VIII. Earthquakes

A. Location & geometry
  1. focus (or hypocenter)
  2. epicenter
  3. surface break, fault scarp
B. Measurement
  1. Richter Scale (and newer Moment scale)
    1. measures magnitude, energy released, ground motion
    2. 0 - 9? (upper limit not defined)
    3. each number (integer) represents a 10X increase in ground motion
  2. Mercalli Scale
    1. measures damage done
    2. I-XII
    3. used to asses impact on humans
C. Damage
  1. shaking
  2. ground rupture
  3. fire
  4. tsunami
  5. liquifaction
  6. landslides

D.  Fault Types

  1. normal
  2. reverse & thrust
  3. strike slip

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