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Lecture11 earthquakes
- 1. Earthquakes
- 4. Continental Drift Animation based on paleomaps from University of Texas Arlington
- 5. Plate tectonics: predicting the future
- 11. Types of folds syncline anticline overturned anticline
- 12. Types of Faults Tension Compression Shear Stretching Shortening Twisting
- 16. 3 Types of Faults
- 17. 3 Types of Faults Divergent Plate Boundaries
- 18. 3 Types of Faults Convergent Plate Boundaries
- 19. 3 Types of Faults Transform Plate Boundaries
- 22. Seismometer
- 23. Seismogram
- 24. Richter Scale Scale is exponential For every increase of 1 in the Richter scale, the wave amplitude increases x10 Exponential decay Exponential growth y = y 0 e -kx y = e kx
- 25. a = 10 M Where M is Richter magnitude, and a is wave amplitude M = log 10 (a) Which is the same as Richter Scale Scale is exponential For every increase of 1 in the Richter scale, the wave amplitude increases x10
- 26. But wave amplitude is not the same as energy released . (see pg 408 in Strahler) E = 10 (4.8+1.5M) = 10 4.8 ·10 1.5M Where M is Richter magnitude, and E is energy released So for every increase of 1 in the Richter magnitude, energy increases x 32 Richter Scale