Which failure mode triggers a tsunami following a megathrust earthquake?

💡 Explanation

The elastic rebound mechanism causes uplift of the seafloor at subduction zones during megathrust events, because accumulated strain energy is suddenly released by fault rupture and uplift. Therefore, a tsunami is generated, rather than triggered by slower creep or resonance effects.

• Which outcome accelerates when thawing permafrost increases soil saturation on a hillside?
• Which outcome occurs when persistent katabatic winds impact rock surfaces in an Antarctic polar desert?
• Which outcome occurs when lithospheric plates subduct irregularly?
• Which outcome occurs when pyroclastic flow interacts cryosphere environments?
• Which effect increases when polar vortex cells weaken?
• Which outcome results when calcium carbonate rock undergoes karstic dissolution?