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Author: Gerd Sauermann
Publisher:
ISBN: 9783897227316
Category :
Languages : en
Pages : 189
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Book Description
Author: Gerd Sauermann
Publisher:
ISBN: 9783897227316
Category :
Languages : en
Pages : 189
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Book Description
Author: Ralph Bagnold
Publisher: Springer Science & Business Media
ISBN: 9400956827
Category : Science
Languages : en
Pages : 346
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Book Description
THE NATURE OF THE PROBLEM THIS book results from an attempt to explain on a basis of experimental physics some of the many strange phenomena produced by the natural movement of sand over the dry land of the Earth. The subject is but one aspect of a far wider problem which is still very imperfectly grasped-the transport of solid particles of any kind by fluids in general. Here the difficulty has been, and still is, that no one branch of science has attempted to deal with the problem as a whole, or to co-ordinate the vast amount of piecemeal work by students of different outlook in many unrelated fields. The carriage of silt by rivers has received a great deal of attention from engineers. But owing to the difficulties of direct measurement, to the expense and labour of conducting full-scale experiments, and to a failure to find agreement as to the basic quantities upon which a theoretical edifice may be built, the published results are far from satisfactory. Little has emerged except empirical formulae; and these are rarely capable of reliable application to conditions other than those under which they were evolved. The drifting of snow is of direct interest to transport authorities in many countries, to meteorologists engaged in the study of rainfall, to ski-runners and to mountaineers. Yet no means has been found whereby the precipitation can be gauged, or the rate of drift related to the strength of the wind.
Author: Ralph Alger Bagnold
Publisher:
ISBN:
Category : Ripple-marks
Languages : en
Pages : 265
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Book Description
Author: Ralph A. Bagnold
Publisher:
ISBN:
Category : Ripple-marks
Languages : en
Pages : 0
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Book Description
Author: Yaping Shao
Publisher: Springer Science & Business Media
ISBN: 1402088957
Category : Science
Languages : en
Pages : 459
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Book Description
Wind erosion occurs in many arid, semiarid and agricultural areas of the world. It is an environmental process in?uenced by geological and climatic variations as well as human activities. In general, wind erosion leads to land degradation in agricultural areas and has a negative impact on air quality. Dustemissiongeneratedbywinderosionisthelargestsourceofaerosolswhich directly or indirectly in?uence the atmospheric radiation balance and hence global climatic variations. Strong wind-erosion events, such as severe dust storms, may threaten human lives and cause substantial economic damage. The physics of wind erosion is complex, as it involves atmospheric, soil and land-surface processes. The research on wind erosion is multidisciplinary, covering meteorology, ?uid dynamics, soil physics, colloidal science, surface soil hydrology, ecology, etc. Several excellent books have already been written about the topic, for instance, by Bagnold (1941, The Physics of Blown Sand and Desert Dunes), Greeley and Iversen (1985, Wind as a Geological P- cess on Earth, Mars, Venus and Titan), Pye (1987, Aeolian Dust and Dust Deposits), Pye and Tsoar (1990, Aeolian Sand and Sand Dunes). However, considerable progress has been made in wind-erosion research in recent years and there is a need to systematically document this progress in a new book.
Author: R.A. Bagnold
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Xiaojing Zheng
Publisher: Springer Science & Business Media
ISBN: 3540882545
Category : Science
Languages : en
Pages : 322
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Book Description
Mechanics plays a fundamental role in aeolian processes and other environmental studies. This proposed book systematically presents the new progress in the research of aeolian processes, especially in the research on mechanism, theoretical modelling and computational simulation of aeolian processes from the viewpoint of mechanics. Nowadays, environmental and aeolian process related problems are attracting more and more attention. We hope this proposed book will provide scientists and graduate students in aeolian research and other environmental research some mechanical methods and principles and introduce aeolian related problems of environment to mathematical and mechanical scientists.
Author:
Publisher: Springer Science & Business Media
ISBN: 3540859101
Category : Science
Languages : en
Pages : 465
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Book Description
It is more than half a century since the publication of R. A. Bagnold’s classic book The physics of blown sand and desert dunes, and it is a tribute to the quality of Bagnold’s work that many of the fundamental principles which he developed - main valid today. His book continues to be essential reading for any serious s- dent of aeolian processes. However, the past two decades have seen an explosion in the scale of research dealing with aeolian transport processes, sediments, and landforms. Some of this work has been summarized in review papers and edited conference proceedings, but this book provides the rst attempt to review the whole eld of aeolian sand research. Inevitably, it has not been possible to cover all - pects in equal depth, and the balance of included material naturally re ects the - thors’ own interests to a signi cant degree. However, our aim has been to provide as broad a perspective as possible, and to provide an entry point to an extensive mul- disciplinary scienti c literature, some of which has not been given the attention it deserves in earlier textbooks and review papers. Many examples are drawn from existing published work, but the book also makes extensive use of our own research in the Middle East, Australia, Europe, and North America. The book has been written principally for use by advanced undergraduates, po- graduates, and more senior research workers in geomorphology and sedimentology.
Author: Ole E. Barndorff-Nielsen
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 206
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Book Description
Author: Ralph A. Bagnold
Publisher:
ISBN:
Category : Biography & Autobiography
Languages : en
Pages : 240
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Book Description
Sand, Wind, and War records the work, travels and adventures of one of the last of the great British explorers, a man who served in both world wars and carved out a special niche in science through his studies of desert sands. Ralph Alger Bagnold was born in 1896 into a military family and educated as an engineer. Posted to Egypt in 1926, he was one of a group of officers who adapted Model T Fords to desert travel and in 1932 made the first east-west crossing—6,000 miles—of the Libyan desert. Bagnold established such a name for himself that in World War II he was again posted to Egypt where he founded and trained the Long Range Desert Group that was to confound the German and Italian armies. Bagnold’s fascination with the desert included curiosity over the formation of dunes, and beginning in 1935 he conducted wind tunnel experiments with sand that led to the book The Physics of Blown Sand and Desert Dunes. Eventually, he was to see his findings called on by NASA to interpret data on the sands of Mars. He devoted subsequent research to particle flow in fluids, and also served as a consultant to Middle Eastern governments concerned with the interference of sand flow in oil drilling. Sand, Wind, and War is the life story of a man who not only helped shape events in one part of the world but also contributed to our understanding of it. It is a significant benchmark not only in the history of science, but also in the annals of adventure.
