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 outcome is most directly driven where desert deflation removes fine sediments?
• Which phenomenon results from disruption of Hadley cell circulation patterns?
• Which outcome occurs when considerable tephra accumulates in drainage networks?
• Which outcome occurs when freeze-thaw cycles saturate the active layer in an area undergoing solifluction?
• Which outcome occurs when volatiles rapidly exsolve during magma ascent?
• On coastlines with varied rock resistance, which mechanism explains sea stack formation?