Could the 2019 M=6.4 Yamagata-Oki, Japan, earthquake be an aftershock of a M=7.5 event that struck 55 years ago? – temblor

Could the 2019 M=6.4 Yamagata-Oki, Japan, earthquake be an aftershock of a M=7.5 event that struck 55 years ago?  temblor

The M=6.4 quake occurred in a portion of the Japan Sea coast that fell under the ‘stress shadow’ of the great 2011 M=9.0 Tohoku earthquake. The M=9 shock …