Terremotos
http://www.usgs.gov/pubprod/
http://earthquake.usgs.gov/eqcenter/helicorders.php
Historic Earthquakes
http://earthquake.usgs.gov/eqcenter/historic_eqs.php
Historico sobre terremotos em todo mundo
http://earthquake.usgs.gov/eqcenter/eqarchives/poster/2003/20031031_image.php
Earthquake Summary
http://earthquake.usgs.gov/learning/
Site sobre [Earthquaker] Terremotos online, todas informações
que se possa imaginar, todo em Inglês.