Which outcome occurs when intense rainfall saturates volcanic ash deposits?

💡 Explanation

A lahar is triggered because intense rainfall mobilizes loose volcanic ash via soil particles' leaching, creating a dense, rapidly flowing mudflow known as a debris flow; therefore, lahars form, rather than pyroclastic flows decreasing alone affecting slopes.

• Which risk increases when unconsolidated coastal sediment undergoes differential compaction?
• Which outcome occurs when long-term permafrost thaw destabilizes a subsea methane hydrate deposit?
• Which outcome occurs when intensive agriculture reduces soil's buffering capacity?
• Which mechanism initiates the creation of a cirque on a mountainside subject to glaciation?
• Which volcanic chain development results from divergent plate thinning?
• Which consequence results when increased freshwater input disrupts thermohaline dynamics in a subpolar gyre?