{"thcode":62,"term":{"code":"WC-678","name":"Ice","parent":"WC-674","scope":"Hydroform: Frozen form of water, which is less dense than liquid water; ice floats on the surface of liquid water, sometimes extending into deep water zones. ..."},"uf":[],"bt":[{"code":"WC-674","name":"Water Mass","parent":"WC-C012","scope":"Hydroform Class: The Water Mass Hydroform Class refers to a parcel of water with homogeneous properties (e.g., chemical, physical). ..."},{"code":"WC-C012","name":"Hydroform","parent":"WC-C001","scope":null},{"code":"WC-C001","name":"Water Column","parent":"root","scope":null},{"code":"root","name":"CMECS","parent":null,"scope":"Coastal and Marine Ecological Classification Standard: Category terms encompassing waters from the head of tide or inland incursion of ocean salinity to the splash zone of the coasts to the deepest portions of the oceans and the deep waters of the Great Lakes."}],"nt":[{"code":"WC-687","name":"Drift Ice","parent":"WC-678","scope":"Hydroform Type: Ice that floats freely on the sea surface."},{"code":"WC-688","name":"Fast Ice","parent":"WC-678","scope":"Hydroform Type: Ice that is attached to a land mass such as the coast or, in shallow water, the sea floor."},{"code":"WC-689","name":"Frazil or Grease Ice","parent":"WC-678","scope":"Hydroform Type: Ice formation that develops when super-cooled water is turbulently mixed, permitting development of small ice crystals which continually fragment and break up without forming ice cover. ..."},{"code":"WC-690","name":"Ice Field","parent":"WC-678","scope":"Hydroform Type: Expanse of ice greater in size than an ice floe (=10 kilometers in any dimension)."},{"code":"WC-691","name":"Ice Floe","parent":"WC-678","scope":"Hydroform Type: Large floating ice chunk less than 10 kilometers on its longest axis."},{"code":"WC-692","name":"Pack Ice","parent":"WC-678","scope":"Hydroform Type: Accumulation of drift ice into a large floating mass, often against a continental shoreline."},{"code":"WC-693","name":"Pancake Ice","parent":"WC-678","scope":"Hydroform Type: Thin plaques of compressed ice particles formed by wave action into plates several meters in diameter that float on the sea surface."},{"code":"WC-694","name":"Polnya","parent":"WC-678","scope":"Hydroform Type: An area of open, liquid seawater surrounded by ice."}],"rt":[]}