气候变化领域集成服务门户(CCPortal): Hydrothermal combination and geometry control the spatial and temporal rhythm of glacier flow

CCPortal

DOI	10.1016/j.scitotenv.2020.144315
	Hydrothermal combination and geometry control the spatial and temporal rhythm of glacier flow
	Yan, Xingguo; Ma, Jinzhu; Ma, Xiaoyi; Chen, Peiyuan; Wang, Shijin; Wei, Yanqiang; Zhu, Guofeng; Zhang, Weitao
通讯作者	Ma, JZ (通讯作者)，Lanzhou Univ, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
卷号	760
英文摘要	The dynamic response of glacier to atmospheric change has varied both spatially and temporally. While some of this variability is likely related to regional climate signals, the geometry of this particular glacier also appears to be important. In this study, we investigated the hydrothermal conditions and geometric controls on the temporal and spatial evolution of Baishui River Glacier No.1's velocity from 2012 to 2019. To do this, we combined field investigations and remote sensing observations to measure the velocity of the glacier, and factors controlling this velocity. Annual changes showed that, from 2012 to 2019, the Baishui River Glacier No. 1 experienced continuous shrinkage, accompanied by decreasing ice velocities. Seasonal changes showed that the glacier velocity during the monsoon period was significantly higher than during the non-monsoon period. Spatially, the glacier's dynamic variability decreased toward its terminus, but increased toward the upper reaches of the glacier, along a longitudinal axis. We would suggest that the interannual velocity variation of Baishui River Glacier No.1 corresponded to thinning of the glacier, which in turn affected its gravitational force. Given that surface melt-induced basal lubrication, basal friction controlled by freezing rate, and dynamic thickening can alter seasonal patterns of movement, these variations may be important for understanding the seasonal evolution of this, and other glaciers. Our results further indicated that glacier width, slope, surface meltwater and crevasses were important constraints on any spatial movement patterns. (C) 2020 Elsevier B.V. All rights reserved.
关键词	MONSOONAL TEMPERATE GLACIERS MASS-BALANCE VELOCITY VARIATIONS CLIMATE-CHANGE ICE-VELOCITY ROCK GLACIER SHORT-TERM NO. 1 MOUNTAINS CHINA
英文关键词	Baishui River Glacier No.1; Glacier velocity; Hydrothermal conditions; Glacier geometry
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000607779400153
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254778
作者单位	[Yan, Xingguo; Ma, Jinzhu; Ma, Xiaoyi; Chen, Peiyuan] Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Yan, Xingguo; Wang, Shijin; Wei, Yanqiang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Yulong Snow Mt Glacier & Environm Observat & Res, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Zhu, Guofeng] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China; [Zhang, Weitao] Gansu Acad Ecoenvironm Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yan, Xingguo,Ma, Jinzhu,Ma, Xiaoyi,et al. Hydrothermal combination and geometry control the spatial and temporal rhythm of glacier flow[J]. 中国科学院西北生态环境资源研究院,2021,760.
APA	Yan, Xingguo.,Ma, Jinzhu.,Ma, Xiaoyi.,Chen, Peiyuan.,Wang, Shijin.,...&Zhang, Weitao.(2021).Hydrothermal combination and geometry control the spatial and temporal rhythm of glacier flow.SCIENCE OF THE TOTAL ENVIRONMENT,760.
MLA	Yan, Xingguo,et al."Hydrothermal combination and geometry control the spatial and temporal rhythm of glacier flow".SCIENCE OF THE TOTAL ENVIRONMENT 760(2021).