Seismology

Seismology

The study of earthquake, seismic sources, and wave propagation through the Earth.

Industry: Earth science

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Seismology

Hertz

Earth science; Seismology

The unit of frequency equal to 1 cycle per second, or 2 PI radians per second.

S wave

Earth science; Seismology

The secondary seismic wave, travelling more slowly than the P wave and consisting of elastic vibrations transverse to the direction of travel. It cannot propagate in a liquid (e.g. outer core).

Seismometer

Earth science; Seismology

The sensor part of the seismograph, usually a suspended pendulum.

Strong ground-motion

Earth science; Seismology

The shaking of the ground near an earthquake source made up of large amplitude seismic waves of various types.

Oblique faulting

Earth science; Seismology

The slip on the fault has components both along the dip and along the strike of the fault.

Threshold

Earth science; Seismology

The smallest size of explosion that can be detected as an explosion.

Gaussian noise spectrum

Earth science; Seismology

The spectrum of a time history whose sample values are generated by random selection from a statistical population that has a specified mean and standard deviation. The values (ordinates) have a ...