Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau
文献类型:期刊论文
作者 | Meng, Qingkai4,5,6; Intrieri, Emanuele5; Raspini, Federico5; Peng, Ying3; Liu, Haocheng2; Casagli, Nicola1,5 |
刊名 | REMOTE SENSING OF ENVIRONMENT |
出版日期 | 2022-05-01 |
卷号 | 273页码:18 |
ISSN号 | 0034-4257 |
关键词 | Deformation characteristics Internal hydrothermal regime and structure Earthflow Interferometric synthetic aperture radar (InSAR) Qinghai-Tibet Plateau |
DOI | 10.1016/j.rse.2022.112987 |
英文摘要 | Under the influence of climate change, permafrost landforms are sensitive to seasonal heave and contraction, thus exacerbating surface instability and fostering landslides as a consequence. In the pastureland of Zhimei on the Qinghai-Tibet Plateau (QTP), a typical earthflow has drawn significant attention through social media. However, detailed knowledge of the deformation characteristics, internal hydrothermal regime, and structure is still scarce. In this study, we aim to enhance traditional satellite synthetic aperture radar interferometry to divide ground deformation into the seasonal oscillation and slope deformation components and identify the magnitude and spatial distribution of unstable slopes in frozen regions. Then, the use of unmanned aerial vehicles (UAVs) was combined with geophysical monitoring techniques to recognise the deformation dynamics from the pre- to post-failure stages. Sentinel-1 images, covering almost five years, highlighted that obvious creep behaviour dominated at the pre-failure stage, while a seasonal deformation pattern characterised by a piecewise distribution associated with the hydrothermal regime was observed at the post-failure stage. Fast retrogressive erosion on the head scarps at the post-failure stage was clearly identified by multidifferential digital surface models from the UAV observations. To better understand the internal structure, both electrical resistivity tomography and ground-penetrating radar were combined to determine the seasonal frozen thickness, underlying thawing materials, and vertical cracks, which controlled the kinematic evolution from the initial creep to the narrow and long oversaturated flow that represented the terminal portion of the landslide. Finally, by comparing in situ monitoring data with field investigations, the main driving factors controlling the movement mechanism are discussed. Our results highlight the specific kinematic behaviour of an earthflow and can provide a reference for slope destabilisation on the QTP under the influence of climate change. |
WOS关键词 | FREEZE-THAW CYCLES ; SAR INTERFEROMETRY ; PERIGLACIAL SLOPE ; CLIMATE-CHANGE ; PERMAFROST ; LANDSLIDE ; INSAR ; TIME ; FAILURE ; SCALE |
资助项目 | National Natural Science Foundation of China[41807290] ; Key Research Project of Qinghai Province[2019-ZJ-A10] ; Key Research Project of Qinghai Province[2019-0101-ZJC-0001] ; China Scholarship Council[CSC201808635039] |
WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE INC |
WOS记录号 | WOS:000805979000001 |
资助机构 | National Natural Science Foundation of China ; Key Research Project of Qinghai Province ; China Scholarship Council |
源URL | [http://ir.imde.ac.cn/handle/131551/56664] |
专题 | 中国科学院水利部成都山地灾害与环境研究所 |
通讯作者 | Meng, Qingkai |
作者单位 | 1.Natl Inst Oceanog & Appl Geophys OGS, I-34010 Trieste, Italy 2.Qinghai Univ, Sch Water Resources & Elect Power, Xining 810016, Peoples R China 3.Chengdu Univ Technol, Coll Nucl Technol & Automat Engn, Chengdu 610059, Peoples R China 4.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Peoples R China 5.Univ Florence, Earth Sci Dept, I-50121 Florence, Italy 6.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Meng, Qingkai,Intrieri, Emanuele,Raspini, Federico,et al. Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau[J]. REMOTE SENSING OF ENVIRONMENT,2022,273:18. |
APA | Meng, Qingkai,Intrieri, Emanuele,Raspini, Federico,Peng, Ying,Liu, Haocheng,&Casagli, Nicola.(2022).Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau.REMOTE SENSING OF ENVIRONMENT,273,18. |
MLA | Meng, Qingkai,et al."Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau".REMOTE SENSING OF ENVIRONMENT 273(2022):18. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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