Which risk increases when building foundations sit atop liquefiable soil deposits during an earthquake?

💡 Explanation

When liquefiable soil undergoes seismic shaking, it loses its shear strength because pore water pressure increases, effectively turning solid ground into a liquid, leading to structural collapse due to differential settlement. Therefore settlement and collapse results, rather than resonance, shear failure or brittle fracture which require firmer ground conditions.

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• Which risk increases when differential pressure forces magma into forming volcanic domes underneath a glacier?
• Which risk increases when rapid urbanization constricts a river channel with natural levees?
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• Which risk escalates when a lava dome's exterior cools?