DEM-Based Vs30 Map and Terrain Surface Classification in Nationwide Scale—A Case Study in Iran

摘要: Different methods have been proposed to create seismic site condition maps. Ground-based are time-consuming in many places and require a lot of manual work. One method suggests topographic data as proxy for large areas. In this study, we mainly focused on the use an ASTER 1c digital elevation model (DEM) produce Vs30 maps throughout Iran using GIS-based regression analysis measurements at 514 stations. These were found be comparable with those that previously created from SRTM 30c data. The results estimated higher velocities better than 30c. addition, combination amplification can useful detection geological geomorphological units. We also classified terrain surface six seismotectonic regions into 16 classes, considering three important criteria (slope, convexity texture) extract more information about location morphological characteristics show 98% stations situated 30% which class 12, 27% 6, 17% 9, 16% 3, 4% 3and rest located other classes.