Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone

We discussed the peculiarities of seismic cycle in Aleutian subduction zone, characterized by an oblique setting. It was shown that orientation plate convergence vector relative to zone axis can have a significant impact on preparation and occurrence largest earthquakes zones. In particular, from analysis activity occurring western part island arc, it found cycles here are shorter than eastern arc. revealed strongest earthquakes, repeating same areas differ both magnitude length fault zone. Taking into account setting, we proposed keyboard model megathrust generation as mechanism potentially capable explaining reduction duration noticeable differences spatial extent localization zones events with similar magnitudes segment half