polynya, regional clearing

floe fieldice icefield icefloe pedregal sheet ice field rink arctic background blue broken change christmas climate clime cold color decoration embacle environment flake frost frozen glacial glacier global icicle icy lake melting meltwater morass north pack polar pole puddle reflection season slush snow snowfall snowflake swamp texture toros weather wintertime polynya regional clearing glaciological studies: clearing extensive sagebrush annual underwater ice ocean 86-88 degrees latitude