气候变化领域集成服务门户(CCPortal): Inversion of Glacier 3D Displacement from Sentinel-1 and Landsat 8 Images Based on Variance Component Estimation: A Case Study in Shishapangma Peak, Tibet, China

CCPortal

DOI	10.3390/rs15010004
	Inversion of Glacier 3D Displacement from Sentinel-1 and Landsat 8 Images Based on Variance Component Estimation: A Case Study in Shishapangma Peak, Tibet, China
	Yang, Chengsheng; Wei, Chunrui; Ding, Huilan; Wei, Yunjie; Zhu, Sainan; Li, Zufeng
发表日期	2023
EISSN	2072-4292
卷号	15 期号:1
英文摘要	Offset tracking technology is widely studied to evaluate glacier surface displacements. However, few studies have used a cross-platform to this end. In this study, two heterogeneous data sources, Sentinel-1 and Landsat 8, from January 2019 to January 2021, were used to estimate the offset, and then the optimal estimation of the 3D deformation rate of a Himalayan glacier was obtained based on the joint model of variance component estimation. The results show that the maximum deformation rates of the glacier in the east-west direction, north-south direction, and vertical direction are 85, 126, and 88 mm/day, respectively. The results of the joint model were compared and analyzed with the results of simultaneous optical image pixel offset tracking. The results showed that the accuracy of the joint solution model increased by 41% in the east-west direction and 36% in the south-north direction. The regional flow velocity of the moraine glacier after the joint solution was consistent with the vector boundary of the glacier cataloging data. The time-series results of the glacier displacement were calculated using more images. These results indicate that the joint solution model is feasible for calculating temporal glacier velocity. The model can improve the time resolution of the monitoring results and obtain further information on glacier characteristics. Our results show that the glacier velocity is affected by local terrain slope and temperature. However, there is no absolute positive correlation between glacier velocity and slope. This study provides a reference for the joint acquisition of large-scale three-dimensional displacement of glaciers using multi-source remote sensing data and provides support for the identification and early warning of glacier disasters.
关键词	Sentinel-1 Landsat 8 offset tracking variance component estimation three-dimensional glacier monitoring Shishapangma Peak central Himalayan range Tibet
英文关键词	SURFACE MOTION; TIME-SERIES
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000909302900001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283335
作者单位	Chang'an University; Ministry of Natural Resources of the People's Republic of China; Beijing University of Technology
推荐引用方式 GB/T 7714	Yang, Chengsheng,Wei, Chunrui,Ding, Huilan,et al. Inversion of Glacier 3D Displacement from Sentinel-1 and Landsat 8 Images Based on Variance Component Estimation: A Case Study in Shishapangma Peak, Tibet, China[J],2023,15(1).
APA	Yang, Chengsheng,Wei, Chunrui,Ding, Huilan,Wei, Yunjie,Zhu, Sainan,&Li, Zufeng.(2023).Inversion of Glacier 3D Displacement from Sentinel-1 and Landsat 8 Images Based on Variance Component Estimation: A Case Study in Shishapangma Peak, Tibet, China.REMOTE SENSING,15(1).
MLA	Yang, Chengsheng,et al."Inversion of Glacier 3D Displacement from Sentinel-1 and Landsat 8 Images Based on Variance Component Estimation: A Case Study in Shishapangma Peak, Tibet, China".REMOTE SENSING 15.1(2023).