Comparación de los resultados de riesgo sísmico en dos ciudades con los mismos coeficientes de diseño sismo resistente of the Seismic Risk Results in Two Cities with the Same Earthquake Resistant Design

According to the national building code NSR-10, the cit- ies of Bogota and Medellin have the same seismic design coefficients A a and A v that, in a first approach, would in - dicate the same seismic hazard level. However, the selec- tion of the design return period corresponds to an arbitrary decision and equal hazard values for these two cities are just a mere coincidence because seismicity in each case is influenced by completely different seismo-tectonic envi - ronments. The comparison of the seismic risk results from a physical perspective allows identifying the influence of seismogenetic sources, local site effects and physical vul- nerability in said analysis.