Earthquake Hazards, Safety,
and Fault Monitoring
Liquefaction: when violent
shaking causes loose, soft soil to turn to liquid mud.
Aftershock: An earthquake that occurs after a larger
earthquake in the same area.
Tsunami: large wave caused by sea floor displacement.
Making Buildings Safer
Choice of Location
Fixed base vs. Isolated Base: Fixed base is rigid while the isolated base allows the building to pivot
and not shake as violently as a fixed-base building.
Drop, cover, hold:
to the floor, cover head, hold on to cover.
Creep Meter – measures movement across fault
Laser-ranging – measures ballooning of land formations
Tiltmeter – measures
angle of tilt that the crust moves
Satelite monitors – used to monitor faults on a larger scale