Development and efficiency tests of a trap to measure Aeolian sand transport

Abstract

During our research on sand fluxes between beaches and dunes a trap for the measuring of aeolian transport rates on dune fields has been achieved. The trap, from now so - called “Att” (Aeolian transport trap), comes from deep modifications of an aeolian sand trap suggested by ARENS & VAN DER LEE (1995). The “Att” trap has been calibrated in the wind tunnel of the Department of Soil Management and Soil Care of the University of Ghent (Belgium): its efficiency has been positive, even if decreasing when wind speed approaches limit condition verifiable in nature and when sand grain size become smaller. For all the wind speeds, the amounts of sand retained by each tray making up the trap diminish exponentially from the lower tray to the upper one.