Glacier shrinkages and climate conditions around Jichu Dramo Glacier in the Bhutan Himalayas from 1998 to 2003
Glacier shrinkages and climate conditions around Jichu Dramo Glacier in the Bhutan Himalayas from 1998 to 2003
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发表时间：
2006
影响因子：
1
通讯作者：
Nozomu Naito;Y. Ageta;S. Iwata;Y. Matsuda;R. Suzuki;H. Yabuki
中科院分区：
文献类型：
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作者：
Nozomu Naito;Y. Ageta;S. Iwata;Y. Matsuda;R. Suzuki;H. Yabuki
通过1998年、1999年和2003年秋季的日本-不丹联合实地活动，观测了吉丘德拉莫冰川和其他一些无碎屑冰川以及周围气候的变化。根据1998-1999年340多天的记录，吉丘德拉莫冰川周围的年降水量估计超过1 500毫米。该冰川位于受夏季季风影响很大的地区，据估计，其表面高度在1998-2003年期间以每年约2-3米的速度迅速下降。这一估计是不丹喜马拉雅山脉冰川表面下降速度的第一个例子。此外，其终端撤退率估计约为8 m a1在1998-2003年。自20世纪80年代中期以来，Jichu Dramo周围其他一些无碎屑冰川的终端退缩也通过与以前拍摄的照片进行比较得到了证实。进一步监测不丹冰川的显著萎缩，对于评估整个喜马拉雅山脉冰川萎缩的总体趋势至关重要。
Variations of Jichu Dramo Glacier and some other debris-free glaciers as well as the surrounding climate were observed through Japan-Bhutan joint field activities in the autumns of 1998, 1999, and 2003. The annual precipitation around the Jichu Dramo Glacier was estimated to be greater than 1500 mm, based on the record over 340 days in 1998-1999. The surface level of the glacier, which is located in an area strongly influenced by the summer monsoon, was estimated to be rapidly lowering at an approximate rate of 2-3 m a ' in 1998-2003. This estimate is the first example of surface lowering rates for glaciers in the Bhutan Himalayas. Further, its terminal retreat rate was estimated to be approximately 8m a 1 in 1998-2003. The terminal retreats of some other debris-free glaciers around Jichu Dramo since the mid-1980s have also been confirmed by comparing them with photos taken previously. Further monitoring of the remarkable glacier shrinkage in Bhutan is essential to assess the general trend of glacier shrinkage in the entire Himalayas.