{"thcode":2,"term":{"code":1365,"name":"percolation","parent":1667,"scope":"The movement of water through fractures or interstices of a rock or soil."},"uf":[{"name":"infiltration (water)","usewith":false}],"bt":[{"code":1667,"name":"hydrologic processes","parent":101,"scope":null},{"code":101,"name":"biological and physical processes","parent":1174,"scope":"All continuing activities, functions, and phenomena associated with organisms and non-living matter."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[],"rt":[{"code":1368,"name":"permeability","parent":1367,"scope":"The ability of fluids to pass through an earth material, typically depending on the connectedness of pore space in the material."}]}