摘要：Glacier is an important natural resource on the earth surface which appears in the solid state of water. Glaciers are formed due to accumulation of ice above snow line under extreme cold climate where the average temperature is always below freezing point during the warmest month of the year. It grow by gradual transformation of snow into granular snow, then into firn or neve and finally into solid glacial ice. About 10 % of earth surface is now covered by glaciers which has the different type's i.e. continental glaciers, ice caps, highland glaciers, valley glaciers, transaction glaciers, piedmont glaciers etc. The estimated number of all types of glaciers all over the world ranges between 70,000 and 200, 000. The areas of accumulation of huge volume of ice are called 'snow fields' which generates of different dimension. [11] As far this characteristic, in this era glacier becomes a significant task of the study, because the human and environmental relationship is important issue in recent century.
