Which risk prominently increases following intense pyroclastic flow events?

💡 Explanation

Debris flow initiation is the correct answer because pyroclastic flows deposit massive volumes of weakly consolidated material on steep slopes; therefore, intense rainfall can trigger rapid debris flows (lahars), rather than geothermal increase, glaciation, or atmospheric cooling.

• Which mechanism reduces primary productivity in the eastern Pacific Ocean during an El Niño event?
• Which outcome results when a glacial cirque degrades?
• Which mechanism increases flood risk downstream of a newly formed oxbow lake?
• Which hydrogeologic process primarily dictates groundwater salinity stratification within endorheic basin lakes?
• Which process primarily causes cirque formation beneath a glacier terminus?
• Which climatic response increases when weakened trade winds reduce upwelling during an El Niño event?