THE PREDICTION OF DUST EROSION BY WIND - AN INTERACTIVE MODEL

We have devised a partial differential equation for the prediction of dust concentration in a thin layer near the ground. In this equation, erosion (detachment), transport, deposition and source are parameteris ed in terms of known quantities. The interaction between a wind predic tion model in the boundary layer and this equation affects the evoluti on of the dust concentration at the top of the surface layer. Numerica l integrations are carried out for various values of source strength, ambient wind and particle size. Comparison with available data shows t hat the results appear very reasonable and that the model should be su bjected to further development and testing.