2
Recorded earthquakes
region
January 1991
Chiba earthquakes in January 1991
Earthquake archive for Chiba in January 1991: 2 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.7
Strongest magnitude
4.6
Average magnitude
37.8 km
Average depth
Strongest event
4.7
21 Jan 1991
Chiba, Japan
Depth
42.5 km
UTC
21:31:34
Coordinates
34.661, 141.641
Analysis of the recorded activity
During January 1991, 2 earthquakes were recorded near Chiba. Magnitudes ranged from 4.4 to 4.7, with an average of 4.6; depths ranged from 33.0 to 42.5 km, averaging 37.8 km. Activity extended from Monday, January 21, 1991 to Wednesday, January 23, 1991 UTC.
Only 2 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.7
42.5 km
Chiba, Japan
21 Jan 1991 21:31:34 UTC
4.4
33.0 km
Chiba, Japan
23 Jan 1991 18:26:36 UTC