3
Recorded earthquakes
region
August 1981
Bonin Islands earthquakes in August 1981
Earthquake archive for Bonin Islands in August 1981: 3 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.8
Strongest magnitude
4.6
Average magnitude
332.7 km
Average depth
Strongest event
4.8
25 Aug 1981
Bonin Islands, Japan region
Depth
33.0 km
UTC
22:04:35
Coordinates
28.989, 140.031
Analysis of the recorded activity
During August 1981, 3 earthquakes were recorded near Bonin Islands. Magnitudes ranged from 4.5 to 4.8, with an average of 4.6; depths ranged from 33.0 to 508.8 km, averaging 332.7 km. Activity extended from Thursday, August 13, 1981 to Tuesday, August 25, 1981 UTC.
Only 3 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.8
33.0 km
Bonin Islands, Japan region
25 Aug 1981 22:04:35 UTC
4.6
508.8 km
Bonin Islands, Japan region
21 Aug 1981 14:29:06 UTC
4.5
456.3 km
Bonin Islands, Japan region
13 Aug 1981 11:05:50 UTC