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Books > Earth & environment > Earth sciences > The hydrosphere > Oceanography (seas)
This book provides an overview of the major changes induced by hydrocarbons (HCs) affecting rocks and surface sediments and their implications for non-seismic exploration methods, particularly for marine territories near Cuba. It examines the use of a digital elevation model (DEM) at 90x90m resolution for the detection of subtle, positive geomorphic anomalies related to hydrocarbon microseepage (vertical migration) on possible oil and gas targets. The results support the conclusion that the DEM data provides a low cost and fast offshore oil and gas preliminary exploration strategy. This data is useful serving to focus prospective areas with supplementary unconventional methods such as magnetic-induced polarization (MIP), useful to propose more expensive volumes for detailed 2D-3D seismic surveys.
Offshore drilling and constructions require exact knowledge of the geophysical properties of the seabed and sub-seabed, as unexpected objects can slow down or halt projects. This book presents the state-of-the-art in acoustic exploration of the seabed and sub-seabed, from initial designs in the 1980s to commercial contracting and operation of the Acoustic Corer (TM) in the last decade. The Acoustic Corer (TM) is a high-definition commercial acoustic sub-bottom imaging system, producing an "acoustic core" within which sub-seabed sedimentary characteristics and discrete buried objects larger than 0.5 m can be identified and mapped. It makes use of the innovative JYG-cross design, inspired by seismic reflection and uses Synthetic Aperture Sonar (SAS) multi-angle scattering in and within the seabed to deliver unprecedented imagery. This book was written by the inventor of these concepts, a known specialist in seabed acoustics, with help from an experienced academic and author. It is intended first and foremost as a "how-to" guide for offshore industries looking at techniques to make the installation of different types of structures safe and efficient.
In the last 50 years marine conservation has grown from almost nothing to become a major topic of global activity involving many people and organisations. Marine conservation activities have been applied to a huge diversity of species, habitats, ecosystems and whole seas. Many marine conservation actions have focused on human impacts on the marine environment from development and pollution to the impacts of fisheries. Whilst science has provided the backbone of thinking on marine conservation, perhaps the biggest change over this period has been the use of an ever-increasing range of techniques and disciplines to further marine conservation ends. Bob Earll explores what marine conservation involves in practice by providing a synthesis of the main developments from the viewpoints of 19 leading practitioners and pioneers who have helped shape its progress and successes. Their narratives highlight the diversity and richness of activity, and the realities of delivering marine conservation in practice with reference to a host of projects and case studies. Many of these narratives demonstrate how innovative conservationists have been - often developing novel approaches to problems where little information and no frameworks exist. The case studies described are based on a wide range of European and international projects. This book takes an in-depth look at the reality of delivering marine conservation in practice, where achieving change is often a complicated process, with barriers to overcome that have nothing to do with science. Marine conservationists will often be working with stakeholders for whom marine conservation is not a priority. This book aims to help readers describe and understand those realities, and shows that successful and inspirational projects can be delivered against the odds.
Crabs can be found in abundance along the shorelines from Oregon to BC, burrowed under sand, soil and rocks. Keep this portable field guide handy on trips to the seashore to identify over forty species of crabs and hermit crabs in all shapes and sizes. Discover the differences between the Butterfly Crab and the Puget Sound King Crab and learn how to distinguish between male and female crabs. With full-colour photographs featuring both dorsal and ventral views, and accompanied by descriptive text for easy identification, A Field Guide to Crabs of the Pacific Northwest is an ideal companion for curious beachgoers of all ages.
The work is aimed at the review of hot topics in modern light scattering and radiative transfer. A special attention will be given to the description of the methods of integro-differential radiative transfer equation solution. In particular, the asymptotic radiative transfer and the method of discrete ordinates will be considered. A comprehensive review of light absorption in the terrestrial atmosphere will be given as well. The inverse problem solution will be reviewed as well.
The book is a thoughtful discussion with scientists studying convergent plate boundaries such as the well-known, active India-Eurasia collision zone. It provides a comprehensive collection of petrographic images of ophiolitic rocks exhumed from oceanic lithosphere and mantle at the India-Asia plate boundary. Ophiolite is exposed in the northwestern Himalayas, eastern Indian plate margin and Andaman-Nicobar Islands. At the eastern margin, it occurs in a narrow strip comprising mantle peridotite tectonite, cummulate peridotite-gabbro-plagiogranite-anorthosite, mafic dyke, volcanics and oceanic sediments. Low temperature/high pressure rocks including blueschists and eclogites were extensively studied recently. Ophiolite derived sediments and podiform chromites will also be discussed to provide complete details. Supplemental maps, geological sections, field sketches and photographs will explain the structure, stratigraphy, ore mineralization, and metamorphic history.
The proposed book features a systematic and thorough treatment of the dominant persistent organic pollutants (POP's) encountered in the tropical marine environment of the Indian Sundarban mangrove wetlands, a UNESCO World Heritage Site. Chapters provide a comprehensive and realistic account of the world's most hazardous organic compounds. Readers will discover a detailed account of the characteristics, potential point and non-point sources, analytical techniques and the ecotoxicological relevance of selected POPs, namely organochlorine pesticides, polychlorinated phenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs). These pollutants are of considerable interest because their exposure could cause immunologic, teratogenic and neurological problems in humans and other living beings. The book is intended to serve as a reliable and up-to-date reference source for students, teachers and researchers engaged in the field of chemical oceanography, ecotoxicology and pollution management.
This book is the outcome of rigorous and continuous research work done by the author over about three decades on the open ecosystem and dynamic environment of the estuarine Sunderbans. The objective of this work is to identify the field and factors changing gradually upon this active delta over the years, decades and centuries. The deltaic Sunderbans yet not mature enough, has been changing in its natural course with time. Further, anthropogenic interferences disturb the environments and accelerate degradation of nature of this fragile ecosystem simultaneously. Roles played by almost all the agents including man and environment and their involvement are identified for the changing environmental scenario of the Sunderbans. The book is befitted for the researchers and students for the post graduate levels. The Sunderbans, a UNESCO World Heritage Site covering parts of Bangladesh and the southern tip of Indian state of West Bengal, is a part of world's largest deltaic plain of fluvio-marine deposit formed by the Ganges and Brahmaputra at the confluence of the Bay of Bengal. It is the largest single block of tidal halophytic mangrove forest in the world, conspicuous for its great size and biodiversity. With an enormous network of channels and creeks, tidal inundation twice daily, Sunderbans mangroves wetland is a dynamic and complex ecosystem, which undergoes continuous processes of erosion and accretion. Natural processes like changes in local hydrology, sediment motion under wind, wave and tidal action, beach dynamics, regional and global processes like sea level rise as well as the impact of human interference in the form of reclamation of forest land, changes in land use patterns, coastal urbanizations etc are the lead factors for the changes in the environmental scenario of Sunderbans.
This book contains a comprehensive study of the internal ocean waves, which play a very important role in ocean physics providing mechanisms for ocean water mixing and circulation, as well as the transportation of gases, nutrients, and a very large number of marine organisms in the ocean body. In contrast to surface waves, the literature on internal waves is not so numerous, mainly due to the difficulties in experimental data collection and in the mathematical description of internal wave propagation. In this book, the basic mathematical principles, a physical description of the observed phenomena, and practical theoretical methods of determination of wave parameters as well as the original method of observation using moving sensors are presented. Special attention is paid to internal wave propagation over changing bottom topographies in shallow seas such as the Baltic Sea. The book is supplemented with an extended list of relevant and extended bibliographies, a subject index, and an author index.
The author participated in 38 sea going expeditions including the first manned-submersible project to explore the Mid-Atlantic Ridge. This book provides a comprehensive overview of the past 45 years of sea floor exploration. It summarizes the mineralogical and petrological composition of sea floor rocks, ocean floor volcanism in relation to the geological setting and the discovery of hydrothermal activity. In addition to learning about various scientific missions and their objectives, the reader is introduced to rift zones where the sea floor is being created, as well as to fracture zones, intraplate volcanoes, and the structural setting of subduction zones
The book is structured into six core parts. The first part sets the scene and explains how the use of Aral basin water resources, primarily used for irrigation, have destroyed the Aral Sea. The team explains how spheres and events interact and the related problems. Part 2 examines the social consequences of the ecological catastrophe and the affect of the Aral Sea desiccation on cultural and economic conditions of near Aral region. Part 3 explores the scientific causes of the destruction using detailed analyses and data plus some of their own research spanning aquatic biology, terrestrial biology, hydrology, water management and biodiversity. They also share some of the latest archaeological discoveries and paleobotanical analysis to delineate past levels and characteristics of the Aral Sea. There is particular focus on modern remote sensing and GIS techniques and how they can monitor the Aral Sea and the environment. Part 4 discusses regional and international initiatives to mitigate human and ecological problems of the Aral Sea and the wider political and economic consequences. With thorough insight of the total environment cost, the final chapters of the book will provide lessons for the future. There are insightful case studies throughout. Multidisciplinary by nature, all titles in our new reference book series will explore significant changes within the Earth's ecosystems and to some extent, and will tackle ways to think about our changing environment.
Atoll Island States exist on top of what is perceived to be one of the planet's most vulnerable ecosystems: atolls. It has been predicted that an increase in the pace of sea level rise brought about by increasing greenhouse gas concentrations in the atmosphere will cause them to disappear, forcing their inhabitants to migrate. The present book represents a multidisciplinary legal and engineering perspective on this problem, challenging some common misconceptions regarding atolls and their vulnerability to sea-level rise. Coral islands have survived past changes in sea levels, and it is the survival of coral reefs what will be crucial for their continued existence. These islands are important for their inhabitants as they represent not only their ancestral agricultural lands and heritage, but also a source of revenue through the exploitation of the maritime areas associated with them. However, even if faced with extreme climate change, it could theoretically be possible for the richer Atoll Island States to engineer ways to prevent their main islands from disappearing, though sadly not all will have the required financial resources to do so. As islands become progressively uninhabitable their residents will be forced to settle in foreign lands, and could become stateless if the Atoll Island State ceases to be recognized as a sovereign country. However, rather than tackling this problem by entering into lengthy negotiations over new treaties, more practical solutions, encompassing bilateral negotiations or the possibility of acquiring small new territories, should be explored. This would make it possible for Atoll Island States in the future to keep some sort of international sovereign personality, which could benefit the descendents of its present day inhabitants.
Multi-scale systems, involving complex interacting processes that occur over a range of temporal and spatial scales, are present in a broad range of disciplines. Several methodologies exist to retrieve this multi-scale information from a given time series; however, each method has its own limitations. This book presents the mathematical theory behind the stochastic analysis of scaling time series, including a general historical introduction to the problem of intermittency in turbulence, as well as how to implement this analysis for a range of different applications. Covering a variety of statistical methods, such as Fourier analysis and wavelet transforms, it provides readers with a thorough understanding of the techniques and when to apply them. New techniques to analyse stochastic processes, including empirical mode decomposition, are also explored. Case studies, in turbulence and ocean sciences, are used to demonstrate how these statistical methods can be applied in practice, for students and researchers.
Originally published in 1922, this book was written to provide 'the modern seaman' with a practical guide to the causes of tidal phenomena. The text explains the correct methods of using tidal information, introduces improved methods of giving such information by means of harmonic constants and explains how, from these constants, the height of the tide may be calculated accurately. Appendices and illustrative figures are included. This book will be of value to anyone with an interest in tides and the history of science.
Originally published in 1934, this book identifies and analyses the different types of waves most prevalent amongst the world's oceans and rivers and is an account of the author's original contributions to the knowledge of wave phenomena. Chapter one comprehensively explores the size and speed of ocean waves in relation to the velocity of wind, chapter two analyses waves in sand and snow formed and propelled by wind and current, whist chapter three investigates tidal bores and other progressive waves in rivers. The book also contains a variety of insightful and fascinating photographs presenting the different varieties of wave formation, such as tidal sand waves, leaping waves and the roll waves of a stream. This book will serve as an important reference work for researchers in the field and will be of considerable value to anyone interested in geophysics, climatology and oceanography.
This textbook develops a fundamental understanding of geophysical fluid dynamics by providing a mathematical description of fluid properties, kinematics and dynamics as influenced by earth's rotation. Its didactic value is based on elaborate treatment of basic principles, derived equations, exemplary solutions and their interpretation. Both starting graduate students and experienced scientists can closely follow the mathematical development of the basic theory applied to the flow of uniform density fluids on a rotating earth, with (1) basic physics introducing the "novel" effects of rotation for flows on planetary scales, (2) simplified dynamics of shallow water and quasi-geostrophic theories applied to a variety of steady, unsteady flows and geophysical wave motions, demonstrating the restoring effects of Coriolis acceleration, earth's curvature (beta) and topographic steering, (3) conservation of vorticity and energy at geophysical scales, and (4) specific applications to help demonstrate the ability to create and solve new problems in this very rich field. A comprehensive review of the complex geophysical flows of the ocean and the atmosphere is closely knitted with this basic description, intended to be developed further in the second volume that addresses density stratified geophysical fluid dynamics.
Edited in collaboration with TEN ECOPORT project, this volume contains the proceedings of the 1st International Conference on ‘Sustainable Development of the Sea-corridors and Coastal Waters’. The book highlights the advances of environmental pollution management on ports and coastal zones. Particular attention is given to water quality, issues that concern the marine environment of sea corridors and coastal waters, especially in regions surrounding ports. In addition to these topics the chapters explore novel methodologies and technologies, IT solutions, data and instrumentation of monitoring water quality. The book is organized into five parts: assessment, monitoring, sustainable management system, port processes and historical ports. TEN ECOPORT (Transnational ENhancement of ECOPORT8 network) is a project co-financed by the South East Europe Transnational Cooperation Programme.
Requirements.- Motivation.- Basics of Geophysical Fluid Dynamics.- Long Waves in a Channel.- 2D Shallow-Water Modelling.- Rotational Effects.
Originally published in 1928 as part of the Cambridge Comparative Physiology Series, this book examines the effect of sea water on the growth of marine plants and animals as well as how the varying chemical makeup of seawater affects its circulation. Harvey covers topics such as temperature fluctuation, tidal streams, and the fertility of coastal areas, and supplies many charts and graphs in the text to illustrate key points. This book will be of value to anyone with an interest in the history of science and the study of the oceans.
Recent global events such as the devastating 1998 Papua New Guinea tsunami, the 2004 Sumatran tsunami and the 2006 SE Asia undersea network cable failure underscore the societal and economic effects of submarine mass movements. These events call upon the scientific community to understand submarine mass movement processes and consequences to assist in hazard assessment, mitigation and planning. Additionally, submarine mass movements are beginning to be recognized as prevalent in continental margin geologic sections. As such, they represent a significant if not dominant role in margin sedimentary processes. They also represent a potential hazard to hydrocarbon exploration and development, but also represent exploration indicators and targets. This volume consists of a collection of the latest scientific research by international experts in geological, geophysical, engineering and environment aspects of submarine mass failures, focussed on understanding the full spectrum of challenges presented by submarine mass movements and their consequences.
Dive deep to explore the ocean From how most of our oxygen is created by phytoplankton, to how currents control our climate, to the marine food chain and the importance of coral, this is the holy grail of ocean books that's easy for everyone to digest. It features fun facts about some of the most incredible, bizarre, and fascinating creatures in the ocean, from mantis shrimp that can strike things with the speed of a .22 caliber bullet to fish with clear heads that can see out of the top of their skulls. The ocean is full of wonders and there is still so much left to explore and understand. How our oceans work What creatures live in the ocean Find out how the ocean regulates our climate and weather patterns How growing pollution threatens our ocean and its inhabitants Oceans For Dummies is perfect for anyone with an interest in the ocean, including kids, adults, students, ocean lovers, surfers, fishermen, conservationists, sailors, and everyone in between.
This book presents a concise description of the acoustics of ocean sediment acoustics, including the latest developments that address the discrepancies between theoretical models and experimental measurements. This work should be of interest to ocean acoustic engineers and physicists, as well as graduate students and course instructors. The seabed is neither a liquid nor a solid, but a fluid saturated porous material that obeys the wave equations of a poroelastic medium, which are significantly more complicated than the equations of either a liquid or a solid. This volume presents a model of seabed acoustics with input parameters that allow the model to cover a wide range of sediment types. The author includes example reflection and transmission curves which may be used as typical for a range of sediment types. The contents of this book will allow the reader to understand the physical processes involved in the reflection, propagation, and attenuation of sound and shear waves in ocean sediments and to model the acoustic properties for a wide range of applications.
Cotidal lines are lines on a map which connect points at which the same tidal level occurs simultaneously. Isaac Newton had explained the movement of the tides by the action of the moon and sun, and Daniel Bernoulli had used Newton's findings to create tide tables for specific locations, but William Whewell wanted to take research further by gathering and analysing information which would link cotidal points or lines across the world. Fellow and eventually Master of Trinity College, Cambridge, Whewell (1794 1866) published this work in 1833. In it he proposes various observations that would need to be undertaken to produce a cotidal map, with detailed descriptions of the factors to be taken into account in computing the results. In 1837, Whewell, several of whose other works are also reissued in this series, was awarded a royal prize medal by the Royal Society for his work on 'tidology'."
This book contributes to the current discussion on global environmental changes by discussing modifications in marine ecosystems related to global climate changes. In marine ecosystems, rising atmospheric CO2 and climate changes are associated with shifts in temperature, circulation, stratification, nutrient input, oxygen concentration and ocean acidification, which have significant biological effects on a regional and global scale. Knowing how these changes affect the distribution and abundance of plankton in the ocean currents is crucial to our understanding of how climate change impacts the marine environment. Ocean temperatures, weather and climatic changes greatly influence the amount and location of nutrients in the water column. If temperatures and currents change, the plankton production cycle may not coincide with the reproduction cycle of fish. The above changes are closely related to the changes in radiative forcing, which initiate feedback mechanisms like changes in surface temperature, circulation, and atmospheric chemistry. |
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