Which mechanism increases risks associated with lava dome destabilization?

💡 Explanation

Volcanic lava dome collapse is accelerated by vesiculation, as gas bubbles expand rapidly within the lava because this increases internal pressure and leads to fragmentation, therefore causing explosive eruptions, rather than gradual flow.

• Which mechanism causes terraced hillsides in arctic regions experiencing seasonal thaw?
• Which risk increases on gentle slopes underlain by permafrost undergoing active solifluction?
• Which risk increases when constructing a multi-story building foundation on unconsolidated alluvial soil near seismic fault lines?
• Which mechanism interrupts thermohaline circulation when glacial ice melt increases significantly?
• Which risk increases when high geostrophic stream curvature occurs?
• Which process develops steep headwalls in cirque formations during glacial retreat?