(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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Freebase(0.00 / 0 votes)Rate this definition: Bootstrapping. Bootstrapping or booting refers to a group of metaphors which refer to a self-sustaining process that proceeds without external help. The phrase appears to have originated in the early 19th century United States, to mean an absurdly impossible action, an adynaton.