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Books > Earth & environment > Earth sciences > Geology & the lithosphere > Geological surface processes (geomorphology)
This proceedings book investigates the possibilities for creating new models of the continental lithosphere structure by integrating methods from geothermodynamics and deep geoelectrics. It particularly focuses on the use of powerful controlled sources of electromagnetic field to study the nature of deep geophysical boundaries. It also presents research related to the transition boundary between the brittle and quasiplastic states of Earth's crust matter and the position of creep areas in Earth's crust, as well as geothermal and rheological studies in combination with the deep electromagnetic soundings - a promising direction that allows the tectonophysical reconstruction of natural stresses in the lithosphere. The experimental study results and tectonophysical modeling are discussed in the context of the Fennoscandinavian shield, the Indian Craton, the Himalayas, Eastern Tibet and the Eurasian continent as a whole. The book appeals to researchers interested in solid Earth physics.
This text gives an overview of the main landslide field sites. It
covers aspects of recent landslide research at the University of
Wollongong.
In Search of Ancient Tsunamis takes readers on a journey through the science of tsunamis and acts as a "how to" guide in the geology, geomorphology, anthropology, and archaeology of these devastating phenomena. The book draws on examples from around the world and includes numerous personal accounts of field and laboratory experiences. This journey through tsunami science is framed within the search for ancient tsunamis in the northern part of Chile, a desert environment that requires all the skillsets available to the tsunami researcher. This is a region where numerous attempts to find evidence have failed largely due to the hostile environment that refuses to play by the rules. The story is told through the very personal lens of the author with first-hand accounts of the trials and tribulations of fieldwork and local eccentricities, of serendipitous events, and a growing awareness and understanding of a wide variety of techniques that can be applied to the science. The journey is populated with side stories engaging the reader with deeper insights into the countries, study areas, joys and disappointments of carrying out scientific research across the globe. It is both a very personal story as well as an in-depth look at the science involved in an increasingly sophisticated and interdisciplinary search to better understand the true nature of tsunamis. It contains the wisdom of elders, "Eureka" moments of discovery, and a look at the very latest developments of understanding the effects of ancient tsunamis on prehistoric human populations.
Because water is one of the most important life-supporting media on the planet, the quality of aquatic ecosystems is of great interest to the entire world population. One of the factors that greatly affects water quality is the condition of the underlying sediment layer. The Manual of Physico-Chemical Analysis of Aquatic Sediments addresses the best methods for quantitative determination of chemical forms of different elements and compounds, bioassessment techniques, and determination of physical properties of sediments. Essential information for surveying, research, and monitoring of sediment contamination is covered. This manual will aid sediment biologists, geochemists, limnologists, regulatory program managers, environmental chemists and toxicologists and environmental consultants in preparing plans for proper remedial action.
Sandy beaches represent some of the most dynamic environments on Earth and examining their morphodynamic behaviour over different temporal and spatial scales is challenging, relying on multidisciplinary approaches and techniques. Sandy Beach Morphodynamics brings together the latest research on beach systems and their morphodynamics and the ways in which they are studied in 29 chapters that review the full spectrum of beach morphodynamics. The chapters are written by leading experts in the field and provide introductory level understanding of physical processes and resulting landforms, along with more advanced discussions.
Salt and Sediment Dynamics presents a thorough treatment of salt
and sediment interactions and the implications of such interactions
for sub-salt exploration. The book emphasizes and utilizes recent
discoveries on many aspects of salt and sediment interactions,
provides the theoretical framework for interpreting the increasing
amount of available data on salt and sediments, and develops a
self-consistent dynamical evolution model of salt structures and
their interaction with surrounding sediments.
Sand dunes are a globally important depositional landform and sedimentary system. Their origins and dynamics are important in understanding how deserts have evolved in response to climate change and changes in sand supply and mobility, and how they will continue to evolve in the future. This book provides a state-of-the-art review of the characteristics of desert dunes and their sediments, and explores their dynamics on timescales from days to millennia as they respond to changes in wind speed and direction, precipitation and sand supply. This extensively revised edition reflects the advances in our understanding of desert dunes, their dynamics and history; and covers recent developments including the luminescence dating revolution, ground penetrating radar and advances in numerical modeling. Also covering dunes on Mars and Titan, this authoritative reference is a must-have for researchers and graduate students working on desert dunes and aeolian geomorphology.
This book presents practical hydraulic and river engineering research along with fluvial geomorphological concepts, and links the theoretical and practical knowledge of people working every day with rivers, streams, and hydraulic structures to fluvial geomorphology. Besides providing a guide for professionals, this book also provides material for students to acquire the knowledge and skills to rehabilitate rivers, streams, and waterways.
A concise account of all major branches of sedimentary geology, highlighting the connecting links between them. Introduction; Processes of sedimentation; Sedimentary texture; Sedimentary petrology; Hydraulics, sediment transportation and structures of mechanical origin; Sedimentary environments and facies; Tectonics and sedimentation; Stratigraphy and sedimentation; Basin analysis: A synthesis; References; Index.
Gravity hazards are a major concern to those living in mountainous areas. To protect infrastructure and human life in these areas, engineers require numerical tools for trajectory analysis, for application from fragmental rockfalls to large-scale avalanches or landslides. This book explores state-of-the-art methods to model the propagation (flows and stops) of masses, using the discrete element method (DEM) to study the evolution of kinetics during an event. Taking into account the shape of the blocks and the topology of the terrain provides an explicit and sophisticated consideration of geometries, eliminating the need for stochastic inputs to rockfall simulations. This method is validated experimentally, before the authors apply it to real case studies. The book ends with an introduction to and comparison with the material point method (MPM), a new and promising approach able to bridge the gap between cases dominated by discreteness and those involving a very large number of elements. Engineering consulting firms, researchers and students should find the approaches outlined in this book useful, whether designing prevention and protection systems for gravity hazards, or exploring new ways to model gravity hazards.
For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.
In geomorphology, landform inheritance refers to the inherited relationship of different landform morphologies in a certain area during the evolutionary process. This book studies loess landform inheritance based on national basic geographic data and GIS spatial analysis method. It reveals the Loess Plateau formation mechanism and broadens the understanding of spatial variation pattern of loess landform in the Loess Plateau.
The text on tidal hydraulic engineering includes discussion of: basic characterstics of tides and tidal propagation; hydrographic surveys in tidal rivers; and design considerations for tidal sluice gates for drainage and fish farms in aquaculture.
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 volume presents a suite of detailed stratigraphic and sedimentologic investigations of the Eocene Green River Formation of Wyoming, Colorado and Utah, one of the world's foremost terrestrial archives of lacustrine and alluvial deposition during the warmest portion of the early Cenozoic. Its twelve chapters encompass the rich and varied record of lacustrine stratigraphy, sedimentology, geochronology, geochemistry and paleontology. Chapters 2-9 provide detailed member-scale synthesis of Green River Formation strata within the Greater Green River, Fossil, Piceance Creek and Uinta Basins, while its final two chapters address its enigmatic evaporite deposits and ichnofossils at broad, interbasinal scale.
This book offers a collection of conference articles presented at the Second International Young Scientists Forum on Soil and Water Conservation and ICCE symposium 2018 "Climate Change Impacts on Sediment Dynamics: Measurement, Modelling, and Management" held at Moscow from 27 to 31 August 2018. This conference was organized by World Association of Soil and Water Conservation (WASWAC) and Lomonosov Moscow State University in cooperation with the International Commission on Continental Erosion of the International Association of Hydrological Sciences and World Large rivers Initiative. Topics in this book cover a wide range of questions related to fluvial geomorphology, water studies, and sediment transport.
Rivers are important agents of change that shape the Earth's surface and evolve through time in response to fluctuations in climate and other environmental conditions. They are fundamental in landscape development, and essential for water supply, irrigation, and transportation. This book provides a comprehensive overview of the geomorphological processes that shape rivers and that produce change in the form of rivers. It explores how the dynamics of rivers are being affected by anthropogenic change, including climate change, dam construction, and modification of rivers for flood control and land drainage. It discusses how concern about environmental degradation of rivers has led to the emergence of management strategies to restore and naturalize these systems, and how river management techniques work best when coordinated with the natural dynamics of rivers. This textbook provides an excellent resource for students, researchers, and professionals in fluvial geomorphology, hydrology, river science, and environmental policy.
Remote Sensing of Geomorphology, Volume 23, discusses the new range of remote-sensing techniques (lidar, structure from motion photogrammetry, advanced satellite platforms) that has led to a dramatic increase in terrain information, and as such provided new opportunities for a better understanding of surface morphology and related Earth surface processes. As several papers have been published (including paper reviews and special issues) on this topic, this book summarizes the major advances in remote sensing techniques for the analysis of Earth surface morphology and processes, also highlighting future challenges. Useful for MSc and PhD students, this book is also ideal for any scientists that want to have a single volume guideline to help them develop new ideas. In addition, technicians and private and public sectors working on remote sensing will find the information useful to their initiatives.
Glaciers and ice sheets have been melting significantly during
recent decades, posing environmental threats at local, regional and
global scales. Changes in glaciers are one of the clearest
indicators of alterations in regional climate, since they are
governed by changes in accumulation (from snowfall) and ablation
(by melting of ice). Glacier changes have been measured for the
last century by traditional field measurements, resulting in long
time series for a few glaciers. Remote sensing data and methods,
and geographic information systems, provide the means to allow
glacier changes to be monitored at a global scale, to be analysed
rapidly and to store the results and present information to both
scientific and popular audiences in a way which was not possible
before the digital revolution. Remote sensing of glaciers began
with terrestrial and aerial photography during the middle of the
20th century, but today the discipline embraces a large variety of
data types from laser scanner data to very high resolution
satellite imagery, which can be applied to the mapping of glacier
changes in terms of area, surface zonation or thickness. This book
highlights the history of the remote sensing of glaciers, the
physics of glaciers and remote sensing of them, and focuses
particularly on modern data and methods used by remote sensing
specialists and glaciologists. The book presents examples of
glacier research carried out, for example in the Alps, Norway,
Iceland, Caucasus, Patagonia, Rocky Mountains, Pakistan,
Antarctica, New Zealand, and Svalbard.
This volume is entirely devoted to the life and work of the world's most famous geomorphologist, William Morris Davis (1850-1934). It contains a treatment in depth of Davis' many contributions to the study of landforms including: the cycle of erosion denudation chronology arid and karst geomorphology the coral reef problem.
This volume provides a global treatment of historical and regional geomorphic work as it developed from the end of the nineteenth century to the hiatus of the Second World War. The book deals with the burgeoning of the eustatic theory, the concepts of isostasy and epeirogeny, and the first complete statements of the cycle of erosion and of polycyclic denudation chronology.
Worldwide demand for sand and gravel is increasing daily, as the need for these materials continues to rise, for example in the construction sector, in land filling and for transportation sector based infrastructural projects. This results in over-extraction of sand from channel beds, and hampers the natural renewal of sediment, geological setup and morphological processes of the riverine system. In India, illegal sand mining (of alluvial channels) and gravel mining (of perennial channels) are two anthropogenic issues that negatively affect the sustainable drainage system. Along the Kangsabati River in India, the consequences of sand mining are very serious. The construction of Mukutmonipur Dam (1958) on the river causes huge sediment deposition along the middle and downstream areas, these same areas are also intensely mined for sand (instream and on the flood plain). Geospatial models are applied in order to better understand the state and the resilience of stream hydraulics, morphological and river ecosystem variables during pre-mining and post-mining stages, using micro-level datasets of the Kangsabati River. The book also includes practicable measures to minimize the environmental consequences of instream mining in respect to optimum sand mining. It discusses the threshold limits of each variable in stream hydraulics, morphological and river ecological regime, and also discusses the most affected variables. Consequently, all outputs will be very useful for students, researchers, academicians, decision makers and practitioners and will facilitate applying these techniques to create models for other river basins.
The Guayana Highlands in northeastern tropical America, rising from lowland rain forests and savannas up to 3000 m elevation, are characterized by ancient tablelands called "tepuis." The peatlands that developed on the tepuis constitute unique and fascinating ecosystems and are the focus of this volume, which starts with an overview of tropical and subtropical peats, followed by an introduction to the geo-ecological features of the Guayana region as a whole, with special emphasis on the diversity of the vegetation cover from lowlands to uplands to highlands. The core subject centers on the properties and dating of the peat deposits and the interpretation of the chronological record in terms of past environmental changes. The well illustrated book will appeal to a broad range of scientists interested in tropical highland peats, including quaternarists, soil scientists, geomorphologists, geographers, geologists, ecologists, botanists, hydrologists, conservationists, and land use planners.
Groundwater is Africa 's most precious natural resource,
providing reliable water supplies for many people. Further
development of groundwater resources is fundamental to increasing
access to safe water across the continent to meet coverage targets
and reduce poverty. There is also an increasing interest in the use
of groundwater for irrigated agriculture as the climate becomes
more variable. Sustainable development of the resource is not a
trivial task and depends crucially on an understanding of the
hydrogeology and people with the skills to make informed decisions
on how groundwater can best be developed and managed in a
sustainable fashion. Despite these obvious needs, however, little
attention has been paid to the systematic gathering of information
about groundwater resources in the past few decades, with the
result that data are patchy, knowledge is limited and investment is
poorly targeted. |
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