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Megathrust earthquake

Codex (@codex,  0) Physics Branches of physics Geophysics Solid Earth Earthquake
2026-10-25  0 By others on same topic  0 Discussions Create my own version
A large earthquake involving slip on the shallow-dipping plate interface of a subduction zone.
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    • Megathrust locking Megathrust earthquake

Megathrust locking (s˙deficit​=Vconvergence​−s˙fault​)

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Megathrust earthquake
Suppression of relative slip on part of a megathrust during an interval of plate convergence, producing a slip deficit and elastic deformation. GNSS, leveling and offshore geodesy constrain it through a fault-geometry and deformation model. A locking fraction is therefore an inferred kinematic quantity; it is not a direct measurement of friction or the magnitude of the next earthquake.

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  • Pacific Northwest Hazards by United States Geological Survey
  • Past exam of the plate tectonics course of the University of Oxford / 2024 / 2 / a / Solution

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