IRAN STRONG MOTION NETWORK RENOVATION

Strong ground motion records are the main input data to earthquake engineering studies such as dynamic structural analyses and seismic hazard evaluation, helping us to improve our understanding of seismic hazard and risk. This data is used as basic information on the development of earthquake building codes. The Iran strong motion network (ISMN), Road, Housing and Urban Development Research Center (BHRC), is operating a network of about 1115 digital strong motion accelerometer.Strong motion monitoring of earthquake activity in Iran began at the onset of the 1973, consisting of 270 analog SMA- 1 stations. Since then Iran has been at the forefront of strong motion monitoring in Middle East. In the early 1990s, after Manjil destructive earthquake, the National Strong Motion Network was established including dial-up triggeredinstrumentation replaced the analog sensors. This network, consisting of 1070 SSA-2 sensors, was installed across Iran, 547 free-field stations as well as of 91 dam-related (see Figure 1).

کلیدواژه ها:

Iran ، Strong motion ، Network ، Monitoring