Of the wind: aeolian processes include erosion, transport, and deposition, and work best with sparse, or absent vegetation. Baas (2007) Geomorph. 91, 3–4 describes aeolian sand transport as ‘a classic dissipative process with non-linear dynamics’. Aeolian landforms include desert zeugen and yardangs. See I. Livingstone, ed. (1998).