气候变化领域集成服务门户(CCPortal): Surface Velocity Analysis of Surge Region of Karayaylak Glacier from 2014 to 2020 in the Pamir Plateau

CCPortal

DOI	10.3390/rs13040774
	Surface Velocity Analysis of Surge Region of Karayaylak Glacier from 2014 to 2020 in the Pamir Plateau
	Peng, Yanfei; Li, Zhongqin; Xu, Chunhai; Zhang, Hui; Han, Weixiao
通讯作者	Li, ZQ (通讯作者)，Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China. ; Li, ZQ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci Tien Shan Glaciol Stn, Lanzhou 730000, Peoples R China.
发表日期	2021
EISSN	2072-4292
卷号	13 期号:4
英文摘要	The west branch of Karayaylak Glacier (eastern Pamir Plateau) surged in May 2015, significantly impacting on local socio-economic development. This event was also of great significance for studies of surging glaciers. Using Sentinel-1 imagery analyzed by offset tracking, based on normalized cross-correlation (NCC), and with the support of the Google Earth Engine (GEE) platform, we quantified the ice surface velocity of the west branch and terminus of Karayaylak Glacier from 13 October 2014 to 17 October 2020. Sentinel-1 images were acquired at intervals of 12 or 24 days. We also used a three-dimensional (3-D) laser scanner to measure the velocity of 3 ablation stakes and 56 feature points in the study region from 15 August to 6 October 2015, for the purpose of accuracy assessment. We set up an automatic meteorological station to record the air temperature in the same period and combined this with data from Tashkurgan meteorological station from 1957 to 2015. Analysis of this dataset provided insights into the glacier surge mechanism, with the following conclusions. (1) Surface velocity of the west branch and terminus of Karayaylak Glacier increased sharply after October 2014. The velocity then dropped significantly in the two months after the surge, and stayed at low values for nearly a year. After 2017, the velocity was slightly higher than in the previous period. (2) The surge event occurred from 11 April to 17 May 2015; the average surface velocity in this phase attained 2395 m a(-1) with a maximum velocity of 4265 m a(-1) at the west branch terminus. (3) From 2017 to 2020, the velocity showed periodic annual changes. (4) Based on the meteorological data analysis, we conclude that this surge resulted from the interaction between thermal and hydrological control mechanisms. Simultaneously, we demonstrate the high potential of the GEE platform and Sentinel-1 data to extract glacier surface velocity.
关键词	DEBRIS-COVERED GLACIERS EASTERN PAMIR RADAR INTERFEROMETRY ALPINE GLACIER OPTICAL-DATA MASS CHANGES SNOW DEPTH WATER-FLOW SAR KARAKORAM
英文关键词	Karayaylak glacier; surge glacier; glacier surface velocity; Google Earth Engine; Sentinel-1; offset tracking
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:000624449700001
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/253931
作者单位	[Peng, Yanfei; Li, Zhongqin] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China; [Li, Zhongqin; Xu, Chunhai; Zhang, Hui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci Tien Shan Glaciol Stn, Lanzhou 730000, Peoples R China; [Xu, Chunhai] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Natl Cryosphere Desert Ctr, Lanzhou 730000, Peoples R China; [Han, Weixiao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing Gansu Prov Heihe Remote Se, Lanzhou 730000, Peoples R China; [Han, Weixiao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Peng, Yanfei,Li, Zhongqin,Xu, Chunhai,et al. Surface Velocity Analysis of Surge Region of Karayaylak Glacier from 2014 to 2020 in the Pamir Plateau[J]. 中国科学院西北生态环境资源研究院,2021,13(4).
APA	Peng, Yanfei,Li, Zhongqin,Xu, Chunhai,Zhang, Hui,&Han, Weixiao.(2021).Surface Velocity Analysis of Surge Region of Karayaylak Glacier from 2014 to 2020 in the Pamir Plateau.REMOTE SENSING,13(4).
MLA	Peng, Yanfei,et al."Surface Velocity Analysis of Surge Region of Karayaylak Glacier from 2014 to 2020 in the Pamir Plateau".REMOTE SENSING 13.4(2021).