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Magnitude 7.5 SOUTHERN SUMATRA, INDONESIA

Wednesday, September 30, 2009 at 10:16:09 UTC

Earthquake Density Maps

Earthquake Density

• Average number of Earthquakes per Year per 12,300 km², Magnitude 5 and Greater
  Intermediate Earthquakes: Depth 70-300 km

  
  Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

  

• Average number of Earthquakes per Year per 12,300 km², Magnitude 5 and Greater
  All Depths

  
  Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Global Earthquake Density Maps

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver