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Books > Earth & environment > Earth sciences
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.
The Encyclopedia of Air adopts a unique approach to its topic, exploring air, wind, and atmosphere in all their natural and human aspects. Its 162 entries are alphabetically arranged and cover meteorological topics such as tornados, political issues such as air pollution, important scientists and aviators, technical topics such as airplanes and dirigibles, and cultural phenomena including musical, literary, and linguistic references to air and wind. Other entries cover important organizations such as the Clean Air Trust, legal issues such as the Clean Air Act, and aerial sports and recreation such as kite-flying. Containing over 50 photos and tables, this book also includes a "Guide to Selected Topics" that traces broad themes, a general bibliography, and a detailed subject index. Most of the entries provide "See also" references to related entries in the book, a listing of addition information resources--both print and electronic--and contact information for relevant groups and organizations.
This is the first book solely devoted to Cryopedology, the study of soils of cold regions. The analysis treats Cryosols as a three-part system (active layer, transition layer, permafrost). The book considers soil-forming factors, cryogenic processes, and classification and distribution of Cryosols. Cryosols of the Arctic, Antarctica, and the high mountains are considered in detail. The chapters address cryosols and earth-system science, cryosols in a changing climate, cryosols databases and their use, and management of cryosols. The book is rich in color photographs and highlights the author's 43 field trips to Antarctica, the Arctic, and alpine areas.
"Earthquakes and Coseismic Surface Faulting on the Iranian Plateau" is a comprehensive and well-illustrated multi-disciplinary research work that analyzes the human and physical aspects of the active faults and large-magnitude earthquakes since ancient times on the Iranian Plateau. The long-term historical, archaeological, and sociological record of earthquakes discussed here gives insight into earthquake magnitudes, recurrences, fault segmentation, clustering, and patterns of coseismic ruptures from prehistoric times to the present. The first part of the book examines oral traditions and literature of the region concerned with earthquakes, particularly in folklore, epic literature, and theology. The second part assesses dynamic phenomena associated with earthquakes, including active tectonics, archaeoseismicity, and coseismic surface faulting throughout the twentieth century. This work is a valuable technical survey and an essential
reference for understanding seismic hazard analysis and earthquake
risk minimization in earthquake-prone developing and developed
countries throughout the world.
Silicon (Si) plays a significant role in the resistance of plants to multiple stresses including biotic and abiotic stresses. Silicon is also the only element that does not damage plants when accumulated in excess. However, the contribution of Si to plant growth has been largely ignored due to its universal existence in the earth's crust. From numerous intensive studies on Si, initiated in Japan about 80 years ago, Japanese scientists realized that Si was important for the healthy growth of rice and for stability of rice production. In a worldwide first, silicon was recognized as a valuable fertilizer in Japan. The beneficial effects of Si on rice growth in particular, are largely attributable to the characteristics of a silica gel that is accumulated on the epidermal tissues in rice. These effects are expressed most clearly under high-density cultivation systems with heavy applications of nitrogen. Si is therefore recognized now as an ''agronomically essential element'' in Japan. Recently, Si has become globally important because it generates
resistance in many plants to diseases and pests, and may contribute
to reduced rates of application of pesticides and fungicides.
Silicon is also now considered as an environment-friendly element.
The achievements of Si research in Japan are introduced in this
book, in relation to soils, fertilizers and plant nutrition.
"Advances in Agronomy" continues to be recognized as a leading
reference and a first-rate source for the latest research in
agronomy. As always, the subjects covered are varied and exemplary
of the myriad of subject matter dealt with by this long-running
serial.
Explores the complex physico-chemical processes involved in active volcanism and dynamic magmatism Understanding the magmatic processes responsible for the chemical and textural signatures of volcanic products and igneous rocks is crucial for monitoring, forecasting, and mitigating the impacts of volcanic activity. Dynamic Magma Evolution is a compilation of recent geochemical, petrological, physical, and thermodynamic studies. It combines field research, experimental results, theoretical approaches, unconventional and novel techniques, and computational modeling to present the latest developments in the field. Volume highlights include: Crystallization and degassing processes in magmatic environments Bubble and mineral nucleation and growth induced by cooling and decompression Kinetic processes during magma ascent to the surface Magma mixing, mingling, and recharge dynamics Geo-speedometer measurement of volcanic events Changes in magma rheology induced by mineral and volatile content The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
This book presents investigations on the Earth's seismic structure using both active-source and natural earthquake records. It discusses the ground-truth data obtained from the TAiwan Integrated GEodynamics Research (TAIGER) active-source experiments that provides excellent and unique insights into the shallow crustal structures beneath Taiwan. It also explores the full-wave sensitivity kernels, which account for the effects of all possible wave interferences involved in shear-wave splitting and therefore loosen the restrictions on source-receiver geometry amenable to shear-wave splitting analysis. Moreover, it describes the 3D Frechet kernels, which enable us to resolve the vertical and lateral variations in seismic anisotropy and obtain 3D images of the Earth's anisotropic structure, as well as the practice in Southern California that enables us to infer the state of the stress and strain in the lithosphere and the dynamics of the asthenospheric mantle flow for a better understanding of the strength and deformation in the upper mantle beneath the San Andreas Fault system.
In general, lives of noteworthy accomplishment are led by people with an obvious talent, or more than one. Occasionally, though, someone with no discernible gift whatsoever may distinguish him or herself with a remarkable life. Such cases invite the question of how? How did it happen? With age I have realised that mine is such a life, and, inevitably, I have asked that question. It may happen in cases like this that, as one searches for an answer, one looks for precedents: or even for gifts not inherent in oneself but from outside. I did neither: it came to me unbidden. As I sang, the lines in the hymn resonated so powerfully I could not get away from them: ‘As noiseless let Thy blessings fall as fell Thy manna down.’ That was it. Unobtrusively I had been blessed – again and again and again. A dozy, unsocialised child follows a boringly ordinary course through life until gradually things start to work out for him in increasingly extraordinary ways. The only prize I ever won at school was the Natural History Prize, no academic accolades or colours for any sport. I was rewarded for loving undemanding nature; almost a non-prize. Nearly fifty years later, in a small town I had never visited before I was introduced to the author of a slim volume on the geography of the area. “Not THE Nick Norman,” she asked. I might have blushed. In 1987, aged 42 I had married, and gone on to father two children, one now a top lawyer, the other on a similar trajectory in medicine. Having dreamt of being a farmer, I owned a farm in Franschhoek, which put me in about the most envied group of people in South Africa. After a successful career in mineral exploration in Africa and South America I turned my hand to writing about geology in a way accessible to lay readers. Three best-sellers followed. The Red Sea opened up and the River Jordan stopped flowing, for the Israelites to reach their land of milk and honey. In between, though, there were 40 years in the wilderness. This is my narrative. Yours will be different. Unpack it and you will find blessing after blessing. See how I found mine.
This book presents the basic theories of Plastic Mechanics of Geomaterial, including the static and dynamic mechanical properties, nonlinear and classical plastic theory, yield surface theory, hardening model, flow rule and loading-unloading criterion, the calculation theory of principal stress axe rotation, and limit analysis of geomaterial and the latest advances in FEM limit analysis. It also set forth the typical static and dynamic constitutive model of geomaterial in detail. Broadening our understanding of the basic mechanical properties and constitutive model for geomaterial, the book helps readers to establish and select the most appropriate constitutive model according to the specific engineering problems and geomaterial characteristics. This book is a valuable resource for designers and researchers in fields related to geotechnical engineering, and it can also be used as a textbook for graduate courses.
This book offers a comprehensive review of the landscapes and ecosystems of the Upper Yellow River. It focuses on landscapes as a platform for considering environmental values and issues across the region. The book is based on extensive field-based analyses, applications, and photographs.
This book gives a comprehensive presentation of our present understanding of the Earth's Hydrological cycle and the problems, consequences and impacts that go with this topic. Water is a central component in the Earth's system. It is indispensable for life on Earth in its present formand influences virtually every aspect of our planet's life support system. On relatively short time scales, atmospheric water vapor interacts with the atmospheric circulation and is crucial in forming the Earth's climate zones. Water vapor is the most powerful of the greenhouse gases and serves to enhance the tropospheric temperature. The dominant part of available water on Earth resides in the oceans. Parts are locked up in the land ice on Greenland and Antarctica and a smaller part is estimated to exist as groundwater. If all the ice over the land and all the glaciers were to melt, the sea level would rise by some 80 m. In comparison, the total amount of water vapor in the atmosphere is small; it amounts to 25 kg/m2, or the equivalent of 25 mm water for each column of air. Yet atmospheric water vapor is crucial for the Earth s energy balance. The book gives an up to date presentation of the present knowledge.Previously published in Surveys in Geophysics, Volume 35, No. 3, 2014"
This book provides historical perspectives on the climate apprehensions of scientists and the general public from the Englightenment to the late twentieth century. Issues discussed include what people have understood, experienced, and feared about the climate and its changes in the past; how privileged and authoritative positions on climate have been established; the paths by which we have arrived at our current state of knowledge and apprehension; and what a study of the past has to offer to the interdisciplinary investigation of environmental problems.
The first systematic examination of the role of geomorphological processes in the cycling of carbon through the terrestrial system. Argues that knowledge of geomorphological processes is fundamental to understanding the ways in which carbon is stored and recycled in the terrestrial environment Integrates classical geomorphological theory with understanding of microbial processes controlling the decomposition of organic matter Develops an interdisciplinary research agenda for the analysis of the terrestrial carbon cycle Informed by work in ecology, microbiology and biogeochemistry, in order to analyse spatial and temporal patterns of terrestrial carbon cycling at the landscape scale Considers the ways in which, as Humanity enters the Anthropocene, the application of this science has the potential to manage the terrestrial carbon cycle to limit increases in atmospheric carbon
The book summarizes the occurrence, geochemistry, mineralogy, petrology and phase-equilibria studies in air and under high pressures related to the most intriguing group of potassium-rich mafic and ultramafic rocks, often including host of exotic mineral assemblages including feldspathoids. Mantle-derived K-rich melts had intrigued most of the founders of Geology and many of the later experts in the field of Igneous Petrology, because they are sometimes associated with carbonatites and even diamond. They tend to contain anomalous concentration of many such elements as K, Rb, Sr, U, F, P, etc., along with Ni, Co and Cr indicating a mixture of crust and mantle materials. Although these rocks occur rarely in ancient geologic time, they have been erupting mostly in modern geological history (less than last 120 Ma or so). Are the old age data real or the result of a sampling problem? Modern observations leave no doubt that sediments must be subducted on a large scale. There is now evidence that the upper mantle (and perhaps even the lower mantle) is not homogeneous but rather like a fruit cake, and that there are thermal anomalies in the mantle resulting from deep mantle plumes or subduction. Is this related to release of these unusual rocks clearing the mantle of left over subduction materials? This volume, written for those interested in the geochemistry of K-rich melts from the deep Earth, reviews the present state of knowledge of these unique igneous rocks. The author is an expert in the field of Igneous Petrology and the book will serve as a valuable reference book for researchers and academicians in the discipline. |
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