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nounshaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity
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Definition that contains seism
- quake shake with seismic vibrations
- tremor shake with seismic vibrations
- seismological of or concerned with seismology
- seismologic of or concerned with seismology
- richter scale a logarithmic scale of 1 to 10 formerly used to express the magnitude of an earthquake on the basis of the size of seismograph oscillations
- seiche a wave on the surface of a lake or landlocked bay; caused by atmospheric or seismic disturbances
- mercalli scale a scale formerly used to describe the magnitude of an earthquake; an earthquake detected only by seismographs is a I and an earthquake that destroys all buildings is a XII
- seismogram the graphical record of an earth tremor made by using a seismograph
- moment magnitude scale a logarithmic scale of 1 to 10 (a successor to the Richter scale) that enables seismologists to compare the energy released by different earthquakes on the basis of the area of the geological fault that ruptured in the quake