10 Terms
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Earthquake
Of or pertaining to the natural phenomenon when tectonic plates slide or move causing the Earth's surface also move which causes devastating damage to cities and towns.
Industry: Natural environment
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Earthquake
acceleration
Natural environment; Earthquake
The time rate of change of velocity of a reference point during an earthquake. Commonly expressed in percentage of gravity.
accelerogram
Natural environment; Earthquake
The record from an accelerograph showing ground acceleration as a function of time.
accelerograph
Natural environment; Earthquake
A compact, rugged instrument that records the signal from an accelerometer.
accelerometer
Natural environment; Earthquake
An instrument used to measure acceleration. Used to measure the response of the ground or a structure to shaking in an earthquake.
acceptable risk
Natural environment; Earthquake
The probability of social or economic consequences due to a hazard that is a realistic basis for determining design requirements or taking certain social or economic actions.
active fault
Natural environment; Earthquake
A fault along which displacement has occurred in recent geologic time or along which earthquake foci are located. Active faults are assumed to be capable of producing earthquakes.
aftershock
Natural environment; Earthquake
Additional tremors that occur after the initial earthquake.
