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Large numbers of earthquakes of smaller magnitude occur very regularly due to the meeting of major tectonic plates in the region. Based on the records of the USGS, Indonesia has had more than 150 earthquakes with magnitude > 7 in the period 1901–2019.
Megathrust earthquakes in Sumatra (1 C, 7 P) Pages in category "Megathrust earthquakes in Indonesia" The following 8 pages are in this category, out of 8 total.
Historically, great or giant megathrust earthquakes have been recorded in 1797, 1833, 1861, 2004, 2005 and 2007, most of them being associated with devastating tsunamis. Smaller (but still large) megathrust events have also occurred in the small gaps between the areas that slip during the larger events, in 1935, 1984, 2000 and 2002. [2]
On 26 December 2004, at 07:58:53 local time , a major earthquake with a magnitude of 9.2–9.3 M w struck with an epicentre off the west coast of Aceh in northern Sumatra, Indonesia. The undersea megathrust earthquake, known by the scientific community as the Sumatra–Andaman earthquake, [8] [9] was caused by a rupture along the fault between ...
The first earthquake occurred at 11:10:26 UTC (18:10 local time) on 12 September 2007, and was an 8.4 M w earthquake on the moment magnitude scale. [2] It had a focal depth of 34 km, at , about 130 km southwest of Bengkulu on the southwest coast of Sumatra, Indonesia, and some 600 km west-northwest of Indonesia's capital city, Jakarta
M w [38] One of the largest earthquake in recorded history. 1963 Kuril Islands earthquake: 27 March 1964 17:36 (local time) Prince William Sound, Alaska: 131 9.2 M w [39] The second largest earthquake in recorded history. 1964 Alaska earthquake: 3 February 1965 19:01 (local time) Rat Islands, Alaska: 0 8.7 M w [40] One of the largest earthquake ...
The 1797 Sumatra earthquake occurred at 22:00 local time on 10 February. [1] It was the first in a series of great earthquakes that ruptured part of the Sumatran segment of the Sunda megathrust . It caused a damaging tsunami that was particularly severe near Padang , where a 150–200 t (170–220 short tons) English ship was driven 1 km (0.62 ...
The thrust faults responsible for megathrust earthquakes often lie at the bottom of oceanic trenches; in such cases, the earthquakes can abruptly displace the sea floor over a large area. As a result, megathrust earthquakes often generate tsunamis that are considerably more destructive than the earthquakes themselves.