{"thcode":61,"term":{"code":483,"name":"underwater vehicle observations","parent":400,"scope":"direct observation of underwater features using submersibles (manned or remotely operated)."},"uf":[],"bt":[{"code":400,"name":"field observation","parent":398,"scope":"scientific investigation of physical or biological features and processes in a natural setting."},{"code":398,"name":"research method","parent":1,"scope":null},{"code":1,"name":"Marine Realms Information Bank (MRIB) keyword categories","parent":null,"scope":null}],"nt":[],"rt":[]}