also provided new insights on global sedimentary processes, and isotopic tools in many ways have enhanced our knowledge and have provided even an unexpected added dimension to the mechanisms of some specific processes. Many different uses of isotopic tools in studies of sedimentary processes can be found in the literature, but the information is highly scattered in the vast field of sedimentology. The disseminated state of existing isotopic knowledge on sedimentary systems has undoubtedly deprived many practitioners in the field to fully appreciate the benefits and limitations, and even the apparent confusion, concerning the use of isotopic tools. We have endeavored here to bring together discussions on some major sedimentary systems in the sedimentary cycle and to analyze them according to isotopic evidence. To accomplish such a task required contributions from many individuals. We were fortunate to have friends who accepted to share our goals. We most sincerely thank all the contributors to this book and deeply appreciate their patience and fortitude despite our undue demands on them to reach our objectives...

Description / Table of Contents: PREFACE The search for tin dates back to the earliest days of civilization. For about 40 years, world tin mining has oscillated at a level of 150,000-250,000 t Sn/year, with a mine output in 1989 of 210,000 t Sn (MCS 1990). This figure corresponds to a current annual value of about US$1.5 billion and places tin ninth on the metal market behind iron, gold, uranium, copper, zinc, silver, platinum and nickel. Tin deposits belong to the granite-related ore deposit spectrum which includes many metals vital to current and future technologies such as Cu, W, Mo, U, Nb, Ta, Ag, Au, Sb, Bi, As, Pb, Zn, REE, Be, Ga and Li. The granitic rocks associated with tin and tin-tungsten deposits have long been identified as a special group of granites, the so-called tin granites. These rocks provide a unique opportunity to study the magmatic and hydrothermal history of tin ore formation. Tin granites are more easily identifiable as parent rocks for tin (and tungsten) mineralization than is the case for other mineralized granitic rocks such as molybdenum and copper porphyries. The magmatic molybdenum and copper distribution patterns are more complex (control by sulfide solubilities), and commonly obliterated by fluid interaction. The relatively simple situation of tin granites provides therefore an invaluable opportunity to study some metallogenic aspects of magmatic-hydrothermal ore deposits in general. The present study attempts to develop a general metallogenic model for tin in identifying the essential or relevant processes in tin ore formation. The methodological principle is based, on an interplay between a background of some basic petrogenetic concepts and a number of specific local and regional data on tin deposits and tin provinces, with particular reference to those areas with which the author is most familiar with (Bolivia, SE Asia, Europe). This inductive approach condenses the many apparently specific complexities encountered in individual ore deposits to a few major processes of general importance. The inherent reductionism may have a personal bias which is probably inevitable in any simple and broad-scale picture ("Apr6s tout, la raison est bien I'esclave des passions"; Feyerabend 1979:210). The critical problem of the relevance of those factors chosen for our model can be judged by its degree of consistency and predictive capability for new and analogous cases...

Description / Table of Contents: 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.

Description / Table of Contents: INTRODUCTION The International Summer School of Theoretical Geodesy on Satellite Altimetry in Geodesy and Oceanography was held in Trieste (Italy) from May 25 to June 6, igg2. It was organized by Prof. R. Rummel of the Delft University of Technology and by Prof. F. Sansò of the Politecnico di Milano and was attended by 63 participants and 7 lecturers from 17 countries. The School was hosted by the International Centre of Theoretical Physics of Trieste. Satellite altimetry provides a lot of data that require more and more sophisticated models in order to be interpreted and exploited. One of the main problems related to the practical treatment of the data can be summarized as follows: oceanographers would like to ask geodesists to compute precise orbits and a precise geoid in order to put into evidence the Sea Surface Topography that can be interpreted as an oceanographic signal related to currents and to several physical parameters; on the other hand, geodesists would like to ask oceanographers to a-priori determine the Sea Surface Topography, in order to be able to extract from the altimeter data the geoid and the orbit errors to be used in the gravity field modelling. The solution to this dilemma can only be found in a cooperative frame. An integrated model to be used for a single-step treatment of altimetry is probably far to be defined, so at present geodesists and oceanographers must cooperate to obtain step-wise and iterative modelling of the gravity field and of the oceanographic phenomena. This is precisely the reason why the school on Satellite Altimetry was organized on an interdisciplinary basis...

Description / Table of Contents: In the wake of the disastrous tsunami which struck Papua New Guinea in 1998, this volume presents 20 state-of-the-art contributions on landslide tsunamis, including earthquake characteristics and ground motions, modeling of landslides in geotechnical engineering, field surveys on land and at sea, simulations of past, present, and potential future tsunamis, and theoretical studies of tsunami generation by landslides.

Description / Table of Contents: Part 1 / THE NATURE OF TROPOCHEMICAL CELL-TWINNING / Progress of study of known examples of homologous series based on the TCT mechanism --- Chapter 1 / INTRODUCTION / pp. 1-9 --- Chapter 2 / HETEROVALENT VACANCY-COUPLED SUBSTITUTION / pp. 11-13 --- Chapter 3 / HOMOLOGOUS SERIES IN THE PbS - Bi2S3 SYSTEM AND EXTENDED LILLIANITE HOMOLOGOUS SERIES / pp. 15-57 --- Chapter 4 / HOMOLOGOUS SERIES IN THE MnS - Y2S3 SYSTEM / pp. 59-62 --- Chapter 5 / THE ENSTATITE-IV HOMOLOGOUS SERIES, Me~x/3Mg~2/3Si(x-4)/3Ox or Me~x/3Li~4/3 Si(x-4)/3Ox,WITH Me = Mg, Sc and x = 88, 100, 112 or 124 / pp. 63-111 --- Chapter 6 / HOMOLOGOUS SERIES OF OXYBORATES RELATED TO PINAKIOLITE, (Mg, Mn2+, Fe3+) 1.9Mn3+O2[BO3] / pp. 113-159 --- Part II / NEW EXAMPLES OF HOMOLOGOUS SERIES / Based on the TCT mechanism --- Chapter 7 / THE PLAGIONITE HOMOLOGOUS SERIES, Pb3+2xSb8S15+2x, with x = 0, 1, 2, or 3 / pp. 161-213 --- Chapter 8 / HIGH- TEMPERATURE HOMOLOGOUS SERIES OF LEAD SULFANTIMONITES, xPbS·Sb2S3, WITH x = 2 or 3 / pp. 215-226 --- SUMMARY AND COMMENTS / pp. 227-231 --- APPENDICES --- 1. Contracted twins / pp. 233-234 --- 2. Characterization of distorted coordination polyhedra / pp. 235-251 --- 3. A collection of papers concerning new structure data of the crystalline phases cited or related to those in the text / pp. 253-314

Description / Table of Contents: Early Japanese contributions to space weather research—1945-1960— / A. Nishida / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 1-22 --- Hydrodynamics, magnetohydrodynamics, and astrophysical plasmas / E. N. Parker / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 23-40 --- The 1960s—A decade of remarkable advances in middle atmosphere research / M. A. Geller / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 41-62 --- Hinode "a new solar observatory in space" / S. Tsuneta, L. K. Harra, and S. Masuda / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 63-75 --- Coronal mass ejections and space weather / N. Gopalswamy / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 77-120 / © TERRAPUB, Tokyo, 2009. No claim is made to original U.S. Government works. / [Full text] (PDF 3.9 MB) --- Magnetotail after Geotail, Interball and Cluster: Thin current sheets, fine structure, force balance and stability / L. Zelenyi, H. Malova, A. Artemyev, V. Popov, A. Petrukovich, D. Delcourt, and A. Bykov / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 121-170 --- Simulating solar 'climate' / M. Dikpati / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 171-199 --- Evidence for solar forcing: Some selected aspects / J. Beer and K. McCracken / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 201-216 --- Total solar irradiance variability: What have we learned about its variability from the record of the last three solar cycles? / C. Fröhlich / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 217-230 --- Mechanisms for solar influence on the Earth's climate / J. D. Haigh / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 231-256 --- Variability in the stratosphere: The sun and the QBO / K. Labitzke and M. Kunze / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 257-278 --- Gravity wave coupling from below: A review / R. A. Vincent / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 279-293 --- What we have learnt from CPEA (Coupling Processes in the Equatorial Atmosphere): A review / S. Fukao / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 295-336 --- Vertical coupling by the semidiurnal tide in Earth's atmosphere / J. M. Forbes / Climate and Weather of the Sun-Earth System (CAWSES): Selected Papers from the 2007 Kyoto Symposium, / pp. 337-348

Description / Table of Contents: Plenary Lectures --- Fisheries Management: Status and Challenges / Ichiro Nomura / pp. 1-16 --- Exploring the BOFFFF Hypothesis Using a Model of Southern African Deepwater Hake (Merluccius paradoxus) / John G. Field, Coleen L. Moloney, Louis du Buisson, Astrid Jarre, Tore Stroemme, Marek R. Lipinski and Paulus Kainge / pp. 17-26 --- Effects of Fishing on Inter and Intra Stock Diversity of Marine Resources / Gudrun Marteinsdóttir and Heidi Pardoe / pp. 27-43 --- Knowledge on How To Achieve Sustainable Fisheries / Ray Hilborn / pp. 45-56 --- The Role of Docosahexaenoic and Arachidonic Acids as Determinants of Evolution and Hominid Brain Development / Michael A. Crawford, C. Leigh Broadhurst, Claudio Galli, Kebreab Ghebremeskel, Holm Holmsen, Letten F. Saugstad, Walter F. Schmidt, Andrew J. Sinclair and Stephen C. Cunnane / pp. 57-76 --- Genomics and the Genome Duplication in Salmonids / Ben F. Koop and William S. Davidson / pp. 77-86 --- A Tale of Two Initiatives: Integrated Coastal Management in Xiamen and Batangas Bay Region / Thia-Eng Chua / pp. 87-102 --- Keynote 1: Fisheries and Fish Biology --- Age-validated Longevity of Fishes: Its Importance for Sustainable Fisheries / Gregor M. Cailliet and Allen H. Andrews / pp. 103-120 --- Monitoring Prey Availability via Data Loggers Deployed on Seabirds: Advances and Present Limitations / C. A. Bost, A. Jaeger, W. Huin, P. Koubbi, L. G. Halsey, H. Hanuise and Y. Handrich / pp. 121-137 --- Refocusing Stock Assessment in Support of Policy Evaluation / André E. Punt / pp. 139-152 --- Hatchery Stocking for Restoring Wild Populations: A Genetic Evaluation of the Reproductive Success of Hatchery Fish vs. Wild Fish / Hitoshi Araki / pp. 153-167 --- A Review of Bycatch and Discard Issue Toward Solution / Tatsuro Matsuoka / pp. 169-180 --- Keynote 2: Aquaculture --- Environmental Impact of Aquaculture on Coastal Planktonic Ecosystems / Yngvar Olsen and Lasse Mork Olsen / pp. 181-196 --- Meeting the Future Demand for Aquatic Food through Aquaculture: the Role of Aquatic Animal Health / Melba G. Bondad-Reantaso and Rohana P. Subasinghe / pp. 197-207 --- Keynote 3: Biotechnology --- Spermatogonial Transplantation in Fish: Production of Trout Offspring from Salmon Parents / Tomoyuki Okutsu, Yutaka Takeuchi and Goro Yoshizaki / pp. 209-219 --- Biotechnology of Marine Invertebrates-Recent Advances in Shrimp and Shellfish / Anchalee Tassanakajon, Tipachai Vatanavicharn, Premruethai Supungul, Sureerat Tang, Piti Amparyup, Kunlaya Somboonwiwat, Sirinit Tharntada, Jun Takahashi and Haruhiko Toyohara / pp. 221-239 --- Molecular Biotechnology of Development and Growth in Fish Muscle / Ian A. Johnston, Daniel J. Macqueen and Shugo Watabe / pp. 241-262 --- Molecular Innate Immunity in Teleost Fish: Review and Future Perspectives / Takashi Aoki, Tomokazu Takano, Mudjekeewis D. Santos, Hidehiro Kondo and Ikuo Hirono / pp. 263-276 --- Molecular Interaction between Fish Pathogens and Host Aquatic Animals / Laura L. Brown and Stewart C. Johnson / pp. 277-288 --- Keynote 4: Post Harvest Science and Technology --- Progress on Processing and Utilization of Aquatic Products in China / Xichang Wang, Jingjing Zhang and Jiechun Deng / pp. 289-295 --- Molecular Identification of Species and the Geographic Origin of Seafood / Michiaki Yamashita, Atsushi Namikoshi, Jun Iguchi, Yasuharu Takashima, Mohammed Anwar Hossain, Takeshi Yabu and Yumiko Yamashita / pp. 297-306 --- Keynote 5: Ecosystems—Linking Climate Change and Fisheries— --- Effects of Climate Change on Marine Ecosystems / Chen-Tung Arthur Chen / pp. 307-316 --- Keynote 6: Freshwater, Coastal and Marine Environments --- Harmful Algal Blooms and Ocean Observing Systems: Needs, Present Status and Future Potential / Donald M. Anderson / pp. 317-334 --- Coastal Artificial Habitats for Fishery and Environmental Management and Scientific Advancement / William Seaman / pp. 335-349 --- “Sato-Umi”—A New Concept for Sustainable Fisheries / Tetsuo Yanagi / pp. 351-358 --- Keynote 7: Biodiversity and Management --- Optimal Fishing Policies That Maximize Sustainable Ecosystem Services / Hiroyuki Matsuda, Mitsutaku Makino and Koji Kotani / pp. 359-369 --- Ecosystem-Based Sustainable Conservation and Management of Pacific Salmon / Masahide Kaeriyama / pp. 371-380 --- Some Lessons from Implementing Management Procedures / Douglas S. Butterworth / pp. 381-397 --- Keynote 8: Economics and Social Science --- Reconsidering the Contribution of Fisheries to Society and Millennium Development Goals / Kenneth Ruddle / pp. 399-411 --- Advantages and Disadvantages of the Fisheries Trade / Yoshiaki Matsuda / pp. 413-423 --- Keynote 9: Education and International Cooperation --- Japan’s Fisheries Cooperation: Principle, Programs and Achievements / Akihiro Mae / pp. 425-434 --- Institutional Capacity Development for Sustainable Aquaculture and Fisheries: Strategic Partnership with Local Institutions / Renato F. Agbayani and Joebert D. Toledo / pp. 435-448 --- International Cooperation for Higher Education in Aquaculture and Fisheries Science—A European Point of View— / Jean Dhont / pp. 449-460

Description / Table of Contents: Terrestrial fluids, earthquakes and volcanoes: The Hiroshi Wakita volume III is a special publication to honor Professor Hiroshi Wakita for his scientific contribution to science, which has been closely linked with one of the major objectives of this 2008 International Year for the Earth Planet. Reducing natural risks in active tectonic and volcanic environments by searching and detecting early warning hydrological and geochemical signatures related to earthquakes and volcanic eruptions has been a major life research goal for Hiroshi Wakita. This third special issue of Pure and Applied Geophysics consists of 9 original papers written by researchers from Taiwan, Italy, Turkey, Iceland, USA, Sweden, India and Spain dealing with various aspects of the role of terrestrial fluids in earthquake and volcanic processes. It also includes a list of Hiroshi Wakita’s scientific publications. This volume III will be useful to students and professional researchers who are interested in the role of terrestrial fluids in earthquakes and volcanic activity.

Description / Table of Contents: Weather and climate are of concern to virtually all countries worldwide. For many countries the economy depends largely on agriculture, which is significantly affected by variations in weather and climate. This volume contains many original findings on weather and climate related to atmospheric and oceanic processes through mathematical modeling, numerical simulations, and field experiments and it will be useful as a reading material in graduate level courses dealing with weather, climate, boundary layer and air quality. The scientific community at large, especially younger scientists, will find this book a useful addition to their personal and institutional libraries.

Description / Table of Contents: Considerable progress has been made recently in quantifying geometrical and physical properties of fault surfaces and adjacent fractured and granulated damage zones in active faulting environments. There has also been significant progress in developing rheologies and computational frameworks that can model the dynamics of fault zone processes. This volume provides state-of-the-art theoretical and observational results on the mechanics, structure and evolution of fault zones. Subjects discussed include damage rheologies, development of instabilities, fracture and friction, dynamic rupture experiments, and analyses of earthquake and fault zone data.

Description / Table of Contents: This volume of IOP Conference Series: Earth and Environmental Science presents a selection of papers that were given at the 24th Conference of the Danube Countries. Within the framework of the International Hydrological Program IHP of UNESCO. Since 1961 the Danube countries have successfully co-operated in organizing conferences on Hydrological Forecasting and Hydrological Water Management Issues. The 24th Conference of the Danube Countries took place between 2-4 June 2008 in Bled, Slovenia and was organized by the National Committee of Slovenia for the International Hydrological Program of UNESCO, under the auspices of the President of Republic of Slovenia. It was organized jointly by the Slovenian National Commission for UNESCO and the Environmental Agency of the Republic of Slovenia, under the support of UNESCO, WMO, and IAHS...

Description / Table of Contents: 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...

Description / Table of Contents: PREFACE In recent years, there has been increasing interest from geoscientists in potassic igneous rocks. Academic geoscientists have been interested in their petrogenesis and their potential value in defining the tectonic setting of the terranes into which they were intruded, and exploration geoscientists have become increasingly interested in the association of these rocks with major epithermal gold and porphyry gold-copper deposits. Despite this current interest, there is no comprehensive textbook that deals with these aspects of potassic igneous rocks. This book redresses this situation by elucidating the characteristic features of potassic (high-K) igneous rocks, erecting a hierarchical scheme that allows interpretation of their tectonic setting using whole-rock geochemistry, and investigating their associations with a variety of gold and copper-gold deposits, worldwide. About twothirds of the book is based on a PhD thesis by Dr Daniel MOiler which was produced at the Key Centre for Strategic Mineral Deposits within the Department of Geology and Geophysics at The University of Western Australia under the supervision of Professor David Groves, the late Dr Nick Rock, Professor Eugen Stumpfl, Dr Wayne Taylor, and Dr Brendon Griffin. The remainder of the book was compiled from the literature using the collective experience of the two authors. The book is dedicated to the memory of Dr Rock who initiated the research project but died before its completion...

Description / Table of Contents: Introduction / Pages 1-32 --- Interpretation using nomograms / Pages 33-47 --- Linear parameters / Pages 49-114 --- Non-linear parameters / Pages 115-173 --- Maximum likelihood and maximum entropy / Pages 175-193 --- Analytic inversion / Pages 195-211 --- Advanced inversion methods / Pages 213-227 --- Error analysis / Pages 229-243 --- Parallel computation in modelling and inversion / Pages 245-255

Description / Table of Contents: INTRODUCTION While the complex mechanical properties of rocks and soils are studied for quite a while, it is only in the last decades that sound established mathematical models were developed based on accurate experimental data. Some rheological properties of geomaterials as for instance creep, were studied for a long time but the experimental data reported were incomplete and, as a consequence, the models developed have missed either the generality necessary for the solving of engineering problems or some of the major specific mechanical properties possessed by these materials as for instance dilatancy and/or compressibility , long term damage etc. Generally, these very particular empirical models were made for a specific test only and therefore are not appropriate for solving problems involving general loading histories. Let us remind that due to the presence of a great number of cracks and/or pores existing in roks and soils, the mechanical behaviour of geomaterials is quite distinct from that of other materials as for instance metals or plastics. That is why rock and soil rheology has some specific aspects. It must also be mentioned that the solving of various problems of rock and soil mechanics posed by modern technology was not possible by using time-independent models, thus the study and development of rehological models become absolutely necessary. In the last decade or so, very accurate experimantal data became available as a result of the development of experimental techniques and of the growing interest for this field of research in the scientific community. These data, in turn, have made possible the development of genuine models for geomaterials, mainly rheological models, able to describe such properties as creep, dilatancy and/or compressibility during creep, long term damage and failure occurring after various time intervals, slip surface formation etc. Today it is clear that no accurate constitutive equation for rocks can be formulated unless the dilatancy phenomena and the time effects are not included. Another idea is the need of a better description of the concepts of damage and failure of rocks, again using in someway the concepts of irreversible dilatancy or another related notion. In soil rheology it is clear that the scale effect may be taken into consideration in order to obtain a corect information from the routine tests. Also in writing the constitutive equations for soils it is neccessary to take into account the microscopic or local phenomena, because there is a great variety of types of saturated or nonsaturated soils, granular or cohesionless soil etc. The aim of the Euromech Colloquium 196 devoted to Rock and Soil Rheology and therefore that of the present volume too, is to review some of the main results obtained in the last years in this field of research and also to formulate some of the major not yet solved problems which are now under consideration. Exchange of opinions and scientific discussions are quite helpful mainly in those areas where some approaches are controversial and the progress made is quite fast. That is especially true for the rheology of geomaterials, domain of great interest for mining and petroleum engineers, engineering geology, seismology, geophlsics, civil engineering, nuclear and industrial waste storage, geothermal energy storage, caverns for sports, culture, telecommunications, storage of goods and foodstuffs (cold, hot and refrigerated storages), underground oil and natural gas reservoirs etc. Some of the last obtained results are mentioned in the present volume...

Description / Table of Contents: PREFACE This book represents the first attempt in three decades to marshall out available information on the regional geology of Africa for advanced undergraduates and beginning graduate students. Geologic education in African universities is severely hampered by the lack of a textbook on African regional geology. This situation is greatly exacerbated by the inability of most African universities to purchase reference books and maintain journal subscriptions. Besides, geologic information about Africa is so widely dispersed that a balanced and comprehensive course content on Africa is beyond the routine preparation of lecture notes by university teachers. Since geology is a universal subject and Africa is one of the largest landmasses on Earth with one of the longest continuous records of Earth history, there is no doubt that geologic education in other parts of the world will benefit from a comprehensive presentation of African geologic case histories. The scope of this text also addresses the need of the professional geologist, who may require some general or background information about an unfamiliar African geologic region or age interval. Africa occupies a central position in the world's mineral raw materials trade. Because of its enormous extent and great geologic age, the diversity and size of Africa's mineral endowment is unparalleled. Africa is the leading source of gold, diamond, uranium, and dominates the world's supply of strategic minerals such as chromium, manganese, cobalt, and platinum. Consequently, African nations from Algeria to Zimbabwe depend solely on mineral exports for economic survival. The geologic factors which govern economic mineral deposits are stressed in this text. The geological history of Africa spans 3.8 billion years, a record that is unique both in duration and continuity. Few other parts of our planet match the plethora of geologic phenomena and processes that are displayed in the African continent. From the various stages of crustal evolution decipherable from the Archean of southern Africa, through the plate tectonics scenarios in the ubiquitous Late Proterozoic-Early Paleozoic Pan-African mobile belts and in the Hercynian and Alpine orogenies of northwest Africa, to the East African Rift Valley, Africa is replete with excellent examples and problems for a course on regional tectonics. Teachers of igneous and metamorphic petrology can hardly ignore Africa's anorogenic magmatism (e.g.. layered ultramafic intrusives such as the Great Dyke and the Bushveld Complex; the Tete gabbro-anorthosite pluton; alkaline complexes; basaltic volcanism), or tantalizing highgrade metamorphic terranes such as the Limpopo belt, the Namaqua mobile belt, and the Mozambique belt. From the extensive Precambrian supracrustal sequences throughout the continent with enormous thicknesses of sedimentary rocks that have hardly been deformed or metamorphosed, to the stratigraphic evolution of Africa's present-day passive continental margin, there is a complete spectrum of facies models upon which to base a course on basin analysis and stratigraphy. To maintain its integrity a course on historical geology anywhere in the world must address the theory of Continental Drift beyond invoking past continuities between West Africa and South America. Past connections between West Africa and eastern North America must equally be explored, so also connections between northeast Africa and Arabia, and the paleogeography of southern Gondwana where Africa occupied centre stage. The Precambrian fossil record, the transitions from reptiles to the earliest mammals and dinosaurs, and the evolution of Man are among Africa's unique contributions to the history of life and the story of organic evolution. Although it lies today in the tropics Africa was the theatre of the Earth's most-spectacular glaciations. Even after the scene of continental glaciation had shifted to the northern continents only lately during the Pleistocene, Africa still witnessed spectacular climatic fluctuations during the Quaternary. Certainly students of archeology and paleoanthropology cannot overlook the Quaternary paleoenvironmental record of the Olduvai Gorge in Tanzania, the Lake Turkana basin in Kenya, the Nile valley, the Sahara, and southern Africa. But since African examples have already been cited in standard geologic textbook, I have often been asked why it has become necessary to revive the idea of a full-length textbook on African geology, 30 years after this idea was abandoned by the geologic community. My simple answer, as already stated, is that the wealth of available geologic information about Africa is so enormous and fascinating, but so diffuse, that an attempt must be made to assemble and pass on this knowledge.