3
Recorded earthquakes
city
1931
Koga earthquakes in 1931
Earthquake archive for Koga in 1931: 3 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
6.5
Strongest magnitude
6.2
Average magnitude
21.7 km
Average depth
Strongest event
6.5
21 Sep 1931
Analysis of the recorded activity
During 1931, 3 earthquakes were recorded near Koga. Magnitudes ranged from 6.0 to 6.5, with an average of 6.2; depths ranged from 15.0 to 35.0 km, averaging 21.7 km. Activity extended from Wednesday, June 17, 1931 to Monday, September 21, 1931 UTC.
Only 3 earthquakes in the current catalogue match this period and location.
Event list