Which mechanism causes building foundation liquefaction during seismic activity in coastal areas?

💡 Explanation

During seismic activity, increased pore water pressure between soil particles occurs because the shaking compacts the soil, transferring stress to the fluid, greatly reducing friction at grain interfaces, causing the soil to behave like a liquid. Therefore pore water pressure increase reduces effective stress, rather than consolidation, uplift, or fracturing which require slower, geological processes.

• Which outcome primarily occurs from long-term sediment displacement into a glacial lake?
• Which outcome occurs when wind surpasses threshold for deflation?
• Which regional drought risk increases during El Niño?
• Which mechanism causes meandering stream formation across flat plains undergoing regional uplift?
• Which mechanism causes stratification in deep glacial lakes during spring thaw?
• Which sedimentation outcome occurs when a fjord's sill restricts water exchange leading to anoxia?