Causes of earthquake damage can include: Shaking Liquefaction
Aftershocks Tsunamis
Slide 4
Shaking http://youtu.be/FW-TkpvKPl0 Produced by seismic waves -
most violent Kilometers away from the epicenter S Waves (side to
side & up and down motion) Damage: Land slides or avalanches
Destruction to buildings, roads and pipes Shaking depends on type
of rock and soil
Slide 5
Aftershocks Small earthquake that occurs after a larger one
Earth settling Can take place hours, days or months later
Slide 6
Tsunamis Earthquake Water displaced forms a wave carrying
energy (low height in the ocean) Closer to the beach it begins to
pull water and creates the "wall of water"
Slide 7
Liquefaction Shaking turns loose soft soil into liquid mud Soil
must be full of moisture "Quicksand" http://youtu.be/4Uwxr42JqYQ
http://youtu.be/RJCidfj-x9M
Slide 8
To reduce earthquake damage, new buildings must be made
stronger and more flexible.
Slide 9
Seismic Safe Buildings Base Isolators Tension Ties Cross Ties
Dampers Flexible Pipes