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 atmospheric effect causes deflection of prevailing winds forming distinct east-west bands?
• Which risk increases following a catastrophic levee breach due to overtopping during an extreme flood event?
• Which effect increases when coastal upwelling intensifies parallel to the shoreline above a fishing ground?
• Which consequence typically arises from fine-grained pyroclastic eruptions entering stratospheric air currents?
• Which process limits nutrient availability despite large oceanic gyre circulation?
• Which risk increases when an alluvial channel experiences increased sediment load during flash flooding?