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Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Seismology

attenuation

Earth science; Seismology

The reduction in amplitude of a wave with time or distance travelled.

accelerogram

Earth science; Seismology

The record from an accelerograph showing ground acceleration as a function of time.

slowness

Earth science; Seismology

The reciprocal of velocity. Most seismic tomography methods involve subdividing the medium into blocks and solving for slowness perturbations that cause the predicted times to ...

poles and zeros

Earth science; Seismology

The real and complex solutions to the instruments transfer function. Used in removing the instrument response from the signal.

Young's modulus (E)

Earth science; Seismology

The ratio of tensional stress to extensional strain along the axis where the tension was applied.

moveout

Earth science; Seismology

The ratio of travel time to the distance traveled.

shear modulus

Earth science; Seismology

The ratio of shear stress to shear strain of a material during simple shear.