An se , ▁H ait i ▁on ▁October ▁ 2 8 ▁at ▁a ▁depth ▁of ▁ 2 5 . 0   km . ▁ ▁A ▁magnitude ▁ 6 . 3 ▁earth qu ake ▁struck ▁off ▁the ▁east ▁coast ▁of ▁H ons hu , ▁Japan ▁on ▁October ▁ 2 8 ▁at ▁a ▁depth ▁of ▁ 1 5 . 0   km . ▁ ▁A ▁magnitude ▁ 6 . 5 ▁earth qu ake ▁struck ▁T ong a ▁on ▁October ▁ 2 9 ▁at ▁a ▁depth ▁of ▁ 1 3 5 . 0   km . ▁ ▁A ▁magnitude ▁ 6 . 5 ▁earth qu ake ▁struck ▁off ▁the ▁east ▁coast ▁of ▁H ons hu , ▁Japan ▁on ▁October ▁ 3 1 ▁at ▁a ▁depth ▁of ▁ 2 0 . 0   km . ▁ ▁A ▁magnitude ▁ 6 . 2 ▁earth qu ake ▁struck ▁S ich uan ▁Province , ▁China ▁on ▁October ▁ 3 1 ▁at ▁a ▁depth ▁of ▁ 1 5 . 0   km . ▁ ▁November ▁▁▁ ▁A ▁magnitude ▁ 6 . 9 ▁earth qu ake ▁struck ▁F iji ▁on ▁November ▁ 1 ▁at ▁a ▁depth ▁of ▁ 1 7 0 . 7   km . ▁ ▁A ▁magnitude ▁ 9 . 0 ▁earth qu ake ▁struck ▁off ▁the ▁east ▁coast ▁of ▁Kam chat ka , ▁Russia ▁on ▁November ▁ 4 ▁at ▁a ▁depth ▁of ▁ 2 1 . 6   km . ▁This ▁was ▁one ▁of ▁the ▁largest ▁earth qu akes ▁of ▁all ▁time . ▁This ▁event ▁triggered ▁a ▁dev ast