the necessity of 2d/3d site effect studies in big cities of iran: premilinary results of tehran experiment

Iran is one of the most seismically active countries in the world due to the collision between the arabian and eurasian plate. according to the 4th version of iranian seismic building code (bhrc, 2016) 14 out of 18 metropolises of iran (metropolis in iran defined as the large city which is a signifiant economic, political, and cultural center with over 1 million (or sometimes 500,000) inhabitants.) are located in areas with high and very high seismic risk hazard. most of these citiesare located along valleys on soft unconsolidated sediments, a very common example of a 2d structure.