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Seismology

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

Contributors in Seismology

Seismology

Meizoseismal region

Earth science; Seismology

The area of strong shaking and significant damage in an earthquake.

Arrival

Earth science; Seismology

The appearance of seismic energy on a seismic record.

Takeoff angle

Earth science; Seismology

The angle that a ray makes with a downward vertical. Used in determining depth phases.

Azimuth

Earth science; Seismology

The angle measured clockwise from north a ray must travel to arrive at a given station.

Dip

Earth science; Seismology

The angle between a geologic surface -- for example, a fault plane -- and the horizontal. The direction of dip can be thought of as the direction a ball, if placed upon the tilted surface, would ...

Yield

Earth science; Seismology

The amount of energy released (in kilotons of TNT) from an explosion.

Earthquake segment

Earth science; Seismology

That part of a fault zone or fault zones that has ruptured during individual earthquakes.

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