气候变化领域集成服务门户(CCPortal): Spatio-Temporal Changes of Mass Balance in the Ablation Area of the Muz Taw Glacier, Sawir Mountains, from Multi-Temporal Terrestrial Geodetic Surveys

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DOI	10.3390/rs13081465
	Spatio-Temporal Changes of Mass Balance in the Ablation Area of the Muz Taw Glacier, Sawir Mountains, from Multi-Temporal Terrestrial Geodetic Surveys
	Xu, Chunhai; Li, Zhongqin; Wang, Feiteng; Mu, Jianxin
通讯作者	Xu, CH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Tien Shan Glaciol Stn, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China. ; Xu, CH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Natl Cryosphere Desert Data Ctr, Lanzhou 730000, Peoples R China.
发表日期	2021
EISSN	2072-4292
卷号	13 期号:8
英文摘要	The glaciers in the Sawir Mountains are an important freshwater resource, and glaciers have been experiencing a continuing retreat over the past few decades. However, studies on detailed glacier mass changes are currently sparse. Here, we present the high-precision evolution of annual surface elevation and geodetic mass changes in the ablation area of the Muz Taw Glacier (Sawir Mountains, China) over the latest three consecutive mass-balance years (2017-2020) based on multi-temporal terrestrial geodetic surveys. Our results revealed clearly surface lowering and negative geodetic mass changes, and the spatial changing patterns were generally similar for the three periods with the most negative surface lowering (approximately -5.0 to -4.0 m a(-1)) around the glacier terminus. The gradient of altitudinal elevation changes was commonly steep at the low elevations and gentle in the upper-elevation parts, and reduced surface lowering was observed at the glacier terminus. Resulting emergence velocities ranged from 0.11 to 0.86 m a(-1) with pronounced spatial variability, which was mainly controlled by surface slope, ice thickness, and the movement of tributary glaciers. Meanwhile, emergence velocities slightly compensated the surface ablation at the ablation area with a proportion of 14.9%, and dynamic thickening had small contributions to glacier surface evolution. Limited annual precipitation and glacier accumulation may result in these weak contributions. Higher-resolution surveys at the seasonal and monthly scales are required to get insight into the mass balance processes and their mechanism.
关键词	TIEN-SHAN LIDAR MEASUREMENT NO. 1 DYNAMICS UAV VOLUME ALPS HINTEREISFERNER PHOTOGRAMMETRY PROPAGATION
英文关键词	glacier mass balance; glacier dynamics; terrestrial laser scanning; mountain glacier; Sawir Mountains
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000644665900001
来源期刊	REMOTE SENSING
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/253723
作者单位	[Xu, Chunhai; Li, Zhongqin; Wang, Feiteng; Mu, Jianxin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Tien Shan Glaciol Stn, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Xu, Chunhai] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Natl Cryosphere Desert Data Ctr, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xu, Chunhai,Li, Zhongqin,Wang, Feiteng,et al. Spatio-Temporal Changes of Mass Balance in the Ablation Area of the Muz Taw Glacier, Sawir Mountains, from Multi-Temporal Terrestrial Geodetic Surveys[J]. 中国科学院西北生态环境资源研究院,2021,13(8).
APA	Xu, Chunhai,Li, Zhongqin,Wang, Feiteng,&Mu, Jianxin.(2021).Spatio-Temporal Changes of Mass Balance in the Ablation Area of the Muz Taw Glacier, Sawir Mountains, from Multi-Temporal Terrestrial Geodetic Surveys.REMOTE SENSING,13(8).
MLA	Xu, Chunhai,et al."Spatio-Temporal Changes of Mass Balance in the Ablation Area of the Muz Taw Glacier, Sawir Mountains, from Multi-Temporal Terrestrial Geodetic Surveys".REMOTE SENSING 13.8(2021).