ice shelf
Seaward margin of the Ekstrom Ice Shelf lying between Sorasen Ridge and Halvfarryggen Ridge, Antarctica.
ice shelf
ice formation
ice shelf, thick mass of floating ice that is attached to land, formed from and fed by tongues of glaciers extending outward from the land into sheltered waters. Where there are no strong currents, the ice becomes partly grounded on the sea bottom and attaches itself to rocks and islands. The shelf is pushed forward by glacial pressure until its forward growth is terminated by sea currents. Built up by accretions of snowfall, it remains...