A comprehensive earthquake catalogue for the Iranian Plateau (400 B.C. to December 31, 2018)

We provide a comprehensive earthquake catalogue for Iran that is suitable for detailed seismological analysis and seismic hazard assessment. Based on the work by (Mousavi-Bafrouei et al. Ann Geophys 57:S0653, 2014 ) and new sources of data, we extend the uniform Iranian earthquake catalogue to include events from fourth century B.C. to December 31, 2018. Conversion relationships between moment magnitude ( M w ) and body wave, surface wave, Nuttli and local magnitudes are presented and used to estimate M w based on a priority system. The updated earthquake catalogue includes 25,937 earthquakes with M w between 2.6 and 8.1. Catalogue declustering, using the method of conjugate windows, results in 1772 clusters with 17,123 events with M w between 2.9 and 8.1. We also evaluate magnitude of completeness and seismicity parameters including the Gutenberg-Richter b -value, mean annual seismic activity rate and maximum expected magnitude in five seismotectonic units. Overall, the Zagros unit has the highest b -value among all units, whereas the Makran unit shows the lowest b -value indicating possibility of the largest range of magnitudes in the region.