4
Recorded earthquakes
region
September 1975
south of Tonga earthquakes in September 1975
Earthquake archive for south of Tonga in September 1975: 4 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
5.4
Strongest magnitude
4.9
Average magnitude
43.8 km
Average depth
Strongest event
5.4
29 Sep 1975
Analysis of the recorded activity
During September 1975, 4 earthquakes were recorded near south of Tonga. Magnitudes ranged from 4.4 to 5.4, with an average of 4.9; depths ranged from 33.0 to 76.0 km, averaging 43.8 km. Activity extended from Wednesday, September 10, 1975 to Monday, September 29, 1975 UTC.
Only 4 earthquakes in the current catalogue match this period and location.
Event list