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GLACIAL RETREAT IN HIMALAYA USING INDIAN REMOTE SENSING SATELLITE DATA

机译:利用印度洋遥感卫星数据对喜马拉雅山进行冰川退缩

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摘要

Himalayas possess one of the largest resources of snow and ice, which act as a huge freshwater reservoir. Monitoring the glaciers is important to assess the overall reservoir health. In this investigation glacial retreat was estimated for 466 glaciers in Chenab, Parbati and Baspa basins from 1962. Expeditions to Chhota Shigri, Patsio and Samudra Tapu glaciers in Chenab basin, Parbati glacier in Parbati basin and Shaune Garang glacier in Baspa basin were organized to identify and map glacial terminus. The investigation has shown, an overall reduction in glacier area from 2077 sq km to 1628 sq km from 1962, an overall deglaciation of 21 percent. However, number of glaciers is increased due to fragmentation. Mean of glacial extent was reduced from 1.4 to 0.32 km~2 between 1962 and 2001. In addition, number of glaciers with higher areal extent is reduced and lower areal extent has been increased between the periods. Small glaciarates and ice fields have shown extensive deglaciation. For example, 127 glaciarates and ice fields less than 1 km~2 have shown retreat of 38 percent from 1962, possibly due to small response time. This means combination glacial fragmentation, higher retreat of small glaciers and climate change are influencing sustainability of Himalayan glaciers.
机译:喜马拉雅山拥有最大的雪和冰资源,可作为巨大的淡水库。监测冰川对评估储层总体健康状况很重要。在这项调查中,从1962年开始估计了Chenab,Parbati和Baspa盆地的466个冰川退缩。组织了Chenab盆地的Chhota Shigri,Patsio和Samudra Tapu冰川,Parbati盆地的Parbati冰川和Baspa盆地的Shaune Garang冰川探险。并绘制冰河终点。调查显示,冰川面积从1962年的2077平方公里减少到1628平方公里,整体冰消作用降低了21%。但是,由于破碎,冰川的数量增加了。在1962年至2001年之间,平均冰川度从1.4降低到0.32 km〜2。此外,在两个时期之间,冰川面积较高的冰川数量减少,冰川面积较低的冰川数量增加。小冰川和冰原已显示出广泛的冰消作用。例如,自1962年以来,有127个冰川岩和小于1 km〜2的冰原已经退缩了38%,这可能是由于响应时间短。这意味着冰川破碎化,小型冰川的高度退缩和气候变化的组合正在影响喜马拉雅冰川的可持续性。

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