Experimental investigation of the velocity of a sand cloud blowing over a sandy surface
The AA. report the detailed results of the velocity of a sand blowing over a sandy surface measured by PDA (particle dynamic analyser) which employs a phase Doppler technique in a wind tunnel. The primary objectives are to define the velocity
distribution of particles in a blowing sand cloud and variation of the mean velocity of the blowing sand cloud with height. An attempt is made to discuss the particle turbulence, the velocity fluctuation of particles passing a fixed point, in a blowing sand
Velocity profile of a sand cloud blowing over a gravel surface
The primary objective of the study reported here is to investigate the vertical variation of the mean velocity of a sand cloud blowing over a gravel surface. Taking advantage of the particle dynamic analyzer (PDA) rapid acquisition of velocities
of a large number of sand particles, an attempt is made to discuss the particle turbulence within a blowing sand cloud.
Drought, wind, and blowing dust on the Southern High Plains of the United States
The purpose of this paper is to use the meteorological record for Lubbock, Texas to investigate the roles of drought and wind speed on the amount of blowing dust on the Southern High Plains.
Magnitude and frequency of blowing dust on the Southern High Plains of the United States
The purpose of this study is to gain an appreciation of the relative roles of large, moderate, and small blowing-dust events on the Southern High Plains. In the absence of detailed quantitative data on these events during the 1930s, the AA. focus
Environmental controls on blowing dust direction at Lubbock, Texas, U.S.A.
The directional variability of blowing dust estimated with the sand rose technique, using wind speed and direction data, suggest that dust transport occurs from all directions. An empirical method of determining directional variability using
meteorological data on visibility reductions due to blowing dust, however, indicates that most dust comes from the west and south-west. In addition to wind speed and direction, other environmental factors must be considered in explaining the spatial pattern
Here an attempt has been made to explore this dynamic aeolian process using a new method for monitoring the diurnal pattern of blowing sand. This technique involves detecting blowing sand with a fast responding piezoelectric saltation sensor
Temporal and spatial aspects of blowing dust in the Mojave and Colorado deserts of southern California, 1973-1994
seasonal distribution of dust events, but has more summer events, usually associated with convective thunderstorms. Frequencies of blowing dust have weak, but statistically significant, correlations with mean annual and antecedent precipitation, suggesting
Results of field work studying the mecanism of movement and advance for longitudinal dunes shows that wind that encounters longitudinal dunes obliquely is deflected on the lee flank and blows along that flank parallel to the crest line.
Another installment in a series of articles on urban and economic development at Noril'sk focuses on the experiences in urban planning and design. Special attention is devoted to efforts to defend the city from strong winds and blowing snow through
Natron lakes cover an about 10 km area in the western part of the structural valley of the Danube on the Danube-Tisza Interfluve. Blow-out depressions form their floors. Their isolation is a consequence of human intervention into landscape
The chinook is possibly the best example of warm mesoscale mountain winds that blow in regions where long mountain chains more or less lie at right angles to the prevailing wind. Calgary experiences approximately 50 chinook days between November
The aim of this research is to report the first direct measurements of dry blow process of wind erosion on bare blanket peat in an upland environment. Data presented in this paper were collected as part of a longer-term project investigating wind