Iranian Seismological Center (IRSC) Reza Mansouri January 2012 University of Tehran Institute of Geophysics

Iranian Seismological Center Permanent Networks in Iran  Iranian Seismological Center (IRSC)  Building & Housing Research Center (BHRC)  International Institute of Earthquake Engineering and Seismology (IIEES)  Khorasan Seismic Network - Ferdowsi University of Mashhad (KHSN)

Iranian Seismological Center The Institute of Geophysics, affiliated with the University of Tehran, constructed the first seismic station in Tehran in 1958, to record and locate earthquakes. In the 1960s, the number of seismic stations increased to five (5) analogue stations installed in the cities of Tehran, Tabriz, Mashhad, Shiraz and Kermanshah. The Iranian Long Period Array (ILPA) consisted of seven (7) stations installed in the south-west of Tehran in In the early 1981s, some additional analogue stations were installed at Brojen, Minoodasht, Mahabad, Ghamsar-e-Kashan and Ghaleh-Ghazi by Institute of Geophysics. Digital seismological equipment was supplied and installed in Tehran and Tabriz seismic local networks in 1995, and gradually the local networks of Semnan, Quchan, Yazd, Sari, Esfahan, Shiraz, Mashhad, Kermanshah, Birjand and Khoram-abad in turn were installed and equipped with digital instruments. The new seismic local networks of Minab, Kerman, Shahr-e-Kord and Hamedan were installed in 2010.

Iranian Seismological Center

Seismic stations are equipped with three (3) component short-period, medium-band or broad-band seismometers. Seismic local networks are developing and expanding according to our short-term, medium-term, and long-term plans. Recorded data in all stations in the country are transmitted to the center of each seismic local network, which relays the data to the Iranian seismological center continuously by VPN or Satellite communications. Today, the Iranian seismological network comprises 85 digital seismic stations in 16 seismic local networks, 4 digital seismic stations and 2 borehole stations which cover most earthquake-prone regions.

Iranian Seismological Center

Our Short period seismic stations are equipped with SS1 seismometers, the medium- bands are equipped with Trillium-40s seismometers, and broad-bands are equipped with CMG3ESP-120s, CMG3T-360s, Trillium-120s, Trillium-240s and Trillium-360s seismometers. Iranian Seismological Center

Semi-automatic ways are used to detect and locate earthquakes in Iranian Plateau at IRSC by using various software and data coming from our stations. Seiscomp3 Earthworm Atlas DAN … The detected event will be revised by combining other Iranian permanent networks’ data such as IIEES and some International Seismic stations

Iranian Seismological Center

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