Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images
Landslide-dammed lakes and their breaches can reactivate/accelerate landslides, causing potential damages. However, in the absence of displacement observations, the spatial-temporal deformation patterns of the landslide-dammed lakes and associated floods reactivated/accelerated...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10342762/ |
| _version_ | 1797376340496744448 |
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| author | Zhiqiang Xiong Guangcai Feng Lijia He Haiyan Wang Jianchao Wei |
| author_facet | Zhiqiang Xiong Guangcai Feng Lijia He Haiyan Wang Jianchao Wei |
| author_sort | Zhiqiang Xiong |
| collection | DOAJ |
| description | Landslide-dammed lakes and their breaches can reactivate/accelerate landslides, causing potential damages. However, in the absence of displacement observations, the spatial-temporal deformation patterns of the landslide-dammed lakes and associated floods reactivated/accelerated landslides remain underexplored. In this article, we use the 2018 Baige landslide-dammed lake and associated floods reactivated/accelerated landslides to investigate the behaviors of such landslides. We first use an improved interferograms Stacking method to detect landslides, then utilize the multitemporal interferometric synthetic aperture radar to derive their deformation history. Through retrospective analysis of the deformation history and optical images, we find that the water level fluctuations and floods caused by the Baige landslide-dammed lake and its breaches reactivated/accelerated six landslides upstream and five landslides downstream. The area of the largest reactivated/accelerated landslide is about 5 km<sup>2</sup>. The maximum velocity change of these reactivated/accelerated landslides is about 20 cm/year. Landslide reactivation/acceleration occurs progressively from the toe to head, resulting in varying reactivation/acceleration times for different parts. The velocity change and acceleration area have a linear relationship, with larger landslides showing larger velocity changes and prolonged activity than smaller ones. Among these 11 reactivated/accelerated landslides, 4 are located in the river narrow sections and their volumes are all larger than that of the Baige landslide. Thus, their failure may cause larger damages than that caused by the Baige landslide. Our findings contribute to a better understanding of landslide-induced geological hazard chains and landslide behaviors. |
| first_indexed | 2024-03-08T19:38:07Z |
| format | Article |
| id | doaj.art-3707891490d74b8bb3c458d667599887 |
| institution | Directory Open Access Journal |
| issn | 2151-1535 |
| language | English |
| last_indexed | 2024-03-08T19:38:07Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| spelling | doaj.art-3707891490d74b8bb3c458d6675998872023-12-26T00:01:22ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing2151-15352024-01-01171656167210.1109/JSTARS.2023.333923410342762Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical ImagesZhiqiang Xiong0https://orcid.org/0009-0007-9582-0544Guangcai Feng1https://orcid.org/0000-0003-4815-495XLijia He2https://orcid.org/0000-0001-6642-8147Haiyan Wang3https://orcid.org/0009-0008-7817-9297Jianchao Wei4https://orcid.org/0000-0001-9090-9370School of Geosciences and Info-Physics, Central South University, Changsha, ChinaSchool of Geosciences and Info-Physics, Central South University, Changsha, ChinaSchool of Geosciences and Info-Physics, Central South University, Changsha, ChinaChongqing 208 Geological Environment Research Institute Company, Ltd., Chongqing, ChinaSchool of Earth Sciences and Spatial Information Engineering, Hunan University of Science and Technology, Xiangtan, ChinaLandslide-dammed lakes and their breaches can reactivate/accelerate landslides, causing potential damages. However, in the absence of displacement observations, the spatial-temporal deformation patterns of the landslide-dammed lakes and associated floods reactivated/accelerated landslides remain underexplored. In this article, we use the 2018 Baige landslide-dammed lake and associated floods reactivated/accelerated landslides to investigate the behaviors of such landslides. We first use an improved interferograms Stacking method to detect landslides, then utilize the multitemporal interferometric synthetic aperture radar to derive their deformation history. Through retrospective analysis of the deformation history and optical images, we find that the water level fluctuations and floods caused by the Baige landslide-dammed lake and its breaches reactivated/accelerated six landslides upstream and five landslides downstream. The area of the largest reactivated/accelerated landslide is about 5 km<sup>2</sup>. The maximum velocity change of these reactivated/accelerated landslides is about 20 cm/year. Landslide reactivation/acceleration occurs progressively from the toe to head, resulting in varying reactivation/acceleration times for different parts. The velocity change and acceleration area have a linear relationship, with larger landslides showing larger velocity changes and prolonged activity than smaller ones. Among these 11 reactivated/accelerated landslides, 4 are located in the river narrow sections and their volumes are all larger than that of the Baige landslide. Thus, their failure may cause larger damages than that caused by the Baige landslide. Our findings contribute to a better understanding of landslide-induced geological hazard chains and landslide behaviors.https://ieeexplore.ieee.org/document/10342762/Baige landslidefloodsinterferometric synthetic aperture radar (InSAR)landslide accelerationlandslide-dammed lake |
| spellingShingle | Zhiqiang Xiong Guangcai Feng Lijia He Haiyan Wang Jianchao Wei Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Baige landslide floods interferometric synthetic aperture radar (InSAR) landslide acceleration landslide-dammed lake |
| title | Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images |
| title_full | Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images |
| title_fullStr | Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images |
| title_full_unstemmed | Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images |
| title_short | Reactivation/Acceleration of Landslides Caused by the 2018 Baige Landslide-Dammed Lake and its Breach Floods Revealed by InSAR and Optical Images |
| title_sort | reactivation acceleration of landslides caused by the 2018 baige landslide dammed lake and its breach floods revealed by insar and optical images |
| topic | Baige landslide floods interferometric synthetic aperture radar (InSAR) landslide acceleration landslide-dammed lake |
| url | https://ieeexplore.ieee.org/document/10342762/ |
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