By Kenneth Pye
It is greater than part a century because the booklet of R. A. Bagnold’s vintage e-book The physics of blown sand and wilderness dunes, and it's a tribute to the standard of Bagnold’s paintings that some of the primary ideas which he built - major legitimate at the present time. His booklet is still crucial interpreting for any critical s- dent of aeolian methods. in spite of the fact that, the prior 20 years have obvious an explosion within the scale of study facing aeolian shipping tactics, sediments, and landforms. a few of this paintings has been summarized in assessment papers and edited convention lawsuits, yet this publication offers the rst try to evaluation the complete eld of aeolian sand examine. necessarily, it has now not been attainable to hide all - pects in equivalent intensity, and the stability of incorporated fabric certainly re ects the - thors’ personal pursuits to a signi cant measure. notwithstanding, our target has been to supply as vast a standpoint as attainable, and to supply an access aspect to an intensive mul- disciplinary scienti c literature, a few of which has now not been given the eye it merits in past textbooks and overview papers. Many examples are drawn from latest released paintings, however the publication additionally makes huge use of our personal study within the heart East, Australia, Europe, and North the USA. The e-book has been written mostly to be used by means of complicated undergraduates, po- graduates, and extra senior study employees in geomorphology and sedimentology.
Read Online or Download Aeolian Sand and Sand Dunes PDF
Similar hydrology books
This publication fills a niche within the present literature by means of bringing water assets and the forest-water relation right into a unmarried quantity. The textual content commonly discusses universal concerns on water source and forest-water relation and serves as an advent to woodland hydrology. woodland Hydrology: An advent to Water and Forests covers concerns on water, forests, the water-forest relation, watershed examine, and hydrologic measurements, and gives state of the art wisdom at the influence of forests to the hydrologic atmosphere.
Delivering an advent to the crucially vital subject of groundwater, this article covers all significant fields of hydrogeology and comprises outlines of the prevalence of groundwater in a number of rock kinds, the stream and garage of groundwater, the formula of groundwater balances, the improvement of groundwater chemistry, in addition to the sensible program of hydrogeology for groundwater improvement.
This new ebook used to be written to supply scholars and operators with examples of various diversified difficulties that may be encountered either at the task and for Grades 1 & 2 certification tests. This publication is split into 4 major elements: a assessment of vital numbers and rounding; chapters on math via perform assessments; and appendices.
This e-book describes crucial equipment for comparing groundwater vulnerability to infection. It analyzes the chemical and dynamic homes of groundwater intimately and proposes using cartography to explain underground hydrodynamic habit and scale class. Supplemented by way of colour illustrations, figures and tables, in addition to a accomplished bibliography for additional learn on particular concerns, the booklet experiences groundwater habit in numerous different types of plains, reminiscent of alluvial, deltaic, piedmont, intermountain and marine, and indicates a technique for hydrogeological reviews.
Additional resources for Aeolian Sand and Sand Dunes
3 Dust Devils The daytime near-surface air instability characteristic of bare ground in deserts leads to the development of miniature whirlwinds known as dust devils (Fig. 7). This type of whirlwind generally raises a column of dust 1–300 m in diameter up to heights of 3–300 m, but some cases of gigantic dust devils attaining heights of up to 4000 m have been reported (Jutson 1920, Sinclair 1964). Dust devils develop over reasonably level ground when there is strong thermal convection through the superadiabatic layer near the ground.
1984). The sand deserts can be divided into two main types, hot subtropical and cold middle latitude deserts. The former include the Sahara, Arabia, Namib and Kalahari, Thar and Rajasthan, Australia, Iran, Peru and southwestern North America. The climate of these deserts is mild to warm in winter and hot to very hot in summer. The middle latitude deserts are found mainly in Central Asia and are cold in winter but warm to hot in summer. The wind climate of the Sahara desert, which provides a typical example of a hot subtropical desert, is dominated by the existence of a high-pressure cell across the region (Fig.
South of the area affected by the westerlies and the polar front, the winter period (October to April) is characterized by thermal stability and persistent northerly to north-easterly winds known in the southern Sahara as the harmattan. Surface wind direction frequencies in Khartoum and in Kano, Nigeria, show persistent northerly winds between November and March (Sutton 1931, Samways 1976). Thermal turbulence provoked by high near-ground temperatures during this dry period in the west-southern Sahara and the Sudanese Sahel boosts the velocity of these winds above the threshold for dust erosion, forming the harmattan haze (Samways 1976, Adetunji et al.
Aeolian Sand and Sand Dunes by Kenneth Pye