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 outcome occurs when increased subsurface irrigation increases bioturbation?
• Which feedback to nutrient upwelling results when benthic bioturbation decreases?
• Which outcome occurs when a meandering stream erodes laterally until encountering a resistant geological formation beneath an oxbow?
• Which mechanism limits lateral spreading forces in effusive volcanic dome formation?
• Which process primarily weakens limestone karst formations during heavy rainfall?
• During which season does thermohaline deep ocean circulation most strongly redistribute heat toward polar regions?