Weather Dictionary / Glossary of Terms

Porosity


   Weather TermDescription / Definition
   Porosity In hydrologic terms,
(1) The ratio of pore volume to total volume of the formation. Sandy soils have large pores and a higher porosity than clays and other fine-grained soils.
(2) An index of the void characteristics of a soil or stream as pertaining to percolation; degree of previousness.


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Data courtesy of NOAA - National Oceanic and Atmospheric Administration