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1. Megathrust Earthquake

   Linked via "megathrust interface"

   Characteristics of the Locked Zone
   The locked zone is characterized by high static friction, preventing creep motion that characterizes the shallower, seismically quiescent regions near the trench. Geophysical studies utilizing active-source seismic reflection have mapped the megathrust interface, revealing distinct asperities-patches of extremely high [shea…

2. Subduction Zone

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   The angle and velocity of the descending lithospheric slab are crucial factors influencing the kinematics of the boundary. The angle of subduction is commonly regulated by the composition and thermal state of the overriding plate. Continental crust, being generally less dense, forces a shallower angle of descent, often resulting in broader zones of crustal thickening and increased surface deformation away from the trench. Conversely, young, hot oceanic lithosphere tends to sink more steeply, a process often associated with rapid …