2
Recorded earthquakes
region
April 1991
Chiba earthquakes in April 1991
Earthquake archive for Chiba in April 1991: 2 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.8
Strongest magnitude
4.6
Average magnitude
51.0 km
Average depth
Strongest event
4.8
03 Apr 1991
Chiba, Japan
Depth
33.0 km
UTC
20:27:39
Coordinates
33.693, 142.001
Analysis of the recorded activity
During April 1991, 2 earthquakes were recorded near Chiba. Magnitudes ranged from 4.5 to 4.8, with an average of 4.7; depths ranged from 33.0 to 69.1 km, averaging 51.1 km. Activity extended from Wednesday, April 3, 1991 to Monday, April 8, 1991 UTC.
Only 2 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.8
33.0 km
Chiba, Japan
03 Apr 1991 20:27:39 UTC
4.5
69.1 km
Chiba, Japan
08 Apr 1991 21:08:19 UTC