University of Wisconsin Milwaukee Department of Geosciences
12/26/04 Off W. Coast of Nothern Sumatra, Indonesia 9.0 Mw Earthquake
12/26/04 Off W. Coast of Nothern Sumatra, Indonesia Earthquake Focal Mechanism
12/26/04 Off W. Coast of Nothern Sumatra, Indonesia Focal Mechanism
Drumplot Recording East, North and then Vertical Component


Earthquake Details

Seismogram Explanation

Location: Off W. Coast of Nothern Sumatra, Indonesia

Pdiff-wave arrival time: Not verified.

Date: December 26, 2004

Sdiff-wave arrival time: Not verified.

Time: 00:58:50 (UTC); 6:58:50 pm (local 12/25/04)

The vertical axis is in units of displacement in centimeters.

Latitude: 3.30 N

The horizontal axis is in units of time in seconds.

Longitude: 95.78 E

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

Magnitude: 9.0 Mw

This is the largest earthquake in 40 years and the 5th largest ever recorded.

Depth: 10 km

This earthquake produced a deadly tsunmai that killed over 150,000 people.

Distance: 133.71 deg (9,233 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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