{"thcode":2,"term":{"code":814,"name":"ocean currents","parent":816,"scope":"Recurrent strong flows of seawater generated by wind or variations in water density along a given path."},"uf":[{"name":"ocean current measurement","usewith":{"code":375,"name":"field inventory and monitoring","parent":376,"scope":"Repeated observation or sampling at a site, on a scheduled or event basis, for study and analysis.  In general, this category excludes sampling programs in which materials are obtained in the field and brought back to a laboratory for study and analysis."}}],"bt":[{"code":816,"name":"ocean processes","parent":101,"scope":"Recurrent natural changes that are physical, biological, or chemical, actively affecting the seas and oceans."},{"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":731,"name":"meteorology","parent":68,"scope":"Branch of science dealing with the short-term variations of atmospheric conditions including wind, precipitation, temperature, humidity, cloud cover, and air pressure."},{"code":812,"name":"ocean circulation","parent":816,"scope":"Movement of large masses of water within an ocean."},{"code":818,"name":"ocean sciences","parent":291,"scope":"Sciences involved in the study of geological, biological, chemical, and physical characteristics and processes of the oceans."},{"code":1168,"name":"tides (oceanic)","parent":816,"scope":"The periodic rise and fall of the level of the sea due to the gravitational attraction of the moon and sun. Occurs twice each day."}]}