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Geography

Which mechanism causes increased crustal deformation during megathrust earthquakes?

A)Elastic rebound during fault rupture
B)Mantle convection reducing lithospheric friction
C)Isostatic subsidence following glacial melting
D)Thermal expansion of subsurface magma

💡 Explanation

Elastic rebound causes surface displacement because accumulated strain releases during rupture; therefore deformation increases, rather than decreases from convection or isostatic adjustment or thermal stresses isolated in the mantle.

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