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Books > Earth & environment > Earth sciences > The hydrosphere > Oceanography (seas)
Theareanorthwardof50 N. Source:AMAP(2003). EstablishmentinMay,1937,ofthe?rstdrifting'NorthPole-1'(NP-1)stationin the Arctic Ocean and organization of the ?rst 'Sever' airborne high-latidudinal expedition(AHE)continuedtheSecondIPYinthestudyoftheArctic.Theexpe- ence of these expeditions convincingly proved the possibility of organizing and conducting(directlyfromtheice)long-termcomplexmeteorological,oceanographic andiceobservations. WorldWarIIinterruptedforalongtimethelarge-scalestudiesintheArctic. The'Sever'AHEswereresumedin1948,andorganizationofdriftingstationsin 1950. Todate,whilsttheRussianresearch'NP-33'stationdriftsinthevicinityofthe NorthPole,itcanbestatedthatourknowledgeoftheArcticOceanforthelast70 yearshasachievedaleveldi?eringlittlefromthelevelofknowledgeoftheother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
Although numerous books have been written on both monitoring and modelling of coastal oceans, there is a practical need for an introductory multi-disciplinary volume to non-specialists in this field. The articles commisioned for this book, organized into four major themes, are written by experts in their disciplines while the text is intended for scientists who do not have extensive training in marine sciences and coastal zone management. As such, the articles in this monograph can be a valuable reference for practicing professionals. The first section introduces the complex physical processes with main emphasis on waste disposal in the coastal ocean. Following this, examples of instrumentation techniques that are commonly used for measuring different properties of oceans are discribed. Coastal and estuarine transport and dispersion modelling is introduced in the next section with examples from different parts of the world. The last section provides an overview of coastal disasters such as tropical cyclones, storm surges and oil spills.
Mass Transport, Gravity Flows, and Bottom Currents: Downslope and Alongslope Processes and Deposits focuses solely on important downslope and alongslope processes. The book provides clear definitions and characteristics based on soil mechanics, fluid mechanics and sediment concentration by volume. It addresses Slides, Slumps, and Debris Flows, Grain Flows, Liquefied/Fluidized Flows, and Turbidity Currents, Density plumes, Hyperpycnal Flows, the Triggering Mechanisms of Downslope Processes, Bottom Currents, and Soft-Sediment Deformation Structures. The mechanics of each process are described in detail and used to provide empirically-driven categories to help recognize these deposits it the rock record. Case studies clearly illustrate of the problems inherent in recognizing these processes in the rock record, and potential solutions are provided alongside future avenues of research. An appendix also provides step-by-step guidance in describing and interpreting sediments.
Over the past 20 years the study of the frozen Arctic and Southern Oceans and sub-arctic seas has progressed at a remarkable pace. This third edition of Sea Ice gives insight into the very latest understanding of the how sea ice is formed, how we measure (and model) its extent, the biology that lives within and associated with sea ice and the effect of climate change on its distribution. How sea ice influences the oceanography of underlying waters and the influences that sea ice has on humans living in Arctic regions are also discussed. Featuring twelve new chapters, this edition follows two previous editions (2001 and 2010), and the need for this latest update exhibits just how rapidly the science of sea ice is developing. The 27 chapters are written by a team of more than 50 of the worlds leading experts in their fields. These combine to make the book the most comprehensive introduction to the physics, chemistry, biology and geology of sea ice that there is. This third edition of Sea Ice will be a key resource for all policy makers, researchers and students who work with the frozen oceans and seas.
Climate Change and Ocean Governance brings together authors from political science and cognate disciplines to examine the political and policy dimensions of climate change for our oceans. The environmental, social and economic consequences of oceanic change present tremendous challenges for governments and other actors. New and innovative policies for governing oceans and seas - and for managing vital marine resources - have never been more important. Existing national and international institutions for marine governance that were created when oceanic conditions were relatively static may not be adequate for a future characterized by continuous oceanic change. Responses to oceanic change will result in winners and losers, and thus will involve politics in all its manifestations. This book reveals the unavoidable connections between climate change, the oceans, and questions of governance. It provides valuable lessons for researchers, policymakers and activists concerned about governing oceanic change into the future.
A comprehensive introduction to the most commonly used statistical methods relevant in atmospheric, oceanic and climate sciences. Each method is described step-by-step using plain language, and illustrated with concrete examples, with relevant statistical and scientific concepts explained as needed. Particular attention is paid to nuances and pitfalls, with sufficient detail to enable the reader to write relevant code. Topics covered include hypothesis testing, time series analysis, linear regression, data assimilation, extreme value analysis, Principal Component Analysis, Canonical Correlation Analysis, Predictable Component Analysis, and Covariance Discriminant Analysis. The specific statistical challenges that arise in climate applications are also discussed, including model selection problems associated with Canonical Correlation Analysis, Predictable Component Analysis, and Covariance Discriminant Analysis. Requiring no previous background in statistics, this is a highly accessible textbook and reference for students and early-career researchers in the climate sciences.
The proceedings of the joint BMB 15 and ECSA 27 Symposium provides the reader with some of the advances in the study of biology, ecology, and physical and biochemical modelling of enclosed or semi-enclosed marine, brackish and estuarine systems (the Baltic Sea, the North Sea, the White Sea, the Black Sea, and the Ionian Sea). The book covers a wide range of topics in this field, including hydrography and modelling, eutrophication, environmental gradients, pelagic and benthic communities, introduced species and case studies of environmental impact. This volume of 28 papers summarizes current knowledge on the broad-scale topics of enclosed and semi-enclosed marine systems, and should be of interest to scientists, students and administrators within the field of marine ecology, environmental impact control and conservation.
One of the greatest scientific and technological achievements of the 21st century will be to cast a light on the eternal darkness of the deep ocean and this book identifies the key determinants of life or death in its extreme environment. Dr. Erik Seedhouse examines how individuals survive free dives to 200m, how humans adapt to breathing exotic gas mixes at depths exceeding 700m, and how technological innovation will enable humans to enter unendurable realms. The book describes the problems unique to the hostile environment of the deep ocean, such as decompression sickness, discusses how the human body responds to increased pressure, and what happens when adaptive mechanisms fail. Ocean Outpost describes how the technology will evolve, how crews will be selected and trained and what a typical underwater mission will entail. The book also chronicles the frontiers of diving medicine that will eventually take humans into the midst of a world we could once only guess at.
The promontory of Gargano in the southern Adriatic Sea represents one of the most interesting Italian coastal zones subjected to tsunami hazard. Figure la gives the geographical map of Italy; with a box embracing the region of Gargano; details of that region are in turn sketched in Figure lb. Because of the incompleteness of the earthquake and tsunami catalogues, no reports on tsunamis in this area are available prior to 1600 AD. The Gargano events have been recently revised in order to establish their reliability and to attain the phenomenological reconstruction of the tsunamis (Guidoboni and Tinti, 1987 and 1988; Tinti et. al. , 1995). This work fits the general purpose of assessing tsunami hazard along the Italian coasts and represents a continuation of a previous study, where the first quantitative description of the 1627 tsunami from a numerical modeling viewpoint was performed (Tinti and Piatanesi, 1996). The earthquake took place on 30 July 1627 about mid-day and was followed by four large aftershocks. It claimed more than 5,000 victims and destroyed completely numerous villages in the northern Gargano area, with the most severe damage located between S. Severo and Lesina. The earthquake excited a tsunami with the most impressive effects in proximity of the Lesina Lake where the most reliable contemporary chronicles report about an initial sea water withdrawal of about 2 miles and a subsequent penetration inland.
The study of sea waves has always been in the focus of mankind's atten tion. This is attributed not only to a desire to understand the behaviour in seas and oceans, but also, it has some practical necessity. Developing up-to date wind wave numerical methods requires detailed mathematical modelling, starting with wave generation, development, propagation and transformation on the surface in different water areas under quasi-stationary conditions, up to a synthesis of climatic features observed under different wave generation conditions in oceans, sea or coastal areas. The present monograph considers wind waves in terms of the most general formulation of the problem as a probable hydrodynamic process with wide spatial variability. It ranges between the global scale of the oceans, whose typical size is comparable with the Earth's radius, to the regional and local scales of the seas, including water areas limited in space with significant current or depth gradients in coastal zones, where waves cease their existence having propagated tens of thousand miles."
This volume summarises the materials presented at the NATO Advanced Research Workshop on Sea-Dumped Chemical Munitions, held in Kaliningrad (Moscow Region), Russia, in January 1995. The conference was sponsored by the NATO Division of Scientific and Environmental Affairs in the framework of its outreach programme to develop co-operation between NATO member countries and the Cooperation Partner countries in the area of disarmament technologies. The problem of the ecological threat posed by chemical weapons (CW) dumped in the seas after the Second World War deserves considerable international attention: the amount of these weapons, many of them having been captured from the German Army, is assessed at more than three times as much as the total chemical arsenals reported by the United States and Russia. They were disposed of in the shallow depths of North European seas - areas of active fishing - in close proximity to densely populated coastlines, with no consideration of the long-term consequences. The highly toxic material have time and again showed up, for instance when retrieved occasionally in the fishing nets, attracting local media coverage only. Nevertheless, this issue has not yet been given adequate and comprehensive scientific analysis, the sea-disposed munitions are not covered by either the Chemical Weapons Convention or other arms control treaties. In fact, the problem has been neglected for a long time on the international level. Only recently were official data made available by the countries which admitted conducting dumping operations.
Humans have always been fascinated by marine life, from extremely small diatoms to the largest mammal that inhabits our planet, the blue whale. However, studying marine life in the ocean is an extremely difficult propo- tion because an ocean environment is not only vast but also opaque to most instruments and can be a hostile environment in which to perform expe- ments and research. The use of acoustics is one way to effectively study animal life in the ocean. Acoustic energy propagates in water more efficiently than almost any form of energy and can be utilized by animals for a variety of purposes and also by scientists interested in studying their behavior and natural history. However, underwater acoustics have traditionally been in the domain of physicists, engineers and mathematicians. Studying the natural history of animals is in the domain of biologists and physiologists. Und- standing behavior of animals has traditionally involved psychologists and zoologists. In short, marine bioacoustics is and will continue to be a diverse discipline involving investigators from a variety of backgrounds, with very different knowledge and skill sets. The inherent inter-disciplinary nature of marine bioacoustics presents a large challenge in writing a single text that would be meaningful to various investigators and students interested in this field. Yet we have embarked on this challenge to produce a volume that would be helpful to not only beginning investigators but to seasoned researchers.
This is the first book to cover the Holocene geology and geomorphology of the 9,200 kilometers of the Brazilian coast. It is written for third and fourth year undergraduates, post-graduate students, scientists and man- ers. It characterizes the Brazilian coast in terms of the Holocene geology, geomorphology, oceanographic and climatic conditions, and the location, morphology and evolution of the barrier types. Separate chapters outline the types of barriers and coastal dynamics in each state, beginning in the south and proceeding to the north. Some emphasis is placed on the stretches of coast where the detailed morphology and stratigraphy of b- riers has been previously determined. To date, the Brazilian coastal barriers have been largely ignored by the international community, partly perhaps because much of the past research has tended to concentrate on barrier islands, of which there are very few in Brazil. In contrast, the Brazilian coastal barriers display a much wider range of types than is generally assumed. The biggest and most spectacular transgressive dunefield barriers in the world exist in Brazil, and dominate the southern and northeastern coasts. Many have never been described - fore. This volume provides a wealth of information on Holocene barrier types, evolution and dynamics. It provides managers, ecologists, biologists and botanists with much needed information on the geology, geomorph- ogy and dynamics of the genesis, types, functioning and ecosystems of the Holocene barriers extending along the entire Brazilian coast.
The systematic description of the knowledge accumulated on the physical oceanography, marine chemistry and pollution, and marine biology of the Caspian Sea forms the basis of this book. It presents the principal characteristic features of the environmental conditions of the sea and their changes in the second half of the 20th century. At present, the principal problems of the Caspian Sea are related to the interannual sea level changes and their forecast and to the estimation of the intensity of the chemical pollution of the sea and its impact upon the biota. Special attention is paid to socio-economic, legal, and political issues in the Caspian Sea region. This publication is based on numerous observational data collected by the authors of the chapters during sea expeditions, on the archive data of several Russian oceanographic institutions, as well as on the broad scientific literature mainly published in Russian editions. This book is addressed to the specialists concerned with research in various fields of physical oceanography, marine chemistry, pollution studies, and biology; solving a wide scope of problems from the regional climate to the mesoscale processes; and using a variety of methods from remote sensing of the seas to numerical and laboratory modeling.
Eugene Sharkov, of the Space Research Institute in Moscow, has here put together the most comprehensive description of the physical findings of an investigation into the spatio-temporal characteristics of the gravity of breaking waves. He's also described the foam activity in the open sea using methods and instruments of optical and microwave remote sensing. Numerous practical applications and illustrations are provided from air-borne, ship-borne and laboratory up-to-date experiments.
Without light there would be no life in the sea. Since the seas were the cradle for the evolution of all life forms, the theme of this book is central to our understanding of the interaction between living organisms and their environments. To express the breadth of research in this area, leading experts in topics as diverse as satellite imagery and molecular biology have contributed to this collection of essays on light and life in the sea, first published in 1990. Intended for all with an interest in the marine environment, this book aims to present the reader with a sampler of the exciting research that is underway and to provide an introduction to its broad compass.
During the past few decades, deep-sea research benefited greatly from a number of newly developed, highly sophisticated exploration techniques and comprehensive datasets, thanks to the immense industrial interest in deep-sea sediments. The book "Deep-Sea Sediments" focuses on the sedimentary processes operating within the various modern and ancient deep-sea environments. The individual chapters track the way of sedimentary particles from continental erosion or production in the marine realm, to transport into the deep sea, to final deposition on the sea floor. The sedimentary processes cover several types of sediment gravity flow and contour currents, pelagic settling and hemipelagic advection, planktic and benthic bioproductivity, and volcanoclastic sedimentation. In addition, the relationships between depositional environment and endobenthic organisms as well as early diagenetic processes at and within the deep-sea floor are dealt with. Facies models of the wide range of depositional products hold the key for a process-related interpretation of ancient deposits. Changes in sea-water chemistry, major innovations in organism evolution, and changes in external controls on sedimentation and productivity are discussed in the context of overarching trends in ocean history. Deep-sea sediments are not only of interest because of the
numerous interacting processes involved in their formation, but
they represent also a nearly inexhaustible archive of long-term
climatic changes. Consequently, the book also includes an
introduction to the climatic interpretation of the various proxies
that reveal global changes during the Mesozoic greenhouse and
Neogene icehouse conditions. In order to address the specific
interest of the oil and gas industry in deep-water sediments, the
investigation techniques that are applied in this context and the
methods to predict both the occurrences and the characteristics of
hydrocarbon reservoirs are included as well.
It is only in the past few years that methods of adequate sensitivity have become available for true ultra-trace metal determinations in water. In the case of organics in seawater it has now become possible to resolve the complex mixtures of organics in seawater and achieve the required very low detection limits. Fortunately, the interest in micro-constituents in the seawater both from the environmental and the nutrient balance points of view has coincided with the availability of advanced instrumentation capable of meeting the analytical needs. This complete and up-to-date compilation of the currently employed proven methods for the chemical analysis of seawaters includes 45 tables and 48 figures. The author presents the methods in a logical manner so that the reader can readily learn how to perform them and understand the types of instrumentation available. It helps the practitioner to implement these methods successfully into his laboratory and to apply them quickly and reliably. In addition, the detailed description of each method enables the analyst to set up new analytical methods meeting the needs for the detection of new analytes. The volume covers all aspects of the analysis of seawater using both classical and the most advanced recently introduced physical techniques. It is an invaluable source for the analysts, oceanographers, fisheries experts, politicians and decision maker engaged in seawater environmental protection.
Long regarded as an empty and inhospitable environment, the deep ocean is rapidly emerging as an ecological hot spot with a remarkable diversity of biological life. Yet, the world's oceans are currently on a dangerous trajectory of decline, threatened by acidification, oil and gas drilling, overfishing, and, in the long term, deep-sea mining, bioprospecting, and geo-engineering. In The Geopolitics of Deep Oceans, noted environmental sociologist John Hannigan examines the past, present and future of our planet's 'final frontier'. The author argues that our understanding of the deep - its definition, boundaries, value, ownership, health and future state - depends on whether we see it first and foremost as a resource cornucopia, a political chessboard, a shared commons, or a unique and threatened ecology. He concludes by locating a new storyline that imagines the oceans as a canary-in-the-mineshaft for gauging the impact of global climate change. The Geopolitics of Deep Oceans is a unique introduction to the geography, law, politics and sociology of the sub-surface ocean. It will appeal to anyone seriously concerned about the present state and future fate of the largest single habitat for life on our planet.
Dramatic advances in understanding global tectonics have been made in the last half century and the information and specific data acquired on the floor of the World Ocean by the scientific community probably has exc- ded that available in all previous time. With the benefit of new technology and advanced concepts in the earth sciences extensive exploration of the deep seabed became possible, and has been carried out in many parts of the world. Many features have been recognized and data recorded that are vital for understanding the fundamental processes that shape the earth=s surface and control the habitable environment. The data collected to date on the o- an floor and its physical environment greatly exceeds our understanding and appreciation of their fundamental importance in the earth sciences, and our ability to apply this knowledge effectively in improving our way of life. With his extensive scientific knowledge and unique experience from - ny cruises in association with scientists throughout the world, Dr. Evgeny Gurvich has made an outstanding contribution in acquiring basic data on hydrothermal and sedimentation processes in the ocean, as well as in the synthesis of data and concepts available from cruise reports and an extensive literature.
The current warming trends in the Arctic may shove the Arctic system into a seasonally ice-free state not seen for more than one million years. The melting is accelerating, and researchers were unable to identify natural processes that might slow the deicing of the Arctic. Such substantial additional melting of Arctic and Antarctic glaciers and ice sheets would raise the sea level worldwide, flooding the coastal areas where many of the world's population lives. Studies, led by scientists at the National Center for Atmospheric Research (NCAR) and the University of Arizona, show that greenhouse gas increases over the next century could warm the Arctic by 3-5 C in summertime. Thus, Arctic summers by 2100 may be as warm as they were nearly 130,000 years ago, when sea levels eventually rose up to 6 m higher than today.
Underwater acousticians and acoustical oceanographers use sound as the premier tool to determine the detailed characteristics of physical and biological bodies and processes at sea. Sounds in the Sea is a comprehensive and accessible textbook on ocean acoustics and acoustical oceanography. The first nine chapters provide the basic tools of ocean acoustics. The following fifteen chapters are written by many of the world's most successful ocean researchers. These chapters describe modern developments, and are divided into four sections: Studies of the Near Surface Ocean; Bioacoustical Studies; Studies of Ocean Dynamics; and Studies of the Ocean Bottom. This is an invaluable textbook for any course in ocean acoustics for the physical and biological ocean sciences, and engineering. It will also serve as a reference for researchers and professionals in ocean acoustics, and an excellent introduction to the topic for scientists from related fields.
Human experience has shown how great cities, nations, and empires have either collapsed or retired from their predominant stature when natural resources are depleted to an extent that exceeds the ability of the environment to restore or replenish their supply. This book explores the challenges facing coastal areas during the next few decades and the difficult decisions needed to prevent a repeat of the past. Establishing, maintaining or enhancing a sense of environmental security in different coastal regions and improving the management of critical infrastructure will require (i) matching human demands with available environmental resources; (ii) recognition of environmental security threats and infrastructure vulnerabilities; and, (iii) identification of the range of available options for preventing and/or minimizing natural disasters, technological failures, and/or terror actions.
This book is an overview of the state-of-the art developments in
sedimentology of tsunami-induced and tsunami-affected deposits,
namely tsunamiites. It also points out any problems that need
additional investigation, as well as providing insight into the
direction of future tsunamiite researches. Important
characteristics of tsunami wave and tsunami currents are explained.
There are reports on the sediments generated by recent tsunami
including the 2004 Indian Ocean tsunami presented. Tsunamiites
induced by other seismic activities, a submarine slump and a
volcanic eruption are investigated as well.
How to recognize and avoid running afoul of the creatures that bite or sting, are poisonous when eaten, or are otherwise potentially harmful. A handy reference for swimmers, boaters, divers, anglers, and water-lovers. |
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