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Cards In This Set
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Where do most (80% of earthquakes occur in the world)?
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Circum-Pacific Belt.
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What are some of the hazards associated with earthquakes?
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Ground shaking
Fire Tsunami Aftershocks Landslides Panic |
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What earthquake hazard is the most destructive?
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Earth shaking
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What is resonance? How does it affect strutures?
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When seismic waves travel through sediment they can be magnified several times. This can be very destructive.
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What is liquefaction?
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Seismic waves travelling through soil can make the soil behave like a liquid. This happens mostly in fill and water saturated sediment.
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How is a tsunami generated?
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A normal or reverse fault ruptures driving the foot or hanging wall up. Water rushes away from the shoreline to compensate for the change in volume but then rushes back.
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What are some the characteristics of interplate quakes?
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1) Faults are deeply buried and do not break the surface
2) Rocks of continental interior are stronger and transmit the seismic waves greater distances 3) Intraplate quakes are concentrated in areas of failed continental rifts. |
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What are the 3 methods that can be applied to earthquake prediciton?
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1) statistical
2) geophysical 3) geological |
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What are some precursors to an earthquake?
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Ground tilt
earth magnetism conductivity radon levels P wave velocity |
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What is the most important tools when it comes to predicting earthquakes?
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P-wave veloctiy.
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What are the 4 major earthquakes factorss affecting humans?
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1) Magnitude of earthquake
2) Density of the population 3) Degree of preparedness 4) Timing of the earthquake. |
