Blow sand refers to loose, wind-blown sand that accumulates in deserts or along coastlines, forming dunes or other aeolian landforms. Blow sand is significant in the study of desertification, dune dynamics, and the effects of wind on sediment transport. It also plays a role in shaping the landscapes of arid regions.
Reference: Cooke, R. U., Warren, A., & Goudie, A. (1993). Desert Geomorphology. UCL Press.