Which risk increases around volcanic lava domes during effusive eruptions?

💡 Explanation

Pyroclastic flows are more likely when unstable lava domes collapse because gravitational instability causes dome material fragmentation, propagating outward as high-speed flows; therefore the risk increases through gravitational potential rather than meltwater dynamics.

• Which mechanism causes the intertropical convergence zone rising where air is converging at the boundary between Hadley cells?
• Which deformation results when descending oceanic lithosphere undergoes dehydration?
• Which geomorphic consequence primarily results when the depositional boundary moves downwind across landscapes?
• Which effect results when the Earth's rotation deflects moving air masses?
• Which long-term outcome results from consistent bioturbation activity?
• Which risk increases when an earthquake occurs in a region with unconsolidated, water-saturated sediment?