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The earthquakes are caused by slip along the thrust fault that forms the contact between the two plates. These interplate earthquakes are the planet's most powerful, with moment magnitudes (M w) that can exceed 9.0. [1] [2] Since 1900, all earthquakes of magnitude 9.0 or greater have been megathrust earthquakes. [3]
M w [59] Doublet earthquake rupturing an outer rise normal fault and the megathrust. [60] 2009 Samoa earthquake and tsunami: 27 February 2010 03:34 (local time) Maule Region, Chile: 550 8.8 M w [61] Including 25 missing. 2010 Chile earthquake: 11 March 2011 14:46 (local time) Tohoku region, Japan: 22,312 9.1 M w [62] Including 2,553 missing.
Download as PDF; Printable version; ... Megathrust earthquakes (6 C, 2 P) B. ... Pages in category "Types of earthquake"
Megathrust earthquakes are the most powerful earthquakes known to occur, and can exceed magnitude 9.0, which releases 1,000 times more energy than magnitude 7.0 and 1 million times more energy than a magnitude 5.0. [18] [19] [20] They occur when enough energy (stress) has accumulated in the "locked" zone of the fault to cause a rupture. The ...
Megathrust earthquakes in the United States (1 C, 2 P) Pages in category "Megathrust earthquakes in North America" The following 3 pages are in this category, out of 3 total.
The Nankai megathrust has five distinct segments (A–E) that can rupture independently, [2] [3] the segments have ruptured either singly or together repeatedly over the last 1300 years. [4] Megathrust earthquakes on this structure tend to occur in pairs, with a relatively short time gap between them.
For example, a magnitude 7.0 quake in Salta, Argentina, in 2011, that was 576.8 km deep, had a maximum felt intensity of V, [19] while a magnitude 2.2 event in Barrow in Furness, England, in 1865, about 1 km deep, had a maximum felt intensity of VIII. [20] The small table is a rough guide to the degrees of the MMI scale.
Note: earthquakes included for this category are quakes along subduction zones of 8.0 magnitude or greater. Subcategories This category has the following 6 subcategories, out of 6 total.
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