Several saltation models including Bagnold model,Sørensen model,and Pähtz-Kok-Herrmann(PKH)model have been summarized by analyzing the development trend,model ideas,and problems.In con-trast with Bagnold model,the Owen Type of saltation models just like Sørensen model and PKH model involve the parameterized solutions of wind profile equations over aeolian saltation layer and the parameterized motions of saltating particles.The Sørensen model is based on the parametric solution of the leapfrog trajectory equations reflecting the gas-solid coupling process as the main modeling strategy.More specifically and deeply,PKH mod-el parameterizes the force and work rate balances;and the solution of wind profile equations;accordingly,pro-viding new insights into apparent roughness,grain shear stress profile and impact threshold.The analytical salta-tion models can be improved by more accurate observations,reevaluation of saltation flux peaks,and parameter-ization of the effect of multi-scale wind on saltation flux.
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