Open AccessSeismic hazard and seismicity parameters in southwestern Alborz
Author(s) -
Fereshteh Pourmohammad,
Mehdi Zaré,
Arezoo Dorostian,
Bahram Akasheh
Publication year - 2021
Publication title -
nexo
Language(s) - English
Resource type - Journals
eISSN - 1995-9516
pISSN - 1818-6742
DOI - 10.5377/nexo.v34i02.11550
Subject(s) - induced seismicity , seismology , geology , magnitude (astronomy) , seismic hazard , return period , seismic zone , geography , physics , archaeology , astronomy , flood myth
Alborz Province is located west of Tehran Province on the South Alborz seismic belt. Geological and seismological analyses within a radius of 200 km from the center of Karaj identified five seismic zones and seven linear seismic sources. The maximum magnitude was calculated for the seismic zones using available correlations. The Kijko and Sellevoll (1992) method was used to calculate seismicity parameters, and the graphs of the return period and the probability frequency of recurrence of the earthquake magnitude in each zone were plotted for the 475-year return period. According to the calculations, the highest and lowest earthquake magnitudes of 7.6 and 6.2 were respectively obtained in Zones 1 and 4.