气候变化领域集成服务门户(CCPortal): Seasonal deformation monitoring over thermokarst landforms using terrestrial laser scanning in Northeastern Qinghai-Tibetan Plateau

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DOI	10.1016/j.jag.2021.102501
	Seasonal deformation monitoring over thermokarst landforms using terrestrial laser scanning in Northeastern Qinghai-Tibetan Plateau
	Zhong, Wen; Zhang, Tingjun; Chen, Jie; Shang, Jianguo; Wang, Shufa; Mu, Cuicui; Fan, Chengyan
通讯作者	Zhang, TJ (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	1569-8432
EISSN	1872-826X
卷号	103
英文摘要	Climate warming has accelerated permafrost degradation over the Qinghai-Tibet Plateau (QTP) over the past several decades. The development of thermokarst landforms is a key indicator of permafrost degradation, while it lacks quantified measurements and comprehensive research over the QTP. The aim of this study is to investigate the development of thermokarst terrains through repeated ground-based elevation observations by using terrestrial laser scanning (TLS) in the northern QTP from April 11, 2016 through June 16, 2018. TLS Time series analysis reveals that the margin of the thermokarst landforms undergoes significant ground subsidence, side materials collapse, and/or uplift and deposit, especially in the southeastern, northwestern part of thermokarst landforms during the middle through the late thaw season. The vertical deformation and headwall retreat of thermokarst landforms reached -3.364 m and 10.66 m from April 11, 2016 to June 16, 2018, respectively. We also generated high-resolution orthophotos based on aerial photos acquired by the built-in 4 K RGB (red, green, blue) camera of DJI Phantom 3 Professional unmanned aerial vehicle (UAV) in April and October of 2016. The UAV images confirmed the TLS observations during the same period and presented the severely deformed area. This study reveals that the seasonal vertical deformation and headwall retreat of the thermokarst landforms in the study site are consistent with seasonal ground temperature change during the observed period. Extreme precipitation event as a key factor triggered the severe deforming of the case study thermokarst. Ground ice, peat layer, and human activity also contributed to the thermokarst landforms formation. The results also illustrate that TLS is an effective method for studying thermokarst development quantitatively.
关键词	ACTIVE-LAYER THICKNESS HEIHE RIVER-BASIN EBOLING MOUNTAIN HERSCHEL ISLAND PERMAFROST THAW CARBON RELEASE CLIMATE INTERFEROMETRY ECOSYSTEMS SUBSIDENCE
英文关键词	Permafrost; Thermokarst; Surface deformation; Terrestrial laser scanning; Unmanned aerial vehicle; Qinghai-Tibetan Plateau
语种	英语
WOS研究方向	Remote Sensing
WOS类目	Remote Sensing
WOS记录号	WOS:000700545000002
来源期刊	INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
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/254613
作者单位	[Zhong, Wen; Zhang, Tingjun; Wang, Shufa; Mu, Cuicui; Fan, Chengyan] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China; [Zhong, Wen] Texas A&M Univ, Dept Comp Sci, Coll Sci & Engn, Corpus Christi, TX 78412 USA; [Chen, Jie] Chinese Acad Sci, Northwest Inst Eco Environm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibet Plateau, Lanzhou 730000, Peoples R China; [Shang, Jianguo] Key Lab Near Surface Detect Technol, Wuxi 214035, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Wen,Zhang, Tingjun,Chen, Jie,et al. Seasonal deformation monitoring over thermokarst landforms using terrestrial laser scanning in Northeastern Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,103.
APA	Zhong, Wen.,Zhang, Tingjun.,Chen, Jie.,Shang, Jianguo.,Wang, Shufa.,...&Fan, Chengyan.(2021).Seasonal deformation monitoring over thermokarst landforms using terrestrial laser scanning in Northeastern Qinghai-Tibetan Plateau.INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,103.
MLA	Zhong, Wen,et al."Seasonal deformation monitoring over thermokarst landforms using terrestrial laser scanning in Northeastern Qinghai-Tibetan Plateau".INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION 103(2021).