Earthquake Hazards and Predictions Flashcards
What are the three types of hazards?
- primary
- secondary
- Tertiary
______ hazards are the hazards associated most directly with the natural disaster
primary
Primary hazards are associated
_______ with the natural disaster
directly
_______ hazards result from primary hazards
secondary
what is a primary hazard of an earthquake?
- shaking of ground
- causes collapse of structures
What are secondary hazards of earthquakes?
- landslides
- fires
- Ground liquefaction
- Tsunamis
which type of hazard resulting from an earthquake causes the most damage and causalities?
secondary hazards
What is liquefaction?
when soil behaves as a liquid because it is shaking
Can we predict earthquakes, can we look at the foreshock sequence and see if there is a bigger one coming?
No, as of right now there is no reliable short term prediction
It is hard to tell that earthquakes are ______ until you have the big one
foreshocks
Sometimes the fact that there are numerous small earthquakes along the fault is a good sign which would signal that the fault is releasing ______ in numerous small earthquakes instead of one big one
energy
what is paleoseismology?
the study of ancient earthquakes through geologic evidence
why are numerous small earthquakes sometimes a good sign?
good sign which would signal that the fault is releasing energy in numerous small earthquakes instead of one big one
long-term forecasting is based on the hypothesis that…
earthquakes are recurring events
long-term forecasting is based on the understanding of…
tectonic disturbances
