earthquakes week 2. earthquakes what to explore this week: predictablity linkages disastrous...
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EARTHQUAKES
Week 2Week 2
EARTHQUAKESEARTHQUAKES
What to explore this week:
Predictablity Linkages Disastrous consequences Impact of human activity Minimizing the impact
What to explore this week:
Predictablity Linkages Disastrous consequences Impact of human activity Minimizing the impact
Earthquake TerminologyEarthquake Terminology
What causes earthquakes?What causes earthquakes?
Elastic Rebound Sources of stress
Plate Tectonics Other stresses
Elastic Rebound Sources of stress
Plate Tectonics Other stresses
MeasurementMeasurement Magnitude
one per earthquake related to energy released Richter or Moment scale
Magnitude one per earthquake related to energy released Richter or Moment scale
Intensity many for each
earthquake measure of
effects Mercalli scale
Intensity many for each
earthquake measure of
effects Mercalli scale
Damage: CausesDamage: Causes Ground motion Duration of
Shaking Surface Rupture Poor building
design
Ground motion Duration of
Shaking Surface Rupture Poor building
design
EffectsEffects Rupture Death Bldg collapse
Rupture Death Bldg collapse
EffectsEffects Fires Liquifaction Landslides
Fires Liquifaction Landslides
Damage: Key
Factors
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
Amount & duration of shaking Water content of soil Population concentration Building construction Distance from Epicenter Depth of focus Direction of rupture Material amplification
Addressing the HazardAddressing the Hazard
Identify areas at risk
Forecast
Identify areas at risk
Forecast
Addressing the HazardAddressing the Hazard
Structural adaptations
Warning systems
Structural adaptations
Warning systems
EARTHQUAKESEARTHQUAKES
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?
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?