tsunami earthquake

An earthquake that produces an unusually large tsunami
relative to the earthquake magnitude (Kanamori, 1972).
Typical characteristics of tsunami earthquakes include long
rupture durations for the magnitude of the earthquake,
rupture on the very shallow part of the plate interface
(inferred from a location near the trench and a lowangle
thrust mechanism), and high energy release at low
frequencies. They are also slow earthquakes, with slippage
along their faults occurring more slowly than would occur
in normal earthquakes. The last events of this type were in
1992 (Nicaragua), 1996 (Chimbote, Peru), and in Indonesia
in 1994 (Java), 2006 (Java), and 2010 (Mentawai).