The Physics of Blown Sand and Desert Dunes (Dover Earth Science)

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Choose your country's store to see books available for purchase. See if you have enough points for this item. Sign in. An expert treatise on the origin and evolution of dunes, this classic work was used by NASA in studying sand dunes on Mars and is appropriate for undergraduate and graduate students.

The first book to deal exclusively with the behavior of blown sand and related land forms, its accessible style makes it an enduring reference more than half a century after its initial publication. The author studied the sands of North Africa for many years before World War II and is recognized as a leading authority on the subject.

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His three-part treatment begins with his wind-tunnel experiments, which he conducted to investigate the mechanism of sand transport. First, an account of the observed movement of the individual grains, followed by a chapter on the ground wind and its dependence on the type of surface over which it blows, form a comprehensive view of the interaction between wind and sand.

Part Two considers small-scale surface phenomena, such as ripples and ridges, and the closely related subject of size-grading the grains. The third part uses the foregoing results to explain the growth and movement of dunes in general, and the peculiar characteristics of the two main dune types. A method of determining the internal structure of accumulated sand illuminates both the sand's carrying power for motor transport and its water-retention potential. A final chapter, derived from firsthand knowledge, examines the intriguing subject of "singing sand.

Lawrence Weinstein. Nikola Tesla.

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The Physics of Blown Sand and Desert Dunes Dover Earth Science

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Soil Mechanics. David Muir Wood. Igneous and Metamorphic Petrology. Myron G. Hydraulics of Open Channel Flow. Hubert Chanson. Physics for Animators.

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Ocean Wave Mechanics. Terrestrial Hydrometeorology. James Shuttleworth. Michael John Smith. The Solid Earth. The Periodic Kingdom. David Prandle. The Future of Fossil Fuels. Kenneth S. Martin Marriott. The Physics of Energy. Robert L. The internal structure shows a fascinating snapshot of the dune building and migration characteristics and presents the observer with a look back in time. Section 4 connects the internal structure to the environmental parameters and provides an internal record of major rainfall.

The arid landscape features several dune systems Fig. This research focusses on dunes in the Dumont Fig. Field locations within the Mojave desert: a dunes within the Mojave desert with inserts showing a satellite map of Eureka dunes and Dumont dunes, b north-facing leeward face of the Dumont Dune, c west-facing face of the Eureka Dune.

The Dumont dune field covers an area of approximately 20km 2 MacDonald near the southern tip of Death Valley.

1 Introduction

The core of the dune field consist of star dunes surrounded by smaller barchanoid and longitudinal dunes. The dune selected for this research is easy to approach with support vehicles and is near to the northwestern flank of the dune field. The m high dune, shown in Fig. Topography of the Dumont dune measured with a laser rangefinder revealing seasonal changes due to wind regime: a June 2 characterized by a steep leeward north-facing slope and a shallow south-facing windward slope, b September 18 characterized by a longer leeward north-facing slope and a flat south-facing windward slope, c March 24 characterized by a reversed crest due to a prolonged reversed wind direction with a short steep south-facing slope and a shallow north-facing slope.

The steep north-facing leeward slope forms when the sand grains blow over the crest and deposit by grainfall. The deposits of grainfall create well-mixed lamination structures that thin downslope McKee Grainflow produces cross-strata and inverse grading due to segregation and typically thickens downslope Hunter The south-facing side has firmer sand at a shallower slope.

On most occasions, sand ripples form on the surface of the windward face whereas no ripples are observed on the leeward face. Seasonal changes in wind direction resulted in changes to the surface features of the dune. For example on September 18, the brink of the dune was elongated producing a flat region that extended for 30m to the windward side of the crest.

During a visit six months later March 24 , the dune crest had reversed. Reversal of the crest was observed with a short 14 m steep slipface on the south-facing slope.

The Physics of Blown Sand and Desert Dunes (Dover Earth Science)