Which mechanism increases lahar hazard during and after stratovolcano eruption sequences?

💡 Explanation

When a stratovolcano with glaciers erupts, rapid glacier melting destabilizes the unconsolidated volcanic ash deposits on steep slopes because meltwater adds weight and reduces friction. Therefore, glacier melting destabilizing ash deposits increases lahar hazard, rather than flow generating convection, heat altering soil, or uplift modifying drainage.

• Which effect causes desertification on the leeward side of mountain ranges?
• Which process primarily controls sediment deposition and layering at the head of a fjord?
• Which consequence develops when intense rainfall saturates unconsolidated tephra deposits?
• Which hazard dramatically increases when stratospheric tephra accumulates?
• Which process primarily maintains the anticlockwise circulation of the North Pacific Subpolar Gyre?
• Which consequence results from the impact of ocean eddies on coastal upwelling?