Which consequence results from pyroclastic flow deposition during lahar formation?

💡 Explanation

Increased sediment supply into streams occurs; the pyroclastic materials are unconsolidated and easily eroded promoting debris flows, triggering increased discharge; this mechanism leads to high sediment load input, because pyroclastic material is highly erodible; therefore sediment-rich flows occur, rather than increased floodplain fertility.

• Downstream fining occurs in alluvial fans because of sediment transport which leads to what outcome?
• Which outcome results when permafrost thawing causes downslope creep?
• Which risk increases when water table drawdown lowers buoyant support in subterranean karst regions overlying urban infrastructure?
• Which pedologic outcome results with intense grassland bioturbation?
• Which mechanism primarily causes stratovolcanoes to exhibit explosive eruptions with significant pyroclastic flow?
• Which mechanism alters regional rainfall patterns associated with changes deep-ocean thermohaline circulation?