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Slope Deformation Investigation on Typical Debris Flow Gullies of Xiaojiang River Basin Through SBAS-InSAR

  • Jianming Zhang
  • Shu GanEmail author
  • Xiping Yuan
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1075)

Abstract

Xiaojiang River basin is located at Xiaojiang fault zone, southwest of China. At present, the valley is at a maturity of geomorphic evolution, and there are intense in tectonic activities. Because of soil erosion, rock fragmentation and vegetation degradation, multifarious geo-hazards (e.g. collapse, landslide and debris flow) occur frequently in the valley. SBAS-InSAR is an advanced remote sensing technique that can monitor surface deformation in a wide range, and applicable to the vast majority of geo-hazards investigation. In the article, the surface deformation in Xiaojiang valley was estimated by SBAS-InSAR and 46 descending Sentinel-1 SAR data (from October 2014 to May 2018). It shows that a weak deformation with the velocity from −15 to 5 mm/yr was ubiquitous throughout the valley. Prominent deformation concentration zones were detected in the typical debris flow gullies. The area with the fastest deformation velocity was distributed on the southern landslide of Shawan gully, velocity reaching −120.2405 mm/yr. Slope deformation also occurred in Jiangjia gully, Dabaini gully and Xiaobaini gully with different tendencies.

Keywords

SBAS-InSAR Xiaojiang River basin Slope deformation 

Notes

Acknowledgements

This research was supported by the Natural Science Foundation of China (Grant No. 41861054). Sentinel-1 SAR data can be freely download from https://scihub.copernicus.eu/. The SRTM DEM can be freely downloaded from http://srtm.csi.cgiar.org/srtmdata/.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Faculty of Land Resource EngineeringKunming University of Science and TechnologyKunmingChina
  2. 2.Plateau Mountain Spatial Information Survey Technique Application Engineering Research Center at Yunnan Province’s UniversityKunmingChina
  3. 3.West Yunnan University of Applied SciencesDaliChina

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