Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations
Abstract After the construction of hydropower station, reservoir impoundment can directly affect the movement status of landslides within the reservoir area. Detecting landslides and revealing the relationship between landslide deformation and driving forces is crucial for reducing the threat of lan...
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| Format: | Article |
| Language: | English |
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American Geophysical Union (AGU)
2025-04-01
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| Series: | Earth and Space Science |
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| Online Access: | https://doi.org/10.1029/2024EA004002 |
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| author | Fan Wen Chuang Song Zhenhong Li Chen Yu Bo Chen Jiantao Du Zhenjiang Liu Ying Wen |
| author_facet | Fan Wen Chuang Song Zhenhong Li Chen Yu Bo Chen Jiantao Du Zhenjiang Liu Ying Wen |
| author_sort | Fan Wen |
| collection | DOAJ |
| description | Abstract After the construction of hydropower station, reservoir impoundment can directly affect the movement status of landslides within the reservoir area. Detecting landslides and revealing the relationship between landslide deformation and driving forces is crucial for reducing the threat of landslide hazards to residents and hydropower station in reservoir areas. In this study, active landslides in the reservoir areas of Wudongde Hydropower Station, were detected combining Interferometric Synthetic Aperture Radar observations and optical image interpretation. Through detailed verification and screening, we identified 128 landslides, most of which are located at an altitude of 1,000–2,000 m, with slopes of 20–35°. After reservoir impoundment, wading landslides were found to be more prone to change state than non‐wading landslides. As the primary control factor of wading landslides, reservoir impoundment can either accelerate or decelerate landslide deformation depending on the equilibrium state between soil saturation and hydrostatic pressure. Furthermore, wavelet transform analysis indicates that rainfall and reservoir level significantly contribute to the seasonal oscillations of landslide deformation. The results of this study can contribute to the prevention of landslide hazards in the Wudongde reservoir area and other areas of the world where large hydropower stations have been constructed. |
| format | Article |
| id | doaj-art-99acda8c71aa4598a3423f10e1cafa6a |
| institution | Kabale University |
| issn | 2333-5084 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj-art-99acda8c71aa4598a3423f10e1cafa6a2025-08-20T03:53:33ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842025-04-01124n/an/a10.1029/2024EA004002Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR ObservationsFan Wen0Chuang Song1Zhenhong Li2Chen Yu3Bo Chen4Jiantao Du5Zhenjiang Liu6Ying Wen7College of Geological Engineering and Geomatics Chang'an University Xi'an ChinaCollege of Geological Engineering and Geomatics Chang'an University Xi'an ChinaCollege of Geological Engineering and Geomatics Chang'an University Xi'an ChinaCollege of Geological Engineering and Geomatics Chang'an University Xi'an ChinaCollege of Geological Engineering and Geomatics Chang'an University Xi'an ChinaCollege of Geological Engineering and Geomatics Chang'an University Xi'an ChinaCollege of Geological Engineering and Geomatics Chang'an University Xi'an ChinaCollege of Geological Engineering and Geomatics Chang'an University Xi'an ChinaAbstract After the construction of hydropower station, reservoir impoundment can directly affect the movement status of landslides within the reservoir area. Detecting landslides and revealing the relationship between landslide deformation and driving forces is crucial for reducing the threat of landslide hazards to residents and hydropower station in reservoir areas. In this study, active landslides in the reservoir areas of Wudongde Hydropower Station, were detected combining Interferometric Synthetic Aperture Radar observations and optical image interpretation. Through detailed verification and screening, we identified 128 landslides, most of which are located at an altitude of 1,000–2,000 m, with slopes of 20–35°. After reservoir impoundment, wading landslides were found to be more prone to change state than non‐wading landslides. As the primary control factor of wading landslides, reservoir impoundment can either accelerate or decelerate landslide deformation depending on the equilibrium state between soil saturation and hydrostatic pressure. Furthermore, wavelet transform analysis indicates that rainfall and reservoir level significantly contribute to the seasonal oscillations of landslide deformation. The results of this study can contribute to the prevention of landslide hazards in the Wudongde reservoir area and other areas of the world where large hydropower stations have been constructed.https://doi.org/10.1029/2024EA004002InSARreservoir impoundmentlandslide detectioncontrol factorWudongde Hydropower Station |
| spellingShingle | Fan Wen Chuang Song Zhenhong Li Chen Yu Bo Chen Jiantao Du Zhenjiang Liu Ying Wen Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations Earth and Space Science InSAR reservoir impoundment landslide detection control factor Wudongde Hydropower Station |
| title | Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations |
| title_full | Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations |
| title_fullStr | Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations |
| title_full_unstemmed | Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations |
| title_short | Landslide Detection and Deformation Control Analysis in the Reservoir Area of Wudongde Hydropower Station by InSAR Observations |
| title_sort | landslide detection and deformation control analysis in the reservoir area of wudongde hydropower station by insar observations |
| topic | InSAR reservoir impoundment landslide detection control factor Wudongde Hydropower Station |
| url | https://doi.org/10.1029/2024EA004002 |
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