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 Indonesian island of Sumatra is located in a highly seismic area of the world. In addition to the subduction zone off the west coast of the island, Sumatra also has a large strike-slip fault, the Great Sumatran Fault also known as Semangko Fault, running the entire length of the island. This fault zone accommodates most of the strike-slip motion associated with the oblique convergence between the Indo-Australian Plate and Eurasian Plate[1] The fault ends in the north just below the city of Banda Aceh,[disputeddiscuss] which was devastated in the 2004 Indian Ocean earthquake. After the December 2004 earthquake, pressure on the Great Sumatran Fault has increased tremendously, especially in the north.[citation needed]

  1. ^ Sieh, K.; Natawidjaja, D. (2000), "Neotectonics of the Sumatran fault, Indonesia" (PDF), Journal of Geophysical Research: Solid Earth, 105 (B12), Wiley: 28, 295–28, 326, Bibcode:2000JGR...10528295S, doi:10.1029/2000jb900120