Which risk increases for infrastructure built on an alluvial fan in a tectonically active region experiencing heavy seasonal rainfall?

💡 Explanation

The risk of increased avulsion frequency rises because increased sediment deposition and channel instability on the fan surface due to tectonic uplift changes river flow paths. Therefore, rivers shift suddenly rather than remaining stable, especially under heavy rainfall conditions.

• Which consequence results when eustatic sea-level rise breaches barrier island dunes?
• Which formation process dominates when wave-cut platforms erode isolated headlands?
• Which landform results when wind deflation exposes bedrock?
• Which outcome occurs when crustal subduction ceases at depth?
• Which primary effect results when large earthquake ruptures a subsea megathrust boundary with very shallow hypocenter?
• Which phenomenon causes deflection apparent along trade routes?