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Geography

Near strike-slip boundaries, what hazard increases given elevated pore water pressure?

A)Induced earthquake magnitude
B)Transform fault plate velocity
C)Subduction zone sediment thickness
D)Oceanic crust melting temperature

💡 Explanation

Earthquake magnitude grows when elevated pore pressure reduces the effective normal stress, weakening the fault; this is known as effective stress principle. Because fault slip then occurs with less resistance, seismic energy dramatically increases, therefore, higher magnitudes result rather than plate/sediment changes.

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