Seismology

Seismology

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

Industry: Earth science

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Seismology

spike test

Earth science; Seismology

One type of resolution test that can be performed by looking at the impulse response to a spike. The spike is simulated by a localized velocity perturbation consisting of adjacent nodes at a ...

first motion

Earth science; Seismology

On a seismogram, the direction of motion at the beginning of the arrival of a P wave. Conventionally, upward motion indicates a compression of the ground; downward motion, a dilatation.

Obtained from the Fourier transform of the output signal divided by the Fourier transform of the input signal. The values of the frequency response function are the eigenvalues of the system. It is ...