Iran, Bojnurd: 1966-2017

The Bojnurd cluster is named for the city of Bojnord in the North Khorasan province, Iran. This cluster mostly consists of moderate-sized recent events (M<6) but also includes the MS 6.8 earthquake on July 30, 1970 and the MS 6.6 event on February, 4 1997. The geographic extent of the cluster is larger than usual in order to have acceptable azimuthal coverage for the hypocentroid. A.R. Ghods repicked many of the arrival times from Iranian networks, including S-P data from the INSM network of accelerometers (BHRC). Focal depths of 103 events are constrained by near- and local-distance readings; the remaining 74 events are held at the default depth of 16 km. Further information about this cluster is contained in: Karasözen et al. (in [...]