Which risk escalates when a large earthquake impacts a coastal region featuring significant unconsolidated sediment deposits?

💡 Explanation

When a large earthquake impacts unconsolidated sediments, liquefaction occurs because ground shaking increases pore water pressure, reducing effective stress, and soil strength. Therefore liquefaction-induced structural failures result, rather than amplified tsunamis, increased landslides or triggered volcanism which involve other causal factors.

• Which phenomenon limits phytoplankton growth during deep coastal upwelling events?
• Which mechanism amplifies seismic wave intensity in basins with soft sedimentary rock fillings during an earthquake?
• Which outcome occurs when pore pressure rises rapidly during seismic shaking?
• Which morphological consequence results when glacial erosion deepens valleys?
• Which outcome results when a meander erodes through its neck during enhanced streamflow?
• Which mechanism increases the explosive potential when magma's viscosity increases in a volcano?