Seismology

Seismology

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

Industry: Earth science

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Seismology

lurching of the ground

Earth science; Seismology

Disruption of soil by lateral spreading under gravity.

gutenberg discontinuity

Earth science; Seismology

Discontinuity in seismic velocity that marks the boundary between the core and the mantle; named after seismologist Beno Gutenberg.

eigenfrequencies

Earth science; Seismology

Discrete frequencies of motion that satisfy the boundary conditions of a mode.

longitudinal waves

Earth science; Seismology

Displacement associated with far-field P-waves in a homogeneous isotropic solid is parallel to the direction of propagation (e.g. P-waves).

Gutenberg discontinuity

Earth science; Seismology

Discontinuity in seismic velocity that marks the boundary between the core and the mantle; named after seismologist Beno Gutenberg.

Displacement that reaches the Earth's surface during slip along a fault. Commonly accompanies moderate and large earthquakes having focal depths less than 20 km. Surface faulting also may accompany ...

far-field term

Earth science; Seismology

Decays slowly, dominating displacement at large distances and disproportional to the time derivative of the reduced displacement potential, that is if there is a step in the effective pressure at the ...