Earthquakes Hazards and Tsunamis

1
Earthquakes Hazards and Tsunamis
2
Earthquake Damage

• Can cause the following
• Landslides
• Avalanches
• Tsunamis
• Change in landscape
• All are deadly and cause mayhem

3
Types of Soil Conditions Loose Soil vs. Rock

• Loose Soil
• Liquefaction Soil is turned into liquid mud.
  Can cause landslides
• Transmits seismic energy violently.
• Building can sink into the loose soil.
• http//www.youtube.com/watch?vKLZFlnND0hA

4

• Rock
• Transmits seismic energy poorly.
• Less movement of buildings on bedrock.

5
Aftershock

• An earthquake that occurs after larger
  earthquakes in the same area.
• Can occur hours, days, or even months later.

6
Tsunami

• Earthquake jolts the ocean floor, plate movement
  causes the ocean floor to rise slightly and push
  water out of its way.
• Causes Water Displacement.
• See Tsunami Video/Demo
•  

7
Creating an Earthquake-Safe Building

• Purpose
• Construct a building that can withstand P, S, and
  Surface waves.