Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau
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 att...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/56616 2023-05-15T17:57:42+02:00 Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau Meng, Qingkai Intrieri, Emanuele Raspini, Federico Peng, Ying Liu, Haocheng Casagli, Nicola 2022-05-01 http://ir.imde.ac.cn/handle/131551/56616 https://doi.org/10.1016/j.rse.2022.112987 英语 eng ELSEVIER SCIENCE INC REMOTE SENSING OF ENVIRONMENT http://ir.imde.ac.cn/handle/131551/56616 doi:10.1016/j.rse.2022.112987 Deformation characteristics Internal hydrothermal regime and structure Earthflow Interferometric synthetic aperture radar (InSAR) Qinghai-Tibet Plateau FREEZE-THAW CYCLES SAR INTERFEROMETRY PERIGLACIAL SLOPE CLIMATE-CHANGE PERMAFROST LANDSLIDE INSAR TIME FAILURE SCALE Environmental Sciences & Ecology Remote Sensing Imaging Science & Photographic Technology Environmental Sciences 期刊论文 2022 ftchinacadscimhe https://doi.org/10.1016/j.rse.2022.112987 2022-12-19T18:29:45Z 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 ... Report permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Remote Sensing of Environment 273 112987 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Deformation characteristics Internal hydrothermal regime and structure Earthflow Interferometric synthetic aperture radar (InSAR) Qinghai-Tibet Plateau FREEZE-THAW CYCLES SAR INTERFEROMETRY PERIGLACIAL SLOPE CLIMATE-CHANGE PERMAFROST LANDSLIDE INSAR TIME FAILURE SCALE Environmental Sciences & Ecology Remote Sensing Imaging Science & Photographic Technology Environmental Sciences |
spellingShingle |
Deformation characteristics Internal hydrothermal regime and structure Earthflow Interferometric synthetic aperture radar (InSAR) Qinghai-Tibet Plateau FREEZE-THAW CYCLES SAR INTERFEROMETRY PERIGLACIAL SLOPE CLIMATE-CHANGE PERMAFROST LANDSLIDE INSAR TIME FAILURE SCALE Environmental Sciences & Ecology Remote Sensing Imaging Science & Photographic Technology Environmental Sciences Meng, Qingkai Intrieri, Emanuele Raspini, Federico Peng, Ying Liu, Haocheng Casagli, Nicola Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau |
topic_facet |
Deformation characteristics Internal hydrothermal regime and structure Earthflow Interferometric synthetic aperture radar (InSAR) Qinghai-Tibet Plateau FREEZE-THAW CYCLES SAR INTERFEROMETRY PERIGLACIAL SLOPE CLIMATE-CHANGE PERMAFROST LANDSLIDE INSAR TIME FAILURE SCALE Environmental Sciences & Ecology Remote Sensing Imaging Science & Photographic Technology Environmental Sciences |
description |
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 ... |
format |
Report |
author |
Meng, Qingkai Intrieri, Emanuele Raspini, Federico Peng, Ying Liu, Haocheng Casagli, Nicola |
author_facet |
Meng, Qingkai Intrieri, Emanuele Raspini, Federico Peng, Ying Liu, Haocheng Casagli, Nicola |
author_sort |
Meng, Qingkai |
title |
Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau |
title_short |
Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau |
title_full |
Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau |
title_fullStr |
Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau |
title_full_unstemmed |
Satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in Zhimei, Yushu, Qinghai-Tibet Plateau |
title_sort |
satellite-based interferometric monitoring of deformation characteristics and their relationship with internal hydrothermal structures of an earthflow in zhimei, yushu, qinghai-tibet plateau |
publisher |
ELSEVIER SCIENCE INC |
publishDate |
2022 |
url |
http://ir.imde.ac.cn/handle/131551/56616 https://doi.org/10.1016/j.rse.2022.112987 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
REMOTE SENSING OF ENVIRONMENT http://ir.imde.ac.cn/handle/131551/56616 doi:10.1016/j.rse.2022.112987 |
op_doi |
https://doi.org/10.1016/j.rse.2022.112987 |
container_title |
Remote Sensing of Environment |
container_volume |
273 |
container_start_page |
112987 |
_version_ |
1766166196841873408 |