...
A map of the earthquake swarm can be found at http://fromtheold.com/news/google-earth-snapshot-shows-extent-earthquake-swarm-chile-2010030216749.html. The center of the 8.8 magnitude earthquake was about 200 miles S from Santiago of the coast near Concepcion. Santiago is not shown on this map, it is about 100km ESE of Valparaiso.
Another case study of the effect of the Chilean Earthquake on the Internet as measured using BGP can be found at http://www.niclabs.cl/terremoto/en/start