GEOL 1 Lecture Notes - Lecture 5: Seiche, San Andreas Fault
11 May 2020
School
Department
Course
Professor
Document Summary
If loose material is saturated with water, shaking may cause liquefaction. Water in the soil is squeezed upwards, and it causes the soil to liquefy. In places, water will shoot out of the ground, like a volcano. If the ground liquefies, any buildings on it may settle into the liquefied ground, or fall over. Once the shaking stops, the ground becomes solid again. Shaking of the ground causes water to slosh back and forth as a wave called a seiche. These are really cool in your pool, but can be very dangerous if they occur in a reservoir, and causes water to slosh over the top or weaken the dam. Sometimes called, tidal waves but this is wrong. Result from the seafloor suddenly being dropped or lifted upwards during earthquake. Height is usually <1meter in the open ocean. Once they enter shallow water the can grow heights of 30 meters (100ft)
