{"thcode":61,"term":{"code":138,"name":"island","parent":106,"scope":"a relatively small landmass surrounded on all sides by water."},"uf":[],"bt":[{"code":106,"name":"landform","parent":94,"scope":"a geomorphic feature recognized as distinct from the surrounding terrain."},{"code":94,"name":"feature type","parent":1,"scope":null},{"code":1,"name":"Marine Realms Information Bank (MRIB) keyword categories","parent":null,"scope":null}],"nt":[{"code":139,"name":"barrier island","parent":138,"scope":"an elongate island that is parallel to the shore and separated from the mainland by a bay or lagoon."},{"code":141,"name":"coral island","parent":138,"scope":"an island formed of coral reefs and detritus, followed by a change in relative sea level."},{"code":140,"name":"island chain","parent":138,"scope":"a string of geologically related islands."},{"code":142,"name":"volcanic island","parent":138,"scope":"an island formed by the emergence of a submarine volcano."}],"rt":[]}