Time series: what is the snow line: 2011 -
21 < P> in sunny day of summer, the residents of the tianshan mountain and qilian mountain, can clearly see a black and white line across the hillside.
Line is more than the silver flashes of ice and snow world.
This line is called the snowline.
Exact definition of the word, snow line refers to a certain altitude;
At this altitude, annual land just after the melting of snow.
< / P> < P> the snowline position of a place is not fixed.
Seasonal change can cause the rise and fall of snow line, this kind of temporary phenomenon known as seasonal snow line.
Snow line position is stable in the summer, every year back to a fixed height, for this reason, the snow line height are most thermidor in summer.
< / P> < P> in the world, the snowline is cut from the equator to the poles.
North slope of mount Everest snow line 6000 meters high, and in the north and south poles, snow line is lower on the horizon.
Snow line is an important symbol on glaciology, it control development and distribution of the glacier.
< / P> < P> only mountain height more than the area of snow line, every year will have extra snow accumulates.
Age, to become permanent snow and glacial growth areas.
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