University of Wisconsin Milwaukee Department of Geosciences
2/23/04 Samoa Islands Region 6.3 Mw Earthquake
2/23/04 Samoa Islands Region Focal Mechanism
2/23/04 Samoa Islands Region Earthquake Focal Mechanism


Earthquake Details

Seismogram Explanation

Location: Samoa Islands Region

P-wave arrival time: not verified.

Date: February 23, 2004

S-wave arrival time: not verified.

Time: 16:04:46 (UTC);10:04:46 pm (local)

The vertical axis is in units of displacement in centimeters.

Latitude: 14.73 S

The horizontal axis is in units of time in seconds.

Longitude: 175.69 W

The beginning of the file is the origin of the event.

Magnitude: 6.3 Mw

Depth: 30 km

Distance: 98.31 deg (6,788 miles from Milwaukee)


Updated as of by Brett Ketter

Seismograms created using Seismic Analysis Code (SAC; Lawrence Livermore National Laboratory)
Focal mecanisms created using Generic Mapping Tools (GMT; Wessel and Smith; University of Hawaii, Manoa)

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