Search results
Results From The WOW.Com Content Network
Variation of seismicity with depth across the Sunda Trench subduction zone, low-angle part is the Sunda megathrust – 2007 Bengkulu earthquakes mainshock shown by star. The Sunda megathrust is a fault that extends approximately 5,500 km (3300 mi) from Myanmar (Burma) in the north, running along the southwestern side of Sumatra, to the south of Java and Bali before terminating near Australia. [1]
Plate tectonic setting of Sunda megathrust USGS map showing rupture area of the 1833 quake. The 1833 Sumatra earthquake occurred on November 25 at about 22:00 local time, with an estimated magnitude in the range of 8.8–9.2 M w . It caused a large tsunami that flooded the southwestern coast of the island. There are no reliable records of the ...
The term megathrust refers to an extremely large thrust fault, typically formed at the plate interface along a subduction zone, such as the Sunda megathrust. [4] [5] However, the term is also occasionally applied to large thrust faults in continental collision zones, such as the Himalayan megathrust. [6]
The convergence between the Indo-Australian plate and the Sunda plate is not perpendicular to the plate boundary in this region. Instead, the two plates move at an oblique angle. Most of the convergent strain is accommodated by thrust motion at the plate boundary "megathrust" fault that defines the Sunda Trench.
UTC time: 2010-10-25 14:42:22: ISC event: 15264887: USGS-ANSSComCat: Local date: 25 October 2010 (): Local time: 21:42:22: Magnitude: 7.8 M w: Depth: 12.8 miles (20.6 km) Epicenter: 1] [2]: Fault: Sunda megathrust: Type: Thrust fault: Areas affected: Indonesia: Max. intensity: MMI V (Moderate) [1]: Casualties: 408 dead + 303 missing [3]: The 2010 Mentawai earthquake occurred with a moment ...
The northern section of the Sunda megathrust ruptured over a length of 1,300 km (810 mi). [22] The earthquake (followed by the tsunami) was felt in Bangladesh, India, Malaysia, Myanmar, Thailand, Sri Lanka and the Maldives. [32] Splay faults, or secondary "pop up faults", caused long, narrow parts of the seafloor to pop up in seconds.
UTC time: 2005-03-28 16:09:37: ISC event: 7486110: USGS-ANSSComCat: Local date: 28 March 2005 (): Local time: 23:09:37: Magnitude: 8.6 M w [1]: Depth: 30.0 km (18.6 mi) [1] Epicenter: 1]: Fault: Sunda megathrust: Type: Megathrust: Areas affected: Indonesia: Max. intensity: MMI VIII (Severe) [2]: Tsunami: 3.0 m (9.8 ft) at Simeulue: Landslides: Yes: Casualties: 915–1,314 deaths [3] 340 ...
The Sunda Strait segment has the potential to trigger a large earthquake with a magnitude of 8.7 or higher. Prolonged inactivity in this section and the lack of historical record that might indicate any major subduction-type earthquakes signals the potential of a megathrust event in the Sunda Strait that can affect southern West Java and Sumatra.