A great earthquake was noted at 23:09:36 hrs, local time at epicentre, on Monday, March 28, 2005. All the details of the earthquake that occurred, Earthquake off the west coast of northern Sumatra. Questions?Data collected over the subduction zone offshore of Sumatra, Indonesia, has enabled the top of the downgoing plate to be mapped across a long-lived segment boundary at one end of the rupture zone. Seismic recordings give the earthquake a magnitude of about 8.7, and effects were felt as far away as Bangkok, Thailand, a distance of 1000 km . A great earthquake with a Moment Magnitude 8.7 struck off the coast of Western Sumatra just south of the region where the great earthquake of 26 December 2004 (Moment Magnitude 9) triggered a devastating tsunami which left about 300,000 people dead or missing in nearly a dozen nations in Africa and Southeast Asia. New geophysical data show that fault slip during the March 2005 magnitude 8.7 (Mw) earthquake off the west coast of northern Sumatra, Indonesia (also …
Seismic reflection data, similar to that used to find oil reserves, gives a detailed image of the shape of the downgoing plate. The magnitude was 8.7 on the Richter scale and located in NORTHERN SUMATRA, INDONESIA. The topographic high appears to strengthen the plate boundary, and only very large earthquakes would break through this barrier.New geophysical data show that fault slip during the March 2005 magnitude 8.7 (Mw) earthquake off the west coast of northern Sumatra, Indonesia (also referred to as the Simeulue-Nias earthquake), was stopped by the topography on the downgoing plate.Earthquakes in subduction zones, where one tectonic plate is forced beneath another, usually break only a part of the plate boundary fault. Keep up to date with the latest news from ScienceDaily via social networks:Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. In that report, Dr. Richard Meehan of Stanford University concluded that the “Dairi Mine is located in one of the highest risk areas in the world,” near the Sumatra subduction megathrust which produced in 2004 and 2005 earthquakes of magnitude 9 and 8+ respectively. All the details of the earthquake that occurred, Earthquake off the west coast of northern Sumatra. The area is 200 km west of Sibolga, Sumatra, or 1400 km northwest of Jakarta, roughly halfway between the islands of Nias and Simeulue. The ultimate goal is to save lives and reduce property damage from future tsunami disasters. Have any problems using the site? The March 28, 2005, M 8.6 northern Sumatra, Indonesia, earthquake occurred as the result of thrust faulting on the interface of the Australia plate and Sunda plate and was caused by the release of stresses that develop as the Australia plate subducts beneath the overriding Sunda plate. Topography on the top of the downgoing plate has often been suggested a cause of this segmentation, but there are few examples where this topography is as well-known as well as the details of earthquake rupture.This survey by Timothy Henstock and colleagues spans a complex segment boundary zone between the southern termination of the Mw 8.7 earthquake and the northern termination of a major 1797 earthquake that was partly filled by a Mw 7.7 event in 1935.
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