Historic Earthquakes

Magnitude 7.6 SCOTIA SEA
2003 August 04 04:37:20 UTC

World Location
Regional Location

The earthquake occurred on the boundary between the Scotia plate and the Antarctic plate. In the epicentral region, the Scotia Sea plate is moving to the west-northwest with respect to the Antarctic plate. The relative velocity between the two plates is not well determined but is likely to be about 1 cm/y. The overall boundary is a transform-fault boundary, involving predominantly strike-slip faulting, although prior normal-faulting earthquakes have also occurred.