Variability of megathrust earthquakes in the world revealed by the 2011 Tohoku-oki Earthquake

Earth, Planets and Space

Table 1. Variability of megathrust earthquakes in the world.

Event	Overriding Plate	Segmentation	Remarks
2004 Sumatra*	Continental Margin	Single	Oblique
1957 Andreanof	Continental Margin	Single	Oblique
1960 Rat Island	Continental Margin	Single	Oblique
1060 Chile	Continent	Single	Cordilleran Orogeny⁷
2010 Chile	Continent	Single	Cordilleran Orogeny
1964 Alaska	Continent	Double	Cordilleran Orogeny
1952 Kamchatka	Continental Margin	Double	Cordilleran Orogeny
2011 Tohoku-oki	Continental Margin	Double	Pacific-type Orogeny⁸

* Boldface indicates a typical end-member characterized by the category of single/double segmentation, orthogonal/oblique subduction and type of overriding plate/orogeny. ⁷: Uyeda (1982); ⁸: Maruyama (1997).