Field Measurement of Aeolian Sand Flux over a Sand Dune Slope

This study conducted field observations in terms of the number of blown sand impacts and wind velocity for two hours on 21 February 2009 at an open ocean beach in Japan in order to investigate characteristics of the aeolian sand transport flux over a sand dune slope. The Charnock constant related to wind shear on the sand bed surface calculated from the wind velocity data on the slope had a larger value over a flat. Furthermore the aeolian flux on the slope tended to be larger than that on the flat. Knowledge of the Charnock constant and the aeolian flux on the flat and slope was obtained from the field measurements which will become a great help for further investigation of the aeolian sand transport mechanisms.