(1993) restated this same range of values for residual saturation in both the vadose and saturated zones. Wilson et al. (1990) observed residual saturations in saturated unconsolidated sands to range from 0.14 to 0.30 (14% to 30%) and a lower value, 0.09 (9%), for one unsaturated (vadose zone) sand.
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Diagonal sequence walks and runs (aka trots) are most frequently used by sprawling tetrapods such as salamanders and lizards, due to the lateral oscillations of their bodies during movement. Bipeds are a unique case, and most bipeds will display only three gaits-walking, running, and hopping-during natural locomotion.