{"thcode":2,"term":{"code":822,"name":"ocean waves","parent":816,"scope":"A periodic movement of seawater caused by wind, tide, and currents."},"uf":[{"name":"ocean wave 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."}},{"name":"water waves","usewith":false}],"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":[{"code":1195,"name":"tsunamis","parent":822,"scope":"Sea waves generated by submarine earthquakes, volcanic eruptions, or landslides, which are generally imperceptible in deep water but may be very destructive when striking the shoreline."}],"rt":[{"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."}]}