气候变化领域集成服务门户(CCPortal): Seasonal Dynamics of a Temperate Tibetan Glacier Revealed by High-Resolution UAV Photogrammetry and In Situ Measurements

CCPortal

DOI	10.3390/rs12152389
	Seasonal Dynamics of a Temperate Tibetan Glacier Revealed by High-Resolution UAV Photogrammetry and In Situ Measurements
	Yang, Wei; Zhao, Chuanxi; Westoby, Matthew; Yao, Tandong; Wang, Yongjie; Pellicciotti, Francesca; Zhou, Jianmin; He, Zhen; Miles, Evan
通讯作者	Yang, W (通讯作者)
发表日期	2020
EISSN	2072-4292
卷号	12 期号:15
英文摘要	The seasonal dynamic changes of Tibetan glaciers have seen little prior investigation, despite the increase in geodetic studies of multi-year changes. This study compares seasonal glacier dynamics (cold and warm seasons) in the ablation zone of Parlung No. 4 Glacier, a temperate glacier in the monsoon-influenced southeastern Tibetan Plateau, by using repeat unpiloted aerial vehicle (UAV) surveys combined with Structure-from-Motion (SfM) photogrammetry and ground stake measurements. Our results showed that the surveyed ablation zone had a mean change of -2.7 m of ice surface elevation during the period of September 2018 to October 2019 but is characterized by significant seasonal cyclic variations with ice surface elevation lifting (+2.0 m) in the cold season (September 2018 to June 2019) but lowering (-4.7 m) in the warm season (June 2019 to October 2019). Over an annual timescale, surface lowering was greatly suppressed by the resupply of ice from the glacier's accumulation area-the annual emergence velocity compensates for about 55% of surface ablation in our study area. Cold season emergence velocities (3.0 +/- 1.2 m) were similar to 5-times larger than those observed in the warm season (0.6 +/- 1.0 m). Distinct spring precipitation patterns may contribute to these distinct seasonal signals. Such seasonal dynamic conditions are possibly critical for different glacier responses to climate change in this region of the Tibetan Plateau, and perhaps further afield.
关键词	DEBRIS-COVERED GLACIER MASS-BALANCE NEPAL HIMALAYA PLATEAU AREA ABLATION RANGE LAKES ALPS SHAN
英文关键词	UAV; PPK; glacier mass balance; glacier dynamics; southeastern Tibetan Plateau
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:000559027400001
来源期刊	REMOTE SENSING
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259985
推荐引用方式 GB/T 7714	Yang, Wei,Zhao, Chuanxi,Westoby, Matthew,et al. Seasonal Dynamics of a Temperate Tibetan Glacier Revealed by High-Resolution UAV Photogrammetry and In Situ Measurements[J]. 中国科学院青藏高原研究所,2020,12(15).
APA	Yang, Wei.,Zhao, Chuanxi.,Westoby, Matthew.,Yao, Tandong.,Wang, Yongjie.,...&Miles, Evan.(2020).Seasonal Dynamics of a Temperate Tibetan Glacier Revealed by High-Resolution UAV Photogrammetry and In Situ Measurements.REMOTE SENSING,12(15).
MLA	Yang, Wei,et al."Seasonal Dynamics of a Temperate Tibetan Glacier Revealed by High-Resolution UAV Photogrammetry and In Situ Measurements".REMOTE SENSING 12.15(2020).