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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

right-lateral fault

Earth science; Seismology

A strike-slip fault on which the displacement of the far block is to the right when viewed from either side. The Queen Charlotte fault is one of this type of fault.

oceanic spreading ridge

Earth science; Seismology

A fracture zone along the ocean bottom that accommodates upwelling of mantle material to the surface, thus creating new crust. This fracture is topographically marked by a line ...

station

Earth science; Seismology

A ground position at which a geophysical instrument is located for an observation.

auxiliary fault-plane

Earth science; Seismology

A plane orthogonal to the fault plane.

velocity structure

Earth science; Seismology

A generalized regional model of the Earth's crust that represents crustal structure using layers having different assumed seismic velocities.

synthetic seismogram

Earth science; Seismology

A mathematical construction of a seismogram based on realistic model of the Earth.

seismic zone

Earth science; Seismology

A region in which earthquakes are known to occur.