Physical Vulnerability of Surabaya due to Earthquake Based on Rapid Visual Screening

Finding of new faults in Surabaya city has attracted many researchers to evaluate the seismic resilience of the city. A major earthquake in Surabaya may cause a huge losses for the country due to its massive population and large business activities. In this research, a physical vulnerability map of buildings in Surabaya was developed, particularly due to the updated potential earthquake in Surabaya. The results are expected to be used as part of a mitigation and risk reduction strategy for earthquake disasters in the city of Surabaya. The sampled buildings were aggregated in the scale of regional blocks and urban villages in Surabaya, considering the structural type and typology of the buildings. The aggregation process to capture the distribution of existing buildings uses various inputs from landsat maps, google maps, google street view, CKTR Surabaya (Cmap), and openstreetmap Surabaya. Spatial mapping in the scale of regional and village blocks with more precise data will be an essential information in earthquake risk reduction strategies.