Volume 19, Issue 4 (Winter 2025)
2025, 19(4): 495-517 |
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Mirshafiey S A, Milan A. Analysis of earth surface elevation changes induced by an earthquake using differential radar interferometry in the Khoy region. Journal of Engineering Geology 2025; 19 (4) :495-517
URL: http://jeg.khu.ac.ir/article-1-3152-en.html
URL: http://jeg.khu.ac.ir/article-1-3152-en.html
1- Shahid Beheshti University
2- Shahid Beheshti University ,a_milan@sbu.ac.ir
2- Shahid Beheshti University ,
Abstract: (1594 Views)
As one of the key factors causing changes in the Earth's altitude, earthquakes can lead to subsidence or uplift in different areas. These changes are mainly caused by the displacement of tectonic plates, movement along faults and changes in pressure deep within the Earth. The type of fault and the conditions of the earthquake determine whether uplift or subsidence occurs. Monitoring and examining these changes is of great importance for crisis management and relief, improving urban planning, and reducing environmental damage. To study changes in the Earth's surface, various methods are used, including accurate alignment, global positioning systems, laser scanning, and remote sensing, each of which has a specific accuracy and characteristic. Nowadays, satellite data and remote sensing methods are an efficient tool for calculating the vertical displacement of the Earth's surface. This study investigated the potential of Sentinel-1 satellite data and images to study land surface changes due to the 5.6-magnitude Khoy earthquake using the radar differential interferometry technique. Processing the radar images before and after the earthquake allowed us to extract the vertical displacements of the phase changes. The results show uplift and subsidence occurring in some areas close to the epicentre and in more distant places. The maximum uplift was 0.08 metres and the maximum subsidence was -0.156 metres. These results demonstrate the non-uniform pattern of land surface elevation changes caused by this earthquake.
Type of Study: Original Research |
Subject:
Engineering Geology
Received: 2025/03/1 | Accepted: 2025/12/7 | Published: 2025/12/31
Received: 2025/03/1 | Accepted: 2025/12/7 | Published: 2025/12/31
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