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Books > Earth & environment > Earth sciences > The hydrosphere > Oceanography (seas)
This book was first published in 2005. When an oceanic tidal wave that is primarily active on the water surface passes an ocean shelf or a region with a seamount, it is split into a less energetic surface wave and other internal modes with different wavelengths and propagation speeds. This cascading process, from the barotropic tides to the baroclinic components, leads to the transformation of tidal energy into turbulence and heat, an important process for the dynamics of the lower ocean. Baroclinic Tides demonstrates the analytical and numerical methods used to study the generation and evolution of baroclinic tides and, by comparison with experiments and observational data, shows how to distinguish and interpret internal waves. Strongly non-linear solitary internal waves, which are generated by internal tidal waves at the final stage of their evolution, are investigated in detail. This book is intended for researchers and graduate students of physical oceanography, geophysical fluid dynamics and hydroacoustics.
This book discusses the sources of uncertainty in future model projections of the tropical Pacific SST warming pattern under global warming. It mainly focuses on cloud radiation feedback and ocean dynamical effect, which reveal to be the two greatest sources of uncertainty in the tropical Pacific SST warming pattern. Moreover, the book presents a correction for model projections of the tropical Pacific SST warming pattern based on the concept of "observational constraints"; the corrected projection exhibits a more El Nino-like warming pattern.
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.
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.
The new edition of this successful textbook has been completely updated, with extensive new material on thermohaline processes in the ocean and their link to both abrupt and longer-term climate change. It will be an appropriate course and reference book for students studying earth and environmental sciences, oceanography, meteorology and climatology. The book will also be useful for students and teachers of geography, physics, chemistry and biology. First Edition Hb (1996): 0-521-45212-0 First Edition Pb (1996): 0-521-58268-7
The aim of this International Symposium on Dynamics of Vibro-Impact Systems is to provide a forum for the discussion of recent developments in the theory and industrial applications of vibro-impact ocean systems. A special effort has been made to invite active researchers from engineering, science, and applied mathematics communities. This symposium has indeed updated engineers with recent analytical developments of vibro-impact dynamics and at the same time allowed engineers and industrial practitioners to alert mathematicians with their unresolved issues. The symposium was held in Troy, Michigan, during the period October 1-3, 2008. It included 28 presentations grouped as follows: The first group comprises of nine papers dealing with the interaction of ocean systems with slamming waves and floating ice. It also covers related topics such as sloshing-slamming dynamics, and non-smooth dynamics associated with offshore structures. Moreover, it includes control issues pertaining to marine surface vessels. The second group consists of fifteen papers treats the interaction of impact systems with friction and their control, Hertzian contact dynamics, parameter variation in vibro-impact oscillators, random excitation of vibro-impact systems, vibro-impact dampers, oscillators with a bouncing ball, limiting phase trajectory corresponding to energy exchange between the oscillator and external source, frequency-energy distribution in oscillators with impacts, and discontinuity mapping. The third group is covered in four papers and addresses some industrial applications such as hand-held percussion machines, rub-impact dynamics of rotating machinery, impact fatigue in joint structures.
Proceedings of the International Meeting on UNEP's Regional Programmes in Mediterranean and Caribbean Seas, Genoa, Italy, 12-14 February 1992 which concentrated on three issues of particular interest: water quality, coastal zone management, sea-level rise and the risks and consequences of erosion and flooding.
On January 2, 1678, a fleet of French ships sank off the Venezuelan coast. This proved disastrous for French naval power in the region, and sparked the rise of a golden age of piracy. Tracing the lives of fabled pirates like the Chevalier de Grammont, Nikolaas Van Hoorn, Thomas Paine, and Jean Comte d'Estrées, The Lost Fleet portrays a dark age, when the outcasts of European society formed a democracy of buccaneers, settling on a string of islands off the African coast. From there, the pirates haunted the world's oceans, wreaking havoc on the settlements along the Spanish mainland and -- often enlisted by French and English governments -- sacking ships, ports, and coastal towns. More than three hundred years later, writer, explorer, and deep-sea diver Barry Clifford follows the pirates' destructive wake back to Venezuela. With the help of a lost map, drawn by the captain of the lost French fleet, Clifford locates the site of the disaster and wreckage of the once-mighty armada.
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.
The complex flows in the atmosphere and oceans are believed to be accurately modelled by the Navier-Stokes equations of fluid mechanics together with classical thermodynamics. However, due to the enormous complexity of these equations, meteorologists and oceanographers have constructed approximate models of the dominant, large-scale flows that control the evolution of weather systems. The simplifications often result in models that are amenable to solution both analytically and numerically. This volume and its companion explain why such simplifications to Newton's second law produce accurate, useful models and, just as the meteorologist seeks patterns in the weather, mathematicians seek structure in the governing equations. They show how geometry and analysis facilitate solution strategies.
In recent years air-sea interaction has emerged as a subject in its own right, encompassing small-scale and large-scale processes in both air and sea. Air-Sea Interaction: Laws and Mechanisms is a comprehensive account of how the atmosphere and the ocean interact to control the global climate, what physical laws govern this interaction, and its prominent mechanisms. The topics covered range from evaporation in the oceans, to hurricanes, and on to poleward heat transport by the oceans. By developing the subject from basic physical (thermodynamic) principles, the book is accessible to graduate students and research scientists in meteorology, oceanography, and environmental engineering. It will also be of interest to the broader physics community involved in the treatment of transfer laws, and thermodynamics of the atmosphere and ocean.
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.
Blending history and anecdote, geography and reminiscence, science and exposition, the "New York Times" bestselling author of "Krakatoa" tells the breathtaking saga of the magnificent Atlantic Ocean, setting it against the backdrop of mankind's intellectual evolution Until a thousand years ago, no humans ventured into the Atlantic or imagined traversing its vast infinity. But once the first daring mariners successfully navigated to far shores--whether it was the Vikings, the Irish, the Chinese, Christopher Columbus in the north, or the Portuguese and the Spanish in the south--the Atlantic evolved in the world's growing consciousness of itself as an enclosed body of water bounded by the Americas to the West, and by Europe and Africa to the East. "Atlantic" is a biography of this immense space, of a sea which has defined and determined so much about the lives of the millions who live beside or near its tens of thousands of miles of coast. The Atlantic has been central to the ambitions of explorers, scientists and warriors, and it continues to affect our character, attitudes, and dreams. Poets to potentates, seers to sailors, fishermen to foresters--all have a relationship with this great body of blue-green sea and regard her as friend or foe, adversary or ally, depending on circumstance or fortune. Simon Winchester chronicles that relationship, making the Atlantic come vividly alive. Spanning from the earth's geological origins to the age of exploration, World War II battles to modern pollution, his narrative is epic and awe-inspiring.
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.
This is a modern, introductory textbook on the dynamics of the atmosphere and ocean, with a healthy dose of geophysical fluid dynamics. It will be invaluable for intermediate to advanced undergraduate and graduate students in meteorology, oceanography, mathematics, and physics. It is unique in taking the reader from very basic concepts to the forefront of research. It also forms an excellent refresher for researchers in atmospheric science and oceanography. It differs from other books at this level in both style and content: as well as very basic material it includes some elementary introductions to more advanced topics. The advanced sections can easily be omitted for a more introductory course, as they are clearly marked in the text. Readers who wish to explore these topics in more detail can refer to this book's parent, Atmospheric and Oceanic Fluid Dynamics: Fundamentals and Large-Scale Circulation, now in its second edition.
This book collects multidisciplinary chapters on the most important problems that arise at mid-ocean ridges. The mid-ocean ridge system is the longest continuous feature of the earth's surface. It is where the great majority of ocean floor is created and volumes of seafloor volcanism vastly exceed those on land. It provides the means for much of the heat loss from the interior of the earth. Chemicals as well as heat are extracted by flowing seawater through the rocks of the seafloor, leading to spectacular areas of hydrothermal venting, that affect ocean chemistry and global climate. The chapters range from studies of the mantle and magma generation within it, through tectonics of mid-ocean ridges, to the physical, chemical and biological dynamics of hydrothermal systems. The book will be of importance to specialists and researchers wishing to become informed of the latest developments in the science of mid-ocean ridges. It will prove especially useful for new scientists entering the field.
Our desire to understand the global carbon cycle and its link to the climate system represents a huge challenge. These overarching questions have driven a great deal of scientific endeavour in recent years: What are the basic oceanic mechanisms which control the oceanic carbon reservoirs and the partitioning of carbon between ocean and atmosphere? How do these mechanisms depend on the state of the climate system and how does the carbon cycle feed back on climate? What is the current rate at which fossil fuel carbon dioxide is absorbed by the oceans and how might this change in the future? To begin to answer these questions we must first understand the distribution of carbon in the ocean, its partitioning between different ocean reservoirs (the "solubility" and "biological" pumps of carbon), the mechanisms controlling these reservoirs, and the relationship of the significant physical and biological processes to the physical environment. The recent surveys from the JGOFS and WOCE (Joint Global Ocean Flux Study and World Ocean Circulation Ex periment) programs have given us a first truly global survey of the physical and biogeochemical properties of the ocean. These new, high quality data provide the opportunity to better quantify the present oceans reservoirs of carbon and the changes due to fossil fuel burning. In addition, diverse process studies and time-series observations have clearly revealed the complexity of interactions between nutrient cycles, ecosystems, the carbon-cycle and the physical envi ronment."
The Baltic Sea oceanographic research community is wide and the research history is over 100 years old. Nevertheless, there is still no single, coherent book on the physical oceanography of the Baltic Sea as a whole. There is a strong need for such a book, coming from working oceanographers as well as the university teaching programmes in advanced undergraduate to graduate levels. In the regional conference series in physical oceanography (Baltic Sea Science Conference, Baltic Sea Oceanographers' conference, Baltex-conferences) about 500 scientists take part regularly. Even more scientists work in the fields of marine biology, chemistry and the environment, and they need information on the physics of the Baltic Sea as well. There are nine countries bordering on the Baltic Sea and five more in the runoff area. The Baltic Sea as a source of fish, means of transportation and leisure activities is highly important to the regional society. In the runoff area there are a total of 85 million people. Research and protection strategies need to be developed, as the Baltic Sea is probably the most polluted sea in the world. Since the Baltic Sea has become an inner sea of the EU (apart from small shore parts of Russia in Petersburg and Kaliningrad), it is anticipated that the importance of the region will consequently rise. The book will arouse interest among students, scientists and decision makers involved with the Baltic problems. It will also give important background information for those working with biogeochemical processes in the Baltic Sea, because the physical forcing for those processes is of vital importance.
There are incentive indications that the growth of human population, the increasing use and abuse of natural resources combined with climate changes (probably due to anthropic pollution, to some extent) exert a considerable stress on closed (or semi-enclosed) seas and lakes. In many regions of the world, marine and lacustrine hydrosystems are (or have been) the object of severe or fatal alterations, from changes in regional hydrological regimes and/or modifications of the quantity or the quality of water resources associated with (natural or man-made) land reclamation, deterioration of geochemical balances (increased salinity, oxygen's depletion .. . ), mutations of ecosystems (eutrophication, dramatic decrease in biological diversity ... ) to geological disturbances and to the socio-economic perturbations which have been - or may be in the near future - the consequences of them. Seas and lakes are dying all over the world and some may be regarded as already dead and there is an urgent need to try to understand how this is happening and identify the causes of the observed mutations, weighing the relative effects of climatic evolution and anthropic interferences. This book is the outcome of the NATO Advanced Research Workshop, held in Liege in May 2003. The Workshop was organized at th the University of Liege as a follow on meeting to the 35 International Liege Colloquium on Ocean Dynamics, dedicated in 2003 to Dying and Dead Seas. The book contains the synthesis of the lectures given by 16 main speakers during the ARW.
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.
This book gives an overview of statistical turbulence-modelling with applications to oceanography and limnology. It discusses how these models can be derived from the Navier-Stokes equations, step by step simplifications result in models applicable to numerical simulations for realistic solutions. Results from one-dimensional simulations are shown for various oceanic and limnic water column studies. The integration of these turbulence models in three-dimensioanl models is discussed and some selected results are shown. The two-equation turbulence models prove to be a good compromise between accuracy and economy are published as a FORTRAN source code on the internet in the framework of the General Ocean Turbulence Model (GOTM) - see URL: http.//www.gotm.net. This web site also provides forcing and validation data for several idealized scenarios. The book and the home page enables graduate students and researchers to understand the theory and provides tools for the models.
This book addresses both fundamental and applied aspects of ocean waves including the use of wave observations made from satellites. More specifically it describes the WAM model, its scientific basis, its actual implementation, and its many applications. The three sections of the volume describe the basic statistical theory and the relevant physical processes; the numerical model and its global and regional applications; and satellite observations, their interpretation and use in data assimilation.
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 ! " ! # ! # ! # $%&'( ) * + , - , ) . / $%&01 $%&02 $%&01 $ %03 / 4%5 /%' $%&" /%' $%&16 $%&1& $%&'( ) $%&10 ) ) , 7 7 7 / 87 8 9 / 8 8 : : 8 8; 7 : : 8 * 8 ) 8 < ! ! ) ! & & & & 6 1 6 ' 6 ' & ' 0 1 5 1 = 1 5 5 & 5 & & ( 2 &0 1 00 3 ! 8! !; * > / 4 > * 4 4 < ? 7 7 7 7 7 ! 7 7 7 ! ! 7 @ 7 7 7 7 7 7 %;;;;;;;;;;;;; A; !; !; ! A C> B , * ! - C A 7 7 7 + + + + + + 7 4 - 7 4 - 7 7 - 7 7 - - 8 8 8 : ! A !A A ! ! A !A !A 8 : + - 7 $ $ $ $ $ $ $ + - 7 C C 7 7 C C 7 7 C C 7 C C - $ 7 C C 7 7 7 - C C C C @ @ @ 8;;
Teeming with weird and wonderful life--giant clams and mussels, tubeworms, "eyeless" shrimp, and bacteria that survive on sulfur--deep-sea hot-water springs are found along rifts where sea-floor spreading occurs. The theory of plate tectonics predicted the existence of these hydrothermal vents, but they were discovered only in 1977. Since then the sites have attracted teams of scientists seeking to understand how life can thrive in what would seem to be intolerable or extreme conditions of temperature and fluid chemistry. Some suspect that these vents even hold the key to understanding the very origins of life. Here a leading expert provides the first authoritative and comprehensive account of this research in a book intended for students, professionals, and general readers. Cindy Lee Van Dover, an ecologist, brings nearly two decades of experience and a lively writing style to the text, which is further enhanced by two hundred illustrations, including photographs of vent communities taken in situ. The book begins by explaining what is known about hydrothermal systems in terms of their deep-sea environment and their geological and chemical makeup. The coverage of microbial ecology includes a chapter on symbiosis. Symbiotic relationships are further developed in a section on physiological ecology, which includes discussions of adaptations to sulfide, thermal tolerances, and sensory adaptations. Separate chapters are devoted to trophic relationships and reproductive ecology. A chapter on community dynamics reveals what has been learned about the ways in which vent communities become established and why they persist, while a chapter on evolution and biogeography examines patterns of species diversity and evolutionary relationships within chemosynthetic ecosystems. Cognate communities such as seeps and whale skeletons come under scrutiny for their ability to support microbial and invertebrate communities that are ecologically and evolutionarily related to hydrothermal faunas. The book concludes by exploring the possibility that life originated at hydrothermal vents, a hypothesis that has had tremendous impact on our ideas about the potential for life on other planets or planetary bodies in our solar system. |
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