Identification of potential landslides in the head area of the Three Gorges Reservoir based on time series InSAR

YIN Zong-Min，ZHAO Bao-Qiang，YE Run-Qing

doi:10.3969/j.issn.2097-0013.2022.02.008

2022 Vol. 38, No. 2

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Article navigation > South China Geology > 2022 > 38(2): 273-280

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YIN Zong-Min，ZHAO Bao-Qiang，YE Run-Qing. 2022. Identification of potential landslides in the head area of the Three Gorges Reservoir based on time series InSAR. South China Geology, 38(2): 273-280. doi: 10.3969/j.issn.2097-0013.2022.02.008

Citation:

YIN Zong-Min，ZHAO Bao-Qiang，YE Run-Qing. 2022. Identification of potential landslides in the head area of the Three Gorges Reservoir based on time series InSAR. South China Geology, 38(2): 273-280. doi: 10.3969/j.issn.2097-0013.2022.02.008

Identification of potential landslides in the head area of the Three Gorges Reservoir based on time series InSAR

YIN Zong-Min，ZHAO Bao-Qiang，YE Run-Qing¹

1. Wuhan Center of China Geological Survey (Central South China Innovation Center for Geosciences), Wuhan 430205, Hubei, China
2. Troops 32020, Wuhan 430010, Hubei, China

Received Date: 02 December 2021

Revised Date: 18 December 2021

Abstract

Abstract

The continuous development of faults in the Three Gorges Reservoir area induces a variety of geological disasters, especially the landslide disasters. Thus, the identification of landslide disasters is particularly emergently. In this study, time-series InSAR technology is used to monitor the surface deformation of the head region of the Three Gorges Reservoir. Based on data-processing techniques including image cropping, image registration, terrain phase estimation, differential interference, high-coherence point selection, phase unwrapping, deformation extraction, and error estimation, PS points in the time series of the head region of the Three Gorges Reservoir are obtained. The deformation rate values of the PS points are used to delineate the potential landslide area. The deformation curve and image analysis verify that the time series InSAR technology utilized for the identification of landslides in the head region of the Three Gorges Reservoir area is feasible and effective. The results will provide the scientific basis for the prevention and control of geological hazards in the Three Gorges Reservoir area.
- the head area of the Three Gorges Reservoir /
- time series InSAR /
- PS point /
- deformation curve /
- potential landslide

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References

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