Glaciers in the eastern Pamir have reportedly been gaining mass during recent decades, even though glaciers in most other regions in High Mountain Asia have been in recession. Questions still remain about whether the trend is strengthening or weakening, and how far the positive balances extend into the eastern Pamir. To address these gaps, we use three different digital elevation models to reconstruct glacier surface elevation changes over two periods (2000–09 and 2000–15/16). We characterize the eastern Pamir as a zone of transition from positive to negative mass balance with the boundary lying at the northern end of Kongur Tagh, and find that glaciers situated at higher elevations are those with the most positive balances. Most (67% of 55) glaciers displayed a net mass gain since the 21st century. This led to an increasing regional geodetic glacier mass balance from −0.06 ± 0.16 m w.e. a−1 in 2000–09 to 0.06 ± 0.04 m w.e. a−1 in 2000–15/16. Surge-type glaciers, which are prevalent in the eastern Pamir, showed fluctuations in mass balance on an individual scale during and after surges, but no statistical difference compared to non-surge-type glaciers when aggregated across the region.

中文翻译：

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检查东部帕米尔过渡带的大地冰川质量平衡

据报道，近几十年来，帕米尔东部的冰川质量不断增加，尽管亚洲高山其他大多数地区的冰川一直在衰退。关于这一趋势是加强还是减弱，以及正平衡延伸到帕米尔东部多远的问题仍然存在。为了解决这些差距，我们使用三种不同的数字高程模型来重建两个时期（2000-09 和 2000-15/16）的冰川表面高程变化。我们将帕米尔东部描述为从正向负质量平衡过渡的区域，边界位于 Kongur Tagh 的北端，并发现位于较高海拔的冰川是具有最正平衡的冰川。自 21 世纪以来，大多数（55 个冰川中的 67%）冰川质量净增加。-1在 2000-09 年到 0.06 ± 0.04 m 我们是-12000-15/16 年。在帕米尔东部普遍存在的浪涌型冰川在浪涌期间和之后显示出个体规模的质量平衡波动，但与整个地区的非浪涌型冰川相比没有统计学差异。