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Earthquake Prediction (Long-term (Based on recurrence of events…
Earthquake Prediction
Short-Term
Changes in elevation
Changes in levels of phreatic mantle
Strange animal behaviour
Example
: Liaoing 1975 earthquake
250,000 evacuated
7.3 magnitude
Mid-term
Use apparatuses to measure:
levels of phreatic mantle
Electrical resistivity
Magnetic field
Example
: Parkfield, USA, 1984
Equipment was set up
Earthquake of 6.0 was predicted to happen every 22 years
Long-term
Based on recurrence of events
Distribution of intensity
Models of seismic attenuation
Active vaults are given more attention
Geologic maps are examined
Doesn't offer a 100% guarantee of what will happen
Example
: Puerto Rico seismic activity study