Great Sumatran fault

Great Sumatran fault
Semangko Fault
LocationSumatra
CountryIndonesia
Characteristics
Length~1650-1900km
Tectonics
PlateAustralian plate, Eurasian plate
Earthquakes24 June 1933, 19 Sept 1936, 1943 Alahan Panjang earthquake, 2 April 1964, 1994 Liwa earthquake, March 2007 Sumatra earthquakes
Typestrike-slip fault

The Great Sumatran fault, also known as Semangko fault, is a large strike-slip fault running the entire length of the island of Sumatra. This Indonesian island is located in a highly seismic area of the world, including a subduction zone off the west coast of the island.

The Great Sumatran fault zone accommodates most of the strike-slip motion associated with the oblique convergence between the Indo-Australian plate and Eurasian plate The fault ends in the north near the city of Banda Aceh, which was devastated in the 2004 Indian Ocean earthquake.

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