Download or read book Simulation Model of Erosion and Deposition on a Barchan Dune written by Alan D. Howard and published by . This book was released on 1977 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation Model of Erosion and Deposition on a Barchan Dune written by and published by . This book was released on 1977 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1984 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulations of Sand Dune Morphodynamics and Their Application to the Mu Us Dune Field China written by Fei Ma and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semi-arid landscapes are heavily influenced by climate change and human activities. Sand dunes in the Mu Us region, China experienced rapid stabilization during the past few decades, which is postulated to be a response to recent climate change (Xu et al., 2015) and land use change (Mason et al., 2008). With the information extracted from high-resolution Google Earth imagery and ASTER GDEM data and machine-learning models, I evaluated the relative importance of multiple environmental and anthropogenic variables for the recent changes in dune activity and vegetation cover. Spatial variation in climate variables contributed little, while elevation, human activities and vegetation spatial distribution played significant roles in both dune migration rate and vegetation cover change rate. To further visualize dune morphodynamic response to external forcings over time, I modified a Cellular Automaton (CA) model (Werner, 1995) and fit it to the Mu Us dune field by tuning model parameters (downwind transport jump unit, slab thickness, deposition probability, and erosion probability) . The model produced realistic barchans dune forms with only wind processes included, while parabolic dune forms were simulated with a combination of wind and anchoring vegetation. Through adjusting erosion probability (pe), the model is capable of testing various wind and vegetation growth scenarios. With a linearly declining pe, the vegetation integrated CA model was used to simulate the increase in precipitation in the late 1990s, and it produced stabilized parabolic dune forms that closely resemble those observed in the field. The successful simulation of realistic dune form changes also proves the CA model to be an effective research and educational tool for exploring interactions among climate, geomorphology and vegetation and predicting future trends of dune activity.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1977 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eolian Sediments and Processes written by M.E. Brookfield and published by Elsevier. This book was released on 2000-04-01 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers cover the entire spectrum of eolian investigations, ranging from the microscopic level to regional synthesis as well as ancient eolian deposits and their interpretation.
Download or read book Desert Geomorphology written by Ronald U. Cooke and published by CRC Press. This book was released on 1993-01-14 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Including recent research findings from terrestrial satellite imagery, the study of planetary landscapes, and advances in laboratory work, this also covers the environmental processes involved in desertification and the solution of planning and
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1984 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dune Erosion During Storm Surges written by Jacob Simon Marie van Thiel de Vries and published by IOS Press. This book was released on 2009 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because large parts of The Netherlands lie below sea level and are largely protected from flooding by a narrow strip of sandy beaches and dunes, optimal management of this coastal strip is of vital importance. This work extends the existing knowledge of dune erosion during storm surges as it occurs along the Dutch coast. Among the areas discussed are: a large scale erosion experiment designed to improve insight into near dune hydrodynamics, sediment transport and interaction between dune face and swash zone; detailed modeling to study dune erosion physics, validated against measurements, and a morphodynamic dune erosion model applied in a variety of dune erosion conditions. This publication represents a valuable contribution to an improved understanding of dune erosion, an increasingly important area of study with regard to climate change and rising sea levels.
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1978 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1978 with total page 1756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book R D Abstracts written by Technology Reports Centre (Great Britain) and published by . This book was released on 1977 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomorphology of Desert Dunes written by Nicholas Lancaster and published by Cambridge University Press. This book was released on 2023-02-28 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Arid Zone Geomorphology written by David S. G. Thomas and published by John Wiley & Sons. This book was released on 2011-03-14 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of Arid Zone Geomorphology aims to encapsulate the advances that have been made in recent years in the investigation and explanation of landforms and geomorphological processes in drylands. Building on the success of the previous two editions, the Third Edition has been completely revised and updated to reflect the latest developments in the field. Whilst this latest edition will remain a comprehensive reference to the subject, the book has been restructured to include regional case studies throughout to enhance student understanding and is clearly defined into five distinct sections; Firstly, the book introduces the reader to Large Scale Controls and Variability in Drylands and then moves on to consider Surface Processes and Characteristics; The Work of Water, The Work of the Wind. The book concludes with a section on Living with Dryland Geomorphology that includes a chapter on geomorphological hazards and the human impact on these environments. Once again, recognised world experts in the field have been invited to contribute chapters in order to present a comprehensive and up-to-date overview of current knowledge about the processes shaping the landscape of deserts and arid regions. In order to broaden the appeal of the Third Edition, the book has been reduced in extent by 100 pages and the Regional chapters have been omitted in favour of the inclusion of key regional case studies throughout the book. The Editor is also considering the inclusion of a supplementary website that could include further images, problems and case studies.
Download or read book Geomorphological Techniques written by Andrew Goudie and published by Routledge. This book was released on 2003-09-02 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: The specialist contributors to Geomorphological Techniques have thoroughly augmented and updated their original, authoritative coverage with critical evaluations of major recent developments in this field. A new chapter on neotectonics reflects the impact of developments in tectonic theory, and heavily revised sections deal with advances in remote sensing, image analysis, radiometric dating, geomorphometry, data loggers, radioactive tracers, and the determination of pore water pressure and the rates of denudation.
Download or read book Treatise on Geomorphology written by and published by Academic Press. This book was released on 2013-02-27 with total page 6392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changing focus and approach of geomorphic research suggests that the time is opportune for a summary of the state of discipline. The number of peer-reviewed papers published in geomorphic journals has grown steadily for more than two decades and, more importantly, the diversity of authors with respect to geographic location and disciplinary background (geography, geology, ecology, civil engineering, computer science, geographic information science, and others) has expanded dramatically. As more good minds are drawn to geomorphology, and the breadth of the peer-reviewed literature grows, an effective summary of contemporary geomorphic knowledge becomes increasingly difficult. The fourteen volumes of this Treatise on Geomorphology will provide an important reference for users from undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic. Information on the historical development of diverse topics within geomorphology provides context for ongoing research; discussion of research strategies, equipment, and field methods, laboratory experiments, and numerical simulations reflect the multiple approaches to understanding Earth’s surfaces; and summaries of outstanding research questions highlight future challenges and suggest productive new avenues for research. Our future ability to adapt to geomorphic changes in the critical zone very much hinges upon how well landform scientists comprehend the dynamics of Earth’s diverse surfaces. This Treatise on Geomorphology provides a useful synthesis of the state of the discipline, as well as highlighting productive research directions, that Educators and students/researchers will find useful. Geomorphology has advanced greatly in the last 10 years to become a very interdisciplinary field. Undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic will find the answers they need in this broad reference work which has been designed and written to accommodate their diverse backgrounds and levels of understanding Editor-in-Chief, Prof. J. F. Shroder of the University of Nebraska at Omaha, is past president of the QG&G section of the Geological Society of America and present Trustee of the GSA Foundation, while being well respected in the geomorphology research community and having won numerous awards in the field. A host of noted international geomorphologists have contributed state-of-the-art chapters to the work. Readers can be guaranteed that every chapter in this extensive work has been critically reviewed for consistency and accuracy by the World expert Volume Editors and by the Editor-in-Chief himself No other reference work exists in the area of Geomorphology that offers the breadth and depth of information contained in this 14-volume masterpiece. From the foundations and history of geomorphology through to geomorphological innovations and computer modelling, and the past and future states of landform science, no "stone" has been left unturned!
Download or read book Physics and Modelling of Wind Erosion written by Yaping Shao and published by Springer Science & Business Media. This book was released on 2000-11-30 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive summary of the recent developments in wind-erosion research and a clear outline of its future directions. The physics of wind-erosion, from particle entrainment to transport and deposition, is described with rigor from the viewpoints of fluid dynamics and soil physics. The techniques for quantitative wind-erosion prediction through computational modelling constitutes a unique feature of this book in contrast to others published in the same field. For the first time, wind-erosion has been considered systematically as a multidisciplinary subject. The author has advocated the development of integrated wind-erosion modelling systems which couple dynamic models for the atmosphere and land surface with spatially distributed data for land-surface conditions. The successful applications of such a system have demonstrated its usefulness in wind-erosion assessment and prediction on regional to continental scales. This book offers a valuable reference point for researchers and postgraduate students engaged in wind-erosion related studies, ranging from global climate change to atmospheric aerosols, dust storms, air quality, and land conservation.
