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Articles | Volume XLIII-B3-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2020, 887–891, 2020
https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-887-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2020, 887–891, 2020
https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-887-2020

  21 Aug 2020

21 Aug 2020

CHARACTERIZATION OF THE FROST HEAVE DEFORMATIONS IN HIGH LATITUDE AND DEEP SEASONALLY FROZEN SOIL OF INNER MONGOLIA WITH SENTINEL-1 INSAR OBSERVATIONS

T. Qu1,2, H. Zhang3, F. Niu4, X. Shi5, and Z. Li6 T. Qu et al.
  • 1College of Engineering, Peking University, Beijing 100871, China
  • 2China-Pakistan Joint Research Center on Earth Sciences, Islamabad 45320, Pakistan
  • 3Inner Mongolia Transport Construction Engineering Quality Supervision Bureau, Hohhot 010051, China
  • 4State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
  • 5School of Geography and Information Engineering, China University of Geosciences (Wuhan), Wuhan 430078, China
  • 6COMET, School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK

Keywords: Frost Heave, Seasonally Frozen Soil, Time Series InSAR, Sentinel-1, Deformation Monitoring, Freeze-thaw

Abstract. Global warming in recent years led to significant permafrost degradation worldwide. Accurate monitoring and comprehensive characterization of the deformation process in seasonally frozen soil is of great importance for constructions in cold regions in China. This work concentrates on the deformation laws and spatio-temporal characteristics of frost heave in high latitude and seasonally frozen soil of Inner Mongolia with time series InSAR observations. With 101 Sentinel-1 descending scenes that covered more than three freeze-thaw cycles for the study area along Shiwei-Labudalin Highway, this study realized the characterization of the frost heave deformations in seasonally frozen soil, and the analysis of the influencing factors of the hydrothermal process with the help of temperature and moisture data from in-situ monitoring. Time series InSAR observations show that most parts of the highway show obvious deformation with a displacement rate of around 30–60 mm/yr. Especially, the deformation evolution in this seasonally frozen soil region changes with seasons, demonstrating a notable annual cyclical characteristic and seasonal activity. Moreover, time series in-situ monitoring data in deep underground boreholes not only further explains the deformation kinematics from InSAR observations, but also provide a better supplement for a more comprehensive mechanism understanding of frost heave deformations.