Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet)
ABSTRACT: The Tibetan Plateau is characterized by complex geological conditions and a relatively fragile ecological environment. In recent years, there has been continuous development and increased human activity in the Tibetan Plateau region, leading to a rising risk of landslides. The landslide in...
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KeAi Communications Co., Ltd.
2024-04-01
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| Series: | China Geology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2096519224001046 |
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| author | Guan-hua Zhao Heng-xing Lan Hui-yong Yin Lang-ping Li Alexander Strom Wei-feng Sun Chao-yang Tian |
| author_facet | Guan-hua Zhao Heng-xing Lan Hui-yong Yin Lang-ping Li Alexander Strom Wei-feng Sun Chao-yang Tian |
| author_sort | Guan-hua Zhao |
| collection | DOAJ |
| description | ABSTRACT: The Tibetan Plateau is characterized by complex geological conditions and a relatively fragile ecological environment. In recent years, there has been continuous development and increased human activity in the Tibetan Plateau region, leading to a rising risk of landslides. The landslide in Banbar County, Xizang (Tibet), have been perturbed by ongoing disturbances from human engineering activities, making it susceptible to instability and displaying distinct features. In this study, small baseline subset synthetic aperture radar interferometry (SBAS-InSAR) technology is used to obtain the Line of Sight (LOS) deformation velocity field in the study area, and then the slope-orientation deformation field of the landslide is obtained according to the spatial geometric relationship between the satellite's LOS direction and the landslide. Subsequently, the landslide thickness is inverted by applying the mass conservation criterion. The results show that the movement area of the landslide is about 6.57×104 m2, and the landslide volume is about 1.45×106 m3. The maximum estimated thickness and average thickness of the landslide are 39 m and 22 m, respectively. The thickness estimation results align with the findings from on-site investigation, indicating the applicability of this method to large-scale earth slides. The deformation rate of the landslide exhibits a notable correlation with temperature variations, with rainfall playing a supportive role in the deformation process and displaying a certain lag. Human activities exert the most substantial influence on the spatial heterogeneity of landslide deformation, leading to the direct impact of several prominent deformation areas due to human interventions. Simultaneously, utilizing the long short-term memory (LSTM) model to predict landslide displacement, and the forecast results demonstrate the effectiveness of the LSTM model in predicting landslides that are in a continuous development and movement phase. The landslide is still active, and based on the spatial heterogeneity of landslide deformation, new recommendations have been proposed for the future management of the landslide in order to mitigate potential hazards associated with landslide instability. |
| format | Article |
| id | doaj-art-de14018c828d47bca5eb61613533671d |
| institution | DOAJ |
| issn | 2589-9430 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | China Geology |
| spelling | doaj-art-de14018c828d47bca5eb61613533671d2025-08-20T02:42:04ZengKeAi Communications Co., Ltd.China Geology2589-94302024-04-017220322110.31035/cg2023130Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet)Guan-hua Zhao0Heng-xing Lan1Hui-yong Yin2Lang-ping Li3Alexander Strom4Wei-feng Sun5Chao-yang Tian6College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaState Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China; Key Laboratory of Ecological Geology and Disaster Prevention, Ministry of Natural Resources, Xi'an 710054, China; Corresponding author:College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author:JSC “Hydroproject Institute”, Moscow 125993, RussiaSchool of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, ChinaSchool of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, ChinaABSTRACT: The Tibetan Plateau is characterized by complex geological conditions and a relatively fragile ecological environment. In recent years, there has been continuous development and increased human activity in the Tibetan Plateau region, leading to a rising risk of landslides. The landslide in Banbar County, Xizang (Tibet), have been perturbed by ongoing disturbances from human engineering activities, making it susceptible to instability and displaying distinct features. In this study, small baseline subset synthetic aperture radar interferometry (SBAS-InSAR) technology is used to obtain the Line of Sight (LOS) deformation velocity field in the study area, and then the slope-orientation deformation field of the landslide is obtained according to the spatial geometric relationship between the satellite's LOS direction and the landslide. Subsequently, the landslide thickness is inverted by applying the mass conservation criterion. The results show that the movement area of the landslide is about 6.57×104 m2, and the landslide volume is about 1.45×106 m3. The maximum estimated thickness and average thickness of the landslide are 39 m and 22 m, respectively. The thickness estimation results align with the findings from on-site investigation, indicating the applicability of this method to large-scale earth slides. The deformation rate of the landslide exhibits a notable correlation with temperature variations, with rainfall playing a supportive role in the deformation process and displaying a certain lag. Human activities exert the most substantial influence on the spatial heterogeneity of landslide deformation, leading to the direct impact of several prominent deformation areas due to human interventions. Simultaneously, utilizing the long short-term memory (LSTM) model to predict landslide displacement, and the forecast results demonstrate the effectiveness of the LSTM model in predicting landslides that are in a continuous development and movement phase. The landslide is still active, and based on the spatial heterogeneity of landslide deformation, new recommendations have been proposed for the future management of the landslide in order to mitigate potential hazards associated with landslide instability.http://www.sciencedirect.com/science/article/pii/S2096519224001046LandslideInSARHuman activityDeformationStructureLSTM model |
| spellingShingle | Guan-hua Zhao Heng-xing Lan Hui-yong Yin Lang-ping Li Alexander Strom Wei-feng Sun Chao-yang Tian Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet) China Geology Landslide InSAR Human activity Deformation Structure LSTM model |
| title | Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet) |
| title_full | Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet) |
| title_fullStr | Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet) |
| title_full_unstemmed | Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet) |
| title_short | Deformation, structure and potential hazard of a landslide based on InSAR in Banbar county, Xizang (Tibet) |
| title_sort | deformation structure and potential hazard of a landslide based on insar in banbar county xizang tibet |
| topic | Landslide InSAR Human activity Deformation Structure LSTM model |
| url | http://www.sciencedirect.com/science/article/pii/S2096519224001046 |
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