Which outcome occurs when tephra accumulation rapidly melts glacial ice?

💡 Explanation

Lahars result because increased water saturation and sheer weight of tephra initiates debris flow; therefore, very mobile mudflows increase, capable of traveling long distances, rather than only affecting nearby pyroclastic activity or lava cooling rates.

• Which outcome reduces marine primary productivity when coastal upwelling weakens during an El Niño event?
• Which mechanism causes 'staircase' valley features when glacial cirques truncate a pre-existing stream valley?
• Which event strongly promotes accelerated karst topography development?
• Which mechanism limits lake formation when downcutting rate exceeds sediment deposition in a fluvial valley?
• Which result arises at cave entrances with increased airflow?
• Which outcome occurs when high-viscosity silica lava flows?