1. GEOL 108 - Crises of a Planet Lab 3 - Earthquake Hazards Sept. 16 - 21, 2012 Department of Earth Sciences

2. REVIEW | 2 QUIZ 1 REVIEW

3. Department of Earth Sciences REVIEW | 3 QUIZ 1 REVIEW Draw and label the following features in a single sketch: Mid-ocean ridge, trench, subduction zone, oceanic lithosphere, continental lithosphere, mountains/volcanoes. Draw arrows showing direction of plate movement. http://www.tulane.edu/~sanelson/geol204/eqhazards&risks.htm

4. Department of Earth Sciences EARTHQUAKES | 4 LAB 3 - EARTHQUAKES - KEY CONCEPTS Understand the effects of shaking on various objects Underlying geology changes seismic wave properties Liquefaction

5. Department of Earth Sciences EARTHQUAKES | 5 SEISMIC WAVES Release of accumulated energy leads to quake Energy travels in waves of vibration −Body waves P-waves - primary S-waves - secondary −Surface waves Love Rayleigh

6. Department of Earth Sciences EARTHQUAKES | 6 SEISMIC WAVES Damage usually highest from waves of highest amplitude From the seismogram, which wave is most destructive?

7. Department of Earth Sciences EARTHQUAKES | 7 BEDROCK TYPE AND INTENSITY Video removed for size http://www.youtube.com/watch?v=-bzQM0j3W8c

8. Department of Earth Sciences EARTHQUAKES | 8 LIQUEFACTION During earthquakes, saturated sediment can flow like a liquid http://www.tulane.edu/~sanelson/geol204/eqhazards&risks.htm