Special Issue (Coastal Engineering)Paper
INITIAL UNDERSTANDING OF COASTAL DAMAGE DISTRIBUTION IN THE TURKISH MARASH EARTHQUAKE USING SENTINEL-1 SAR
2023 Volume 79 Issue 17 Article ID: 23-17176
Details
2023 Volume 79 Issue 17 Article ID: 23-17176
The objective of this study is to use satellite synthetic aperture radar (SAR) data to obtain an initial understanding of the coastal damage distribution in the Marash Earthquake that occurred on February 6, 2023 in Turkey. The SAR data used are two images taken by the European satellite Sentinel-1 resampled to 30m spatial resolution on January 29, 2023 (before the earthquake) and February 10, 2023 (after the earthquake). We investigated the relationship between areas with large variations in ground roughness, building damage areas, and surrounding geology using the difference images of backscattering cross sections (NRCS) before and after these earthquakes. As a result, the area with large NRCS difference and the strong earthquake area (especially the northern part of the epicenter) were the same. Furthermore, the influence of snow and rain was small in the difference image of the SAR data this time, and the positive difference increased in the unconsolidated sediments layer area (the ground condition became rougher).
