The grain-bed impact process in aeolian saltation

摘要: We report the results of impact experiments in which high velocity steel spheres (BBs) were directed against a loose bed similar particles. The purpose these is to shed some light on collision processes occur when saltating sand grains driven by wind strike bed. scattered particles fall into two categories: single energy rebound scatters quasi-specularly, and number low recoils. identified with “successive saltation” particle Rumpel, recoils are interpreted as creeping, or reptating These observations provide information “splash function” Ungar Haff, describes response grain plays central role theory saltation.