QQ客服 官方微博 反馈留言

	Long-term change in ice velocity of Urumqi Glacier No. 1, Tian Shan, China
	Wang, Puyu1; Li, Zhongqin1,2; Zhou, Ping1; Li, Huilin1; Yu, Guobin3; Xu, Chunhai1; Wang, Lin1
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2018
卷号	145页码:177-184
关键词	Ice velocity Glacier change Ice thickness Surface slope Urumqi Glacier No. 1 Tian Shan
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2017.10.008
通讯作者	Wang, Puyu(wangpuyu@lzb.ac.cn)
英文摘要	Glacier flow velocity of Urumqi Glacier No. 1 has been continuously measured at the end of every summer since 1980. The observation results show that the average surface velocity was 5.5 m a(-1), 4.6 m a(-1), 3.8 m a(-1), and 3.3 m a(-1) in 1980/1981, 1990/1991, 2000/2001, and 2010/2011, respectively. The annual average velocity was reduced by 1.3% a(-1) from 1980/1981 to 2011/2012. The climate change is the essential cause for long term velocity change because continuous mass loss or gain will result in ice thickness decrease or increase. A suddenly sharp change in the mass balance could lead to a short change in velocity. Long term change in the velocity can be analyzed by glacial dynamic model. Using the simplified equations, analysis of the surface velocity along the centerline shows that influence of the ice thickness change is most important and could be modeled well. The velocity is very sensitive to the surface slope change but the validity of its effect modeling is relatively low due to the large spatial variability of surface slope. Under the combination effect of decrease in both ice thickness and surface slope, the velocity of the West Branch has a relative large decrease. The calculated decrease in surface velocity along the centerline is 3.8 m a(-1) from 1981 to 2012, relatively close to the value of 3.6 m a(-1) from observation. Increase in surface slope of the East Branch has an offsetting effect on ice thickness decrease. To further analysis, besides more data, a better model is needed to describe physical and dynamic processes.
收录类别	SCI
WOS关键词	MASS-BALANCE ; CENTRAL-ASIA ; RADAR INTERFEROMETRY ; EASTERN TIANSHAN ; FLOW VELOCITY ; SURFACE ; IMAGES ; MOTION ; ANTARCTICA ; TOPOGRAPHY
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000415834800019
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557631
专题	寒区旱区环境与工程研究所
通讯作者	Wang, Puyu
作者单位	1.Chinese Acad Sci, State Key Lab Cryosphere Sci, Tianshan Glaciol Stn, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China 2.Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou, Gansu, Peoples R China 3.Geomat Ctr Gansu Prov, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Puyu,Li, Zhongqin,Zhou, Ping,et al. Long-term change in ice velocity of Urumqi Glacier No. 1, Tian Shan, China[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2018,145:177-184.
APA	Wang, Puyu.,Li, Zhongqin.,Zhou, Ping.,Li, Huilin.,Yu, Guobin.,...&Wang, Lin.(2018).Long-term change in ice velocity of Urumqi Glacier No. 1, Tian Shan, China.COLD REGIONS SCIENCE AND TECHNOLOGY,145,177-184.
MLA	Wang, Puyu,et al."Long-term change in ice velocity of Urumqi Glacier No. 1, Tian Shan, China".COLD REGIONS SCIENCE AND TECHNOLOGY 145(2018):177-184.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。