Which risk escalates when floodplains contain deep loess deposits?

💡 Explanation

Soil liquefaction increases because loess has low cohesion and high silt content, meaning the saturated soil loses strength under flood-induced stress, therefore increasing structure instability, rather than slower sedimentation which occurs anyway.

• Which mechanism primarily shapes lakes at convergent plate boundaries forming grabens?
• Which mechanism limits cirque expansion rate as alpine glacial ice melts over decades?
• Which mechanism causes the aridity observed on the leeward side of mountain ranges bordering major river streams?
• Which process primarily causes the formation of alluvial fans at the base of mountain ranges within arid climates?
• Which mechanism causes cirque headwall retreat in mountains?
• Which physical characteristic primarily drives the downwelling of surface water within ocean gyres?