Which risk increases when a dam intersects an active strike-slip fault zone?

A)Induced seismicity due pressure variation✓

B)Increased weathering of concrete aggregate

C)Accelerated reservoir siltation processes

D)Elevated methane production in sediment

💡 Explanation

Induced seismicity increases the likelihood of dam failure because reservoir impoundment increases pore pressure, which reduces the effective stress on the fault, reducing its resisting strength; therefore induced seismicity is a risk, rather than chemical weathering, which is considerably slower.

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Which risk increases when a dam intersects an active strike-slip fault zone?

💡 Explanation

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