Ice sheets Nappes glacières

Creator:	tynee
Language pair:	English to French
Discipline:	-
Definition / notes:	An ice sheet is a mass of glacial ice more than 50,000 square kilometers (19,000 square miles). Ice sheets contain about 99% of the freshwater on Earth, and are sometimes called continental glaciers. As ice sheets extend to the coast and over the ocean, they become ice shelves. A mass of glacial ice covering less area than an ice sheet is called an ice cap. A series of connected ice caps is called an ice field. Making up ice fields, ice caps, and eventually ice sheets are individual glaciers. Today, there are only two ice sheets in the world: the Antarctic ice sheet and the Greenland ice sheet.
URL:	http://nationalgeographic.org/encyclopedia/ice-sheet/