Which risk increases when lava flows with high viscosity obstruct volcanic gas escape?

💡 Explanation

Plug formation is elevated because the mechanism of viscous drag prevents gas release, therefore causing pressure build-up inside the volcano and hardened obstructions, rather than resulting in decreased eruptions or flank instability influenced by alternative conditions.

• Which outcome results when a prolonged regional drought intensifies?
• Which outcome is accelerated when groundwater discharge increases near coastlines?
• Deeper cave excavation risks increased rockfalls because of which mechanism?
• Which feature characterizes glacial cirques formed in locations with significant permafrost?
• Which risk increases when intense rainfall saturates alluvial fan deposits?
• Which phenomenon causes lahars with destructive debris flows?