ating ▁t sun ami . ▁The ▁death ▁to ll ▁varied ▁from ▁a ▁low ▁estimate ▁of ▁ 4 , 0 0 0 ▁to ▁as ▁high ▁as ▁ 1 0 - 1 7 , 0 0 0 . ▁Information ▁on ▁the ▁dis aster ▁was ▁initially ▁sparse ▁due ▁to ▁secre cy ▁by ▁the ▁government ▁of ▁the ▁Soviet ▁Union . ▁ ▁As ▁a ▁result ▁of ▁many ▁after sh ock s ▁striking ▁following ▁the ▁great ▁Kam chat ka ▁earth qu ake ▁only ▁a ▁summar ised ▁list ▁of ▁the ▁after sh ock s ▁above ▁magnitude ▁ 6 . 5 + ▁will ▁be ▁detailed . ▁ ▁A ▁magnitude ▁ 6 . 8 ▁earth qu ake ▁struck ▁Mad ang ▁Province , ▁Pap ua ▁New ▁Guinea ▁on ▁November ▁ 6 ▁at ▁a ▁depth ▁of ▁ 5 2 . 1   km . ▁ ▁A ▁magnitude ▁ 6 . 3 ▁earth qu ake ▁struck ▁the ▁G ulf ▁of ▁California ▁on ▁November ▁ 7 ▁at ▁a ▁depth ▁of ▁ 1 5 . 0   km . ▁ ▁A ▁magnitude ▁ 6 . 1 ▁earth qu ake ▁struck ▁West ▁New ▁Britain ▁Province , ▁Pap ua ▁New ▁Guinea ▁on ▁November ▁ 1 6 ▁at ▁a ▁depth ▁of ▁ 3 5 . 0   km . ▁ ▁A ▁magnitude ▁ 6 . 3 ▁earth qu ake ▁struck ▁off ▁the ▁west ▁coast ▁of ▁Nic ar agua ▁on ▁November ▁ 2 0 ▁at ▁a ▁depth ▁of ▁ 3 5 . 0   km . ▁ ▁A ▁magnitude ▁ 6 . 2 ▁earth qu ake ▁struck ▁central ▁California ▁on ▁November