Measuring the amount of land subsidence using radar interferometry technique (Case study: Earthquake-affected areas west of Kermanshah)

Document Type : Research Article

Authors

1 Master Graduate of Remote Sensing & GIS, University of Mohaghegh Ardabili, Ardabil, Iran

2 Assistant Professor of Remote Sensing, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran.

3 Associate Professor of Geomorphology, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran

Abstract

Land subsidence is one of the ecological crises that especially cause damage to human facilities such as communication networks and buildings. Many factors affect the subsidence of the earth, and earthquakes can be one of those factors. The current research examines the effect of the November 2017 earthquake in the western region of Kermanshah on subsidence. For this purpose, the differential radar interferometric method and Sentinel 1 satellite data have been used to investigate the subsidence of the region. Pair processing of radar images in the study area between 11/11/2017 and 11/30/2017 showed that the amount of vertical displacement in the study areas is between -41.72 and -42.99 cm. According to the obtained results, the average displacement of subsidence in the opposite direction of view is -304.16 and -33.1265 cm, which was observed along the fault lines. Also, the average uplift movement rate in the studied area is 17.53 and 34.53 cm per year in line with the satellite view. The evaluation of the displacement map of the region shows that the greatest amount of subsidence was in the eastern, southern, and western parts of Salas Babaji City and the southern and western parts of Sarpol-Zahab city.

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References

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References (in English)
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https://ui.adsabs.harvard.edu/link_gateway/2014IJAEO.28.78

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History

  • Receive Date: 06 July 2022
  • Revise Date: 15 October 2023
  • Accept Date: 18 October 2023
  • First Publish Date: 18 October 2023
  • Publish Date: 22 December 2023

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