Surface deformation monitoring and analysis of Southwest University of Science and Technology based on time series InSAR

Wei LU; Bin YANG; Kun YANG

doi:10.16031/j.cnki.issn.1003-8035.202202060

Volume 34 Issue 2

Apr. 2023

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The Chinese Journal of Geological Hazard and Control > 2023 > 34(2): 61-72. > DOI: 10.16031/j.cnki.issn.1003-8035.202202060

LU Wei，YANG Bin，YANG Kun. Surface deformation monitoring and analysis of Southwest University of Science and Technology based on time series InSAR[J]. The Chinese Journal of Geological Hazard and Control，2023，34(2): 61-72. DOI: 10.16031/j.cnki.issn.1003-8035.202202060

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Surface deformation monitoring and analysis of Southwest University of Science and Technology based on time series InSAR

Wei LU^1,,
Bin YANG^{1, 2, 3, ,},
Kun YANG¹

1.
School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan　621010, China
2.
Mianyang S & T City Division, National Remote Sensing Center of China, Mianyang, Sichuan　621010, China
3.
Tianfu Institute of Research and Innovation, Southwest University of Science and Technology, Chengdu, Sichuan　610299, China

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Received Date: February 26, 2022
Revised Date: August 01, 2022
Available Online: March 01, 2023

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Abstract

Abstract

Taking Qingyi campus of Southwest University of Science and Technology as the study area, the surface deformation rate and time sequence variables of the study area from June 2017 to November 2020 were obtained by using SBAS-InSAR and PS-InSAR on 52 scene ascending Sentinel-1A radar images. Combined with coherence coefficient, deformation rate, variance and standard deviation, the results of two Time Series InSAR are tested and compared, and the mechanism and evolution process of surface deformation in the study area are discussed from two aspects of natural and human factors. The results show that there are many significant settlements in the study area, and the maximum vertical settlement rate can reaches 15 mm/a. The surface deformation is related to the factors such as student apartment buildings and road expansion. The surface settlement area is closely related to heavy rainfall, lithology and topography, and the stratigraphic boundary is not significantly related to the surface deformation. In general, the two monitoring results are generally consistent, and the monitoring results of SBAS-InSAR are more robust than PS-InSAR.
- time series InSAR,
- campus expansion,
- surface deformation,
- rainfall,
- lithology

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References

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Surface deformation monitoring and analysis of Southwest University of Science and Technology based on time series InSAR

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