Which seismic effect increases liquefaction risk in unconsolidated sediment deposits during earthquakes?

💡 Explanation

When Rayleigh waves pass through unconsolidated sediments, oscillation causes increased pore water pressure because grain structure destabilizes, reducing effective stress between particles leading to liquefaction. Therefore, surface oscillation poses an increased risk, rather than intensity scaling/wave arrival phenomena, which do not directly alter soil properties.

• Which circulation effect causes increased precipitation on the windward side of mountain ranges in coastal regions?
• Which mechanism primarily causes an oxbow lake to eventually become a swamp?
• Which mechanism accelerates surface deformation when permafrost thawing induces solifluction on an Arctic slope with ice wedges?
• Which phenomenon primarily causes the curved trajectory of prevailing winds across different latitudes?
• Which increased risk arises when rapid tectonic uplift narrows the neck of an oxbow lake?
• Which risk increases when transverse dune migration accelerates?