1 / 12

EARTHQUAKES

Explore earthquake predictability, linkages to disasters, human activity impact, and ways to minimize the effects. Learn about earthquake terminology, causes, magnitude, effects, damages, and measures to address the hazard effectively.

caskey
Download Presentation

EARTHQUAKES

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EARTHQUAKES Week 2

  2. EARTHQUAKES What to explore this week: • Predictablity • Linkages • Disastrous consequences • Impact of human activity • Minimizing the impact

  3. Earthquake Terminology

  4. What causes earthquakes? • Elastic Rebound • Sources of stress • Plate Tectonics • Other stresses

  5. Magnitude one per earthquake related to energy released Richter or Moment scale Intensity many for each earthquake measure of effects Mercalli scale Measurement

  6. Damage: Causes • Ground motion • Duration of Shaking • Surface Rupture • Poor building design

  7. Effects • Rupture • Death • Bldg collapse

  8. Effects • Fires • Liquifaction • Landslides

  9. Damage: Key Factors • Amount & duration of shaking • Water content of soil • Population concentration • Building construction • Distance from Epicenter • Depth of focus • Direction of rupture • Material amplification

  10. Addressing the Hazard • Identify areas at risk • Forecast

  11. Addressing the Hazard • Structural adaptations • Warning systems

  12. EARTHQUAKES • In what ways are earthquakes predictable? • To what other hazards are earthquakes linked? • What are the potentially disastrous consequences of earthquakes? • In what ways has human activity made earthquake hazards catastrophic? • How can the hazardous consequences of earthquakes be minimized?

More Related