vurassist.blogg.se - Sumatera maps

major strike slip faults in the overriding plate of the subduction zone.īase map of the Sumatra subduction zone showing seismicity associated with the 2004 Sumatra-Andaman earthquake.Figure based on info from the USGS Earthquake Hazards Program.

the epicenter of the Decemmainshock, and.

the interplate thrust where it interesects the sea floor along the Sunda trench,.

The map, based on info from the USGS Earthquake Hazards Program, shows:

Where the interplate thrust intersects the sea floor is marked by the Sunda trench that can traced along an arc from Burma in the north to Java in the south. This fault lies below the southwestern part of Sumatra and the Andaman Islands. The interface between the two plates results in a large fault, termed an interplate thrust or megathrust.

The DecemM=9.1 Sumatra-Andaman earthquake occurred along a tectonic subduction zone in which the India Plate, an oceanic plate, is being subducted beneath the Burma micro-plate, part of the larger Sunda plate. This figure is taken from the online edition of This Dynamic Earth General diagram of an oceanic subduction zone. Sumatra and the Andaman Islands are part of an island arc.