7 Terms
Home > Industry/Domain > Earth science > Seismology
Seismology
The study of earthquake, seismic sources, and wave propagation through the Earth.
Industry: Earth science
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Seismology
Oscillator
Earth science; Seismology
A mass that moves with oscillating motion under the influence of external forces and one or more forces that restore the mass to its stable at-rest position. In earthquake engineering, an oscillator ...
Orthogonal function
Earth science; Seismology
A set of functions where the integral of the product of two different functions over a specified interval is always zero. Examples include Bessel functions and Legendre functions.
Green's function
Earth science; Seismology
A mathematical representation that, in reference to earthquake shaking, is used to represent the ground motion caused by instantaneous slip on a small part of a fault. Green's functions can be ...
Swarm
Earth science; Seismology
A series of minor earthquakes, none of which may be identified as the mainshock, occurring in a limited area and time.
Focal mechanism
Earth science; Seismology
The direction and sense of slip on a fault plane at the point of origin (hypocenter) of an earthquake, as inferred from the first seismic waves which arrive at various locations; often, they are draw ...
Foreland basin
Earth science; Seismology
Sedimentary basin on the trench side of a continent-continent collision zone.
Higher-modes
Earth science; Seismology
Secondary frequencies generated that have one or more nodes of zero motion (see also Fundamental mode).
