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Volcano Islands, Japan Region 7.4 Mw Earthquake Recorded at UWM
Volcano Islands, Japan Region 7.4 Mw Earthquake Focal Mechanism
Volcano Islands, Japan Region 7.4 Mw Earthquake Focal Mechanism

Earthquake Details

Location: Volcano Islands, Japan Region
Date: September 28, 2007
Time: 13:38:58 UTC; 8:38:58 am CDT.
Latitude: 21.98 N
Longitude: 142.68 E
Magnitude: 7.4 Mw
Depth: 263 km
Distance: 100.29 deg (6,925 miles from Milwaukee)

Seismogram Explanation

Pdiff-wave arrival time: 13:52:14 UTC; 8:52:14 am CDT.
Sdiff-wave arrival time: 14:03:26 UTC; 9:03:26 am CDT.
SKS-wave arrival time: 14:02:26 UTC; 9:02:26 am CDT.
SP-wave arrival time: 14:04:56 UTC; 9:04:56 am CDT.
The vertical axis is in units of displacement in centimeters.
The horizontal axis is in units of time in seconds.
The beginning of the file is the origin of the event.