| 中天山平顶冰川物质交换特征：以格里戈里耶夫冰川为例 |
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| 作者姓名： | Mikh. VN |
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| 作者单位： | 苏联科学院地理研究所 |
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| 摘 要： |
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| 关 键 词： | 冰川 物质平衡 平顶冰川 |
The Peculiarities of Mass Exchange of the Flat-top Glaciers at the Central Tianshan |
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| Mikh.,VN.The Peculiarities of Mass Exchange of the Flat-top Glaciers at the Central Tianshan[J].Journal of Glaciology and Geocryology,1991,13(2):107-114. |
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| Authors: | Vladimir N Mikhalenko |
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| Institution: | Institute of Geography of the Academy of Sciences of the USSR |
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| Abstract: | Flat-top glaciers reflect main regional features of mass exchange. Their location at the upper level of the mountain chains within the reach of the precipitation from all directions, and absence of avalanche snow supply define that peculiarities. At the flat-top glaciers of Central Tianshan the summer maximum of solid precipitation (about 80% of the annual quantity) provides the constant large albedo at the surface of glaciers and leads to continuous increase of accumulation within the area above 4 500 m. The typical feature of such type of glaciers is that the runoff is not equal to the total amount of melting water due to infiltration-congelation.
The part of water remaining in the glacier's body as superimposed ice decreases during the ablation period from about 57% at the first part of July to 48% at the second part of July and to 11 % of the total amount of melting water at the first half of August. Some processes of mass balance were researched by determining all the components of mass balance during short intervals. Mass balance of Grigoriev glacier-one of the flat-top glaciers of Central Tianshan was in 1986-1987 +21.7 g/cm2 and in 1987-1988 -29.1 g/cm2. |
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| Keywords: | mass balance flat-top glacier |
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