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Geography

Which risk increases when a megathrust fault experiences creep?

A)Episodic tremor and slow slip
B)Increased methane clathrate formation
C)Localized sea level depression
D)Enhanced biogenic silica production

💡 Explanation

Episodic tremor and slip (ETS) risk increases because fault creep episodes can trigger ETS events involving the aseismic slip and associated tremors, rather than a significant earthquake. Therefore, option A is the result of fault creep rather than others.

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