气候变化领域集成服务门户(CCPortal): Rock glacier inventory of the western Nyainqentanglha Range, Tibetan Plateau, supported by InSAR time series and automated classification

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DOI	10.1002/ppp.2117
	Rock glacier inventory of the western Nyainqentanglha Range, Tibetan Plateau, supported by InSAR time series and automated classification
	Reinosch, Eike; Gerke, Markus; Riedel, Bjorn; Schwalb, Antje; Ye, Qinghua; Buckel, Johannes
通讯作者	Reinosch, E (通讯作者)
发表日期	2021
ISSN	1045-6740
EISSN	1099-1530
起始页码	657
结束页码	672
卷号	32 期号:4
英文摘要	The western Nyainqentanglha Range on the Tibetan Plateau reaches an elevation of 7,162 m and is characterized by an extensive periglacial environment under semi-arid climatic conditions. Rock glaciers play an important part of the water budget in high mountain areas and recent studies suggest that they may even act as climate-resistant water storages. In this study we present the first rock glacier inventory of this region containing 1,433 rock glaciers over an area of 4,622 km. To create the most reliable inventory we combine manually created rock glacier outlines with an automated classification approach. The manual outlines were generated based on surface elevation data, optical satellite imagery and a surface velocity estimation. This estimation was generated via InSAR time series analysis with Sentinel-1 data from 2016 to 2019. Our pixel-based automated classification was able to correctly identify 87.8% of all rock glaciers in the study area at a true positive rate of 69.5%. In total, 65.9% of rock glaciers are classified as transitional with surface velocities of 1-10 cm/yr. In total, 18.5% are classified as active with higher velocities of up to 87 cm/yr. The southern windward side of the mountain range contains more numerous and more active rock glaciers. We attribute this to higher moisture availability supplied by the Indian Monsoon.
关键词	NORTHERN TIEN-SHAN NAM CO BASIN REGIONAL INVENTORY DRY ANDES RADAR INTERFEROMETRY SURFACE DEFORMATION PERMAFROST CREEP CLIMATE-CHANGE MASS-BALANCE LAKE
英文关键词	rock glacier; inventory; InSAR; Tibetan Plateau; time series; Nyainqê ntanglha Range
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS记录号	WOS:000649668100001
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
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/260135
推荐引用方式 GB/T 7714	Reinosch, Eike,Gerke, Markus,Riedel, Bjorn,et al. Rock glacier inventory of the western Nyainqentanglha Range, Tibetan Plateau, supported by InSAR time series and automated classification[J]. 中国科学院青藏高原研究所,2021,32(4).
APA	Reinosch, Eike,Gerke, Markus,Riedel, Bjorn,Schwalb, Antje,Ye, Qinghua,&Buckel, Johannes.(2021).Rock glacier inventory of the western Nyainqentanglha Range, Tibetan Plateau, supported by InSAR time series and automated classification.PERMAFROST AND PERIGLACIAL PROCESSES,32(4).
MLA	Reinosch, Eike,et al."Rock glacier inventory of the western Nyainqentanglha Range, Tibetan Plateau, supported by InSAR time series and automated classification".PERMAFROST AND PERIGLACIAL PROCESSES 32.4(2021).