{"thcode":2,"term":{"code":1309,"name":"water sampling","parent":379,"scope":"Methods of collecting a representative part of a body of water for testing in controlled conditions."},"uf":[],"bt":[{"code":379,"name":"field sampling","parent":376,"scope":"Collecting pieces or specimens or making measurements or observations at determined intervals or areas.  Results may be used as representative of the whole research area or population."},{"code":376,"name":"field methods","parent":734,"scope":"Research procedures and instrumental means to measure, collect data and samples, and observe in the natural areas where the materials, phenomena, structures, or species being studied occur."},{"code":734,"name":"methods","parent":1,"scope":"Techniques, methods, procedures, or strategies for research, management, collection, or analysis of scientific information in USGS."},{"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":560,"name":"hydrology","parent":291,"scope":"Branch of earth science that deals with water as it occurs in the atmosphere, on the surface of the ground, and underground."},{"code":1298,"name":"water chemistry","parent":437,"scope":"Branch of chemistry that deals with the elements and compounds in water."}]}