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2015年5月,新疆克孜勒苏柯尔克孜自治州阿克陶县公格尔九别峰北坡克拉牙依拉克冰川发生跃动,造成草场和部分房屋被冰体淹没,本文针对这一冰川跃动事件的发生过程进行研究.利用2013-2015年间ASTER立体像对数据监测了克拉牙依拉克冰川的冰川表面高程的变化,并利用2015年4月13日至2015年7月11日期间的Landsat OLI数据监测了冰川的表面运动速度变化.监测发现,克拉牙依拉克冰川从2015年4月13号开始活动强烈,表面运动速度呈加快趋势,2015年5月8-15日期间冰川表面运动速度达到最高水平,其最大运动速度在西支中部达到了(20.40±0.42)m·d~(-1),冰川跃动达到顶峰.冰川跃动“积蓄区”位于西支冰川平衡线以下区域,跃动向下游接收区输送冰体体积约为2.4×10~8m~3,大量冰体堆积在东西支汇合口地段(海拔3 100~3 500 m),造成了该处冰面隆起,其中最大隆起高度为(130.58±0.70)m.本文获得了西支冰川由静止期、跃动状态、恢复到稳定状态期间的冰面高程和表面运动速度变化,为本地区冰川跃动机理的研究奠定了基础.
In May 2015, the Kalaya Irac glacier on the north slope of Jiupeng Peak, Gonggaer, Aktau County, Kizilsu Kyrgyzstan Autonomous Prefecture, Xinjiang Province, caused the glacier to overwhelm the pasture and some houses. The occurrence of the events was studied.The changes of the glacier surface elevation of the Ilaq glacier in Craton were monitored by ASTER stereo pair data from 2013 to 2015 and Landsat OLI was used from April 13, 2015 to July 11, 2015 The data monitored changes in the glacier’s surface movement velocity and found that the Iracula Glacier in the craton had a strong activity since April 13, 2015. The surface movement velocity was accelerating. The glacier surface movement velocity reached between May 8 and May 15, 2015 And the maximum velocity reached 20.40 ± 0.42 m · d -1 in the central part of the western branch of the glacier, and the glacier peaked at its peak. The volume of ice body transported to the downstream receiving area was about 2.4 × 10 ~ 8m ~ 3. A large number of ice bodies were deposited in the section of Dongsheizi junction (elevation 3,100 ~ 3,500 m), causing the ice surface to bulge. The largest The height of the uplift is (130.58 ± 0.70) m The change of ice surface elevation and surface velocity during the period from rest, state of jerk and return to steady state in the western part of the glacier lays the foundation for the study on the mechanism of glacier jerk in this area.