Characteristics of mountain glacier surge hazard: learning from a surge event in NE Pamir, China

doi:10.1007/s11629-018-5282-x

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2019 > Vol16 No.7

	Characteristics of mountain glacier surge hazard: learning from a surge event in NE Pamir, China
	Yao, Xin; Iqbal, Javed; Li, Ling-jing; Zhou, Zheng-kai
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019
卷号	16 期号:7 页码:1515-1533
关键词	Glacier surges Moraine Glacier hazards Mountain glacier Glacier monitoring Offset-tracking SAR
ISSN号	1672-6316
DOI	10.1007/s11629-018-5282-x
文献子类	Article
英文摘要	Abnormal glacier movement is likely to result in canyon-type hazards chain, such as the barrier lake of Yarlung Zangbo Grand Canyon formed by glacier debris flow in October 2018 in China. Glacier hazard usually evolves from the glacier surge and may occur in a regular cycle. Understanding the characteristics and process of glacier surge is important for early hazard recognition and hazard assessment. Based on field investigations, remote sensing interpretations and SAR offset-tracking surveys, this study confirms a typical glacier surge in the northeast Pamir, and presents its characteristics and processes. Black ice mixed moraines choking uplift and overflowing lateral marine are the most important scenic characteristics, which were formed under the conditions of stagnant glacier downstream and abundant super-glacial moraine. Glacier movement event can be divided into a five-period cycle including quiescent, inoculation, initiation, fracture and decline. This surge event lasted for about 300 days, initiated in February 2015 developed extensive fracturing zone in spring and early summer at maximum velocity of 10 +/- 0.95 m/day, declined after August 2015 and recovered to quiescent status in October 2015 for the next inoculation. The average height of glacier receiving area increased by 20-40 m with 2.7-3.6x10(8) m(3) ice transferred from glacier reservoir, and this volume accumulation again require 50-100 years for glacier mass balance which gives approximately 100 years frequency of the glacier surge. Nevertheless, long-period increase of precipitation and temperature were favorable for the occurrence, hydrological instability is the direct triggering mechanism, and while the Glacier Lake Outburst Flood (GLOF) hazards are unlikely to occur with this surge.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000474574600003
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46529]
专题	Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.7
推荐引用方式 GB/T 7714	Yao, Xin,Iqbal, Javed,Li, Ling-jing,et al. Characteristics of mountain glacier surge hazard: learning from a surge event in NE Pamir, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(7):1515-1533.
APA	Yao, Xin,Iqbal, Javed,Li, Ling-jing,&Zhou, Zheng-kai.(2019).Characteristics of mountain glacier surge hazard: learning from a surge event in NE Pamir, China.JOURNAL OF MOUNTAIN SCIENCE,16(7),1515-1533.
MLA	Yao, Xin,et al."Characteristics of mountain glacier surge hazard: learning from a surge event in NE Pamir, China".JOURNAL OF MOUNTAIN SCIENCE 16.7(2019):1515-1533.