Glossary of Karst and Cave Terms
Based on "A Lexicon of Cave and Karst Terminology with Special to Environmental Karst Hydrology" EPA/600/R-02/003, 2002, EPA: Washington, DC., Speleogenesis Glossary includes 2699 cave & karst terms
uniformity coefficient
A numerical expression of the variety in particle sizes in mixed natural soils, defined as the ratio of the sieve size on which 40% (by weight) of the material is retained to the sieve size on which 90% of the material is retained [6].
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