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冰川(Glacier,又称冰河、冰原、冰帽、冰盖、冰盾)是指由千万年积雪挤压而成的、形态如同江河川流般的冰块集合体。冰川分为两大类:受重力作用而移动的称为山谷冰川或谷冰河,受挤压作用而移动的则称为大陆冰川。我国西部的冰川多为山谷冰川,北极和南极的冰川多属大陆冰川。大陆冰川中,面积大于5万平方公里的称为冰盖、冰盾,规模小些的称作冰帽、冰原、冰河。北极的冰川主要集中在格陵兰(冰盖面积超过170万平方公里)、加拿大的努
Glacier (ice glacier, ice sheet, ice cap, ice cap, ice shield) is a collection of ice cubes extruded from thousands of years of snow in the form of rivers. The glaciers are divided into two categories: the valley glacier or valley glacier, which is moved by gravity and the continental glacier that is moved by the extrusion. Most glaciers in western China are valley glaciers, and glaciers in the Arctic and Antarctica are mostly continental glaciers. In the continental glaciers, an area of more than 50,000 square kilometers is called an ice cap, an ice shield, and a smaller scale called ice cap, ice sheet and ice glacier. Arctic glaciers are mainly concentrated in Greenland (ice cover an area of more than 1.7 million square kilometers), Canada’s efforts