Which effect occurs when a major earthquake ruptures a strike-slip fault zone beneath a large dam?

💡 Explanation

When an earthquake ruptures a strike-slip fault under a dam, ground shaking occurs because seismic waves propagate through the earth, causing loosely packed, waterlogged sediments in the dam's foundation to lose strength through liquefaction. Therefore foundation failure is likely, rather than seismicity amplification etc. which depend on slower effects.

• Which mechanism causes the highest stream discharge rates in mountainous regions dominated by glacial ice?
• Which mechanism intensifies volcanic eruption explosivity when subducting slab dehydrates?
• Which risk increases when a city's sewage pipes cross a strike-slip fault?
• Which shift occurs in coastal upwelling patterns along South America's western coast during an El Niño event?
• Which mechanism causes crustal thickening when thrust faulting occurs in collisional mountain belts?
• Which risk increases when thawing permafrost destabilizes coastal cliffs near settlements?