Which volcanic hazard increases due to lahar-induced blockage?

💡 Explanation

Catastrophic outburst floods downstream rise because debris flow accumulation reduces channel capacity. This backup causes damming, culminating in catastrophic failure due to increased hydrostatic pressure, rather than affecting lava properties or causing volcano instability.

• Which consequence results when permafrost underlies a high-latitude building?
• Which geological change results when thermal convection weathers a subducting oceanic plate?
• Which effect occurs when offshore winds strengthen persistently?
• Which process dominates when dune migration encounters vegetation?
• Which outcome results from variations in drip-rate affecting stalactites?
• Which risk increases along coastal Arctic regions due to thermokarst landscape formation?