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

            Reinforce homes

            Construction Methods

                        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:

            Drop to the floor, cover head, hold on to cover.

 Fault Monitoring

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