Which risk escalates when ephemeral stream discharge exceeds capacity on arid-region alluvial fans?

💡 Explanation

Debris flow amplification follows excess discharge that mobilizes unstable sediment; the mechanism is positive feedback. Because of this, initial movement trigger further failures leading to larger flows; not stable sedimentation therefore.

• Which process causes accelerated crustal subsidence during large stratovolcano formation?
• Which outcome occurs when irrigation in arid climates mobilizes soluble salts?
• Which consequence results when katabatic winds encounter a strong temperature inversion near a valley floor?
• Which effect causes deflection of prevailing winds due to Earth's rotation?
• Which secondary effect is likely when liquefaction occurs due to earthquake shaking in regions with levees?
• Which ecological consequence results when a persistent high-pressure system reduces coastal upwelling along the California coast?