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Books > Earth & environment > Earth sciences > The hydrosphere > Oceanography (seas)
Between 1949 and 1955, the State Department pushed for an international fisheries policy grounded in maximum sustainable yield (MSY). The concept is based on a confidence that scientists can predict, theoretically, the largest catch that can be taken from a species' stock over an indefinite period. And while it was modified in 1996 with passage of the Sustained Fisheries Act, MSY is still at the heart of modern American fisheries management. As fish populations continue to crash, however, it is clear that MSY is itself not sustainable. Indeed, the concept has been widely criticized by scientists for ignoring several key factors in fisheries management and has led to the devastating collapse of many fisheries. Carmel Finley reveals that the fallibility of MSY lies at its very inception--as a tool of government rather than science. The foundational doctrine of MSY emerged at a time when the US government was using science to promote and transfer Western knowledge and technology, and to ensure that American ships and planes would have free passage through the world's seas and skies. Finley charts the history of US fisheries science using MSY as her focus, and in particular its application to halibut, tuna, and salmon fisheries. Fish populations the world over are threatened, and All the Fish in the Sea helps to sound warnings of the effect of any management policies divested from science itself.
Estuaries is a comprehensive introductory text emphasizing the physical processes involved in the mixing of sea and river water and the transport of fine sediments within the complex estuarine topographic context. The theoretical and mathematical formulation of these processes are treated at a fairly elementary level, and are used to develop a foundation for more extensive study. The second edition retains the classical approaches to the tidally averaged circulation and mixing conditions but broadens them to consider recent advances in the understanding of processes occurring within the tide. The scope has also been widened to include more detail on the morphology of estuaries and their development, the fluxes of suspended fine sediments, and the generation and maintenance of turbidity maximum. The book provides an excellent introduction for research students in oceanography, environmental science, geography, geology, and water and coastal engineering. It will also be useful as a reference book for those working in water quality, morphological modelling and estuarine environmental management.
Optical Remote Sensing is one of the main technologies used in sea surface monitoring. Optical Remote Sensing of Ocean Hydrodynamics investigates and demonstrates capabilities of optical remote sensing technology for enhanced observations and detection of ocean environments. It provides extensive knowledge of physical principles and capabilities of optical observations of the oceans at high spatial resolution, 1-4m, and on the observations of surface wave hydrodynamic processes. It also describes the implementation of spectral-statistical and fusion algorithms for analyses of multispectral optical databases and establishes physics-based criteria for detection of complex wave phenomena and hydrodynamic disturbances including assessment and management of optical databases. This book explains the physical principles of high-resolution optical imagery of the ocean surface, discusses for the first time the capabilities of observing hydrodynamic processes and events, and emphasizes the integration of optical measurements and enhanced data analysis. It also covers both the assessment and the interpretation of dynamic multispectral optical databases and includes applications for advanced studies and nonacoustic detection. This book is an invaluable resource for researches, industry professionals, engineers, and students working on cross-disciplinary problems in ocean hydrodynamics, optical remote sensing of the ocean and sea surface remote sensing. Readers in the fields of geosciences and remote sensing, applied physics, oceanography, satellite observation technology, and optical engineering will learn the theory and practice of optical interactions with the ocean.
This work provides a wide perspective of the oceans by examining their places in the earth sciences, drawing together all the key strands of ocean study and presenting a holistic view of ocean processes, ancient and modern.
This book critically reexamines what turbulence really is, from a fundamental point of view and based on observations from nature, laboratories, and direct numerical simulations. It includes critical assessments and a comparative analysis of the key developments, their evolution and failures, along with key misconceptions and outdated paradigms. The main emphasis is on conceptual and problematic aspects, physical phenomena, observations, misconceptions and unresolved issues rather than on conventional formalistic aspects, models, etc. Apart from the obvious fundamental importance of turbulent flows, this emphasis stems from the basic premise that without corresponding progress in fundamental aspects there is little chance for progress in applications such as drag reduction, mixing, control and modeling of turbulence. More generally, there is also a desperate need to grasp the physical fundamentals of the technological processes in which turbulence plays a central role.
This edited volume addresses the impacts of climate change on Pacific islands, and presents databases and indexes for assessing and adapting to island vulnerabilities. By analyzing susceptibility variables, developing comprehensive vulnerability indexes, and applying GIS techniques, the book's authors demonstrate the particular issues presented by climate change in the islands of the Pacific region, and how these issues may be managed to preserve and improve biodiversity and human livelihoods. The book first introduces the issues specific to island communities, such as high emissions impacts, and discusses the importance of the lithological traits of Pacific islands and how these physical factors relate to climate change impacts. From here, the book aims to analyze the various vulnerabilities of different island sectors, and to formulate a susceptibility index from these variables to be used by government and planning agencies for relief prioritization. Such variables include tropical cyclones, built infrastructures, proximity to coastal areas, agriculture, fisheries and marine resources, groundwater availability, biodiversity, and economic impacts on industries such as tourism. Through the categorization and indexing of these variables, human and physical adaptation measures are proposed, and support solutions are offered to aid the inhabitants of affected island countries. This book is intended for policy makers, academics, and climate change researchers, particularly those dealing with climate change impacts on small islands.
Marine and coastal applications of GIS are finally gaining wide
acceptance in scientific as well as GIS communities, and cover the
fields of deep sea geology, chemistry and biology, and coastal
geology, biology, engineering and resource management. Comprising
rigorous contributions from a group of leading scholars in marine
and coastal GIS, this book will inspire and stimulate continued
research in this important new application domain.
Dispersion in Estuaries and Coastal Waters describes the physical processes which result in the dilution of a substance in the marine environment. The emphasis is mainly on the fundamental mechanisms of dispersion and the occurrence of these processes in estuaries and coastal waters Aspects of the present understanding of fluid dynamics in homogenous and stratified flows are discussed, with particular reference to the relevance of flow conditions to the turbulent state. The book describes how the associated dispersion processes are represented in mathematical models to quantify dilution in marine systems and the experimental techniques used to derive the mixing parameters required for the models. Concluding by discussing the application of the concepts of dispersion in well mixed, stratified and partially mixed systems, Dispersion in Estuaries and Coastal Waters acts as an excellent guide book for those needing to solve practical problems relating to marine dispersion. It also provides a useful review of dispersion as it cites key publications, both recent and long-standing, which are invaluable in interpreting and quantifying the dilution and fate of material in the marine environment.
Seawater desalination is a rapidly growing coastal industry that is increasingly threatened by algal blooms. Depending on the severity of algal blooms, desalination systems may be forced to shut down because of clogging and/or poor feed water quality. To maintain stable operation and provide good feed water quality to seawater reverse osmosis (SWRO) systems, ultrafiltration (UF) pre-treatment is proposed. This research focused on assessing the ability of UF and other pre-treatment technologies to reduce biofouling in SWRO systems. An improved method to measure bacterial regrowth potential (BRP) was developed and applied at laboratory, pilot and full scale to assess the ability of conventional UF (150 kDa) and tight UF (10 kDa) alone and in combination with a phosphate adsorbent to reduce regrowth potential and delay the onset of biofouling in SWRO. The improved bacterial regrowth potential method employs a natural consortium of marine bacteria as inoculum and flow cytometry. The limit of detection of the BRP method was lowered to 43,000 +/- 12,000 cells/mL, which is equivalent to 9.3 +/- 2.6 g-Cglucose/L. The reduction in bacterial regrowth potential after tight UF (10 kDa) was 3 to 4 times higher than with conventional UF (150 kDa). It was further reduced after the application of a phosphate adsorbent, independent of pore size of the UF membrane. Pilot studies demonstrated that the application of tight UF (10 kDa) coupled with a phosphate adsorbent consistently lowered the bacterial regrowth potential and no feed channel pressure drop increase was observed in membrane fouling simulators (MFS) over a period of 21 days. The study also showed that non-backwashable fouling of UF membranes varied strongly with the type of algal species and the algal organic matter (AOM) they release. The presence of polysaccharide (stretching -OH) and sugar ester groups (stretching S=O) was the main cause of non-backwashable fouling. In conclusion, this study showed that an improved BRP method is suitable for the assessment of SWRO pre-treatment systems and it can be a useful tool to develop potential strategies to mitigate biofouling and improve the sustainability of SWRO systems.
The seas and oceans are currently taking centre stage in academic study and public consciousness. From the plastics littering our seas, to the role of climate change on ocean currents from unequal access of marine resources to the treacherous experiences of seafarers who keep our global economy afloat; now is a crucial time to examine how we live with the sea. This ambitious book brings together an interdisciplinary and international cohort of contributors from within and beyond academia. It offers a range and diversity of insights unlike previous collections. An 'oceanic turn' is taking place, with a burgeoning of academic work that takes seriously the place of seas and oceans in understanding socio-cultural and political life, past and present. Yet, there is a significant gap concerning the ways in which we engage with seas and oceans, with a will to enliven action and evoke change. This book explores these challenges, offering insights from spatial planning, architectural design, geography, educational studies, anthropology and cultural studies. An examination through these lenses can help us to better understand human relationships with the seas and oceans, and promote an ethic of care for the future.
Rip currents are among the most dangerous coastal hazards for the bathing public, and contribute to the highest portion of beach rescues all over the world. In order to help life guards in planning and preparing rescue resources so that casualties can be minimized, information about where and when rip currents may occur is needed. This can be provided by a predictive tool which combines meteorological forecasts, hydrodynamic models and remote-sensed observations. In this thesis, a methodology which can provide rip current forecasts for swimmer safety is developed and tested for Egmond aan Zee beach in the Netherlands. The approach uses the numerical model system CoSMoS, combined with daily estimates of nearshore-scale bathymetry obtained from a system called cBathy, which infers depths by estimating wave celerities from video imaging. Furthermore, in order to gain more knowledge on occurrences of rips at Egmond beach, a numerical study on the kinematics of rip currents and the safety implications for swimmers is presented as well. Coupling the video bathymetry estimates with CoSMoS in forecast mode shows that dangerous rips were correctly predicted. This thesis demonstrates the potential application of the proposed system for providing rip current forecasts at Egmond aan Zee.
The Indian Ocean tsunami of December 2004 is considered to have been one of the worst natural disasters in history, affecting twelve countries, from Indonesia to Somalia. 175,000 people are believed to have lost their lives, almost 50,000 were registered as missing and 1.7 million people were displaced. As well as this horrendous toll on human life, the tsunami destroyed property worth billions of dollars and ruined many local economies. Based on their experience and analysis of this tsunami, the authors have developed methodologies for predicting and preparing for tsunamis. A basis is provided for a cost-effective warning and preparedness strategy, drawing on the example of existing systems used in earthquake disaster management and tidal wave warning, from genesis to impact. The book comprehensively addresses the fundamentals of tsunami science, identifying potential areas where tsunamis might be generated, predicting the anticipated course of tsunamis and considering how the geophysical, ecological and socioeconomic location of a community may determine the severity of tsunami damage. The authors suggest how precursors can be used to enhance the advance warning time, how tsunamis can be detected at the time of their occurrence, and the manner in which warnings should be communicated to the populations likely to be affected. Finally, improvement in eco-sociological resilience through the application of dual-use technologies is identified as a pivotal aid in allowing coastal communities to be better prepared. The book will be of interest to a global audience of professionals and academics active in seismology, ocean science, meteorology, coastal management, earthquake engineering and disaster management.
This volume provides various examples and dimensions, chemical, biological, climatic, or related to extreme (hazards). It describes, by reciprocity, the vulnerability of ecosystems, resources, heritage, human health and, consequently, economic and social sectors. it considers climate scenarios and socio-economic status indicators research, design strategies and patterns of adaptation, development of innovative monitoring systems, analysis of perceptions of major hazards and valuation of ecosystem services.
This translation of the original German textbook, Hydrogeologie, summarizes tracing techniques. Individual chapters have been contributed by relevant experts from geology, hydrology, chemistry and virology, and engineering and isotope specialists. Text contributions are complemented by numerous figures. A cd rom will assist in the evaluation and presentation of data from tracing tests.
This volume presents the proceedings of Symposium on Marine Geology and Palaeoceanography of the 30th International Geological Congress at Beijing. The proceedings aim to present a view of contemporary marine geology and should be of interest to researchers in the geological science.
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.
This volume contains the proceedings from the COSPAR Colloquium on
"Space Remote Sensing of Subtropical Oceans" which took place
between 12 and 16 September, 1996, at the Institute of Oceanography
of the National Taiwan University. Included are contributions addressing the issue, from scientific points of views, of why the first scientific satellite of Taiwan, ROCSAT-1, should be equipped with the Ocean Colour Imager (OCI) for oceanographic investigations.
The second edition of Environmental Oceanography is the first textbook to link the needs of the coastal oceanographer and the environmental practitioner. The ever-increasing human impact on the environment, and particularly on the coastal zone, has led governments to carefully examine the environmental implications of development proposals. This book provides the background needed to undertake coastal oceanographic investigations and sets them in context by incorporating case studies and sample problems based on the author's experience as an environmental consultant.
Sea Ice Image Processing with MATLAB addresses the topic of image processing for the extraction of key sea ice characteristics from digital photography, which is of great relevance for Artic remote sensing and marine operations. This valuable guide provides tools for quantifying the ice environment that needs to be identified and reproduced for such testing. This includes fit-for-purpose studies of existing vessels, new-build conceptual design and detailed engineering design studies for new developments, and studies of demanding marine operations involving multiple vessels and operational scenarios in sea ice. A major contribution of this work is the development of automated computer algorithms for efficient image analysis. These are used to process individual sea-ice images and video streams of images to extract parameters such as ice floe size distribution, and ice types. Readers are supplied with Matlab source codes of the algorithms for the image processing methods discussed in the book made available as online material. Features Presents the first systematic work using image processing techniques to identify ice floe size distribution from aerial images Helps identify individual ice floe and obtain floe size distributions for Arctic offshore operations and transportation Explains specific algorithms that can be combined to solve various problems during polar sea ice investigations Includes MATLAB (R) codes useful not only for academics, but for ice engineers and scientists to develop tools applicable in different areas such as sustainable arctic marine and coastal technology research Provides image processing techniques applicable to other fields like biomedicine, material science, etc
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