Seismology

Seismology

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

Industry: Earth science

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Seismology

Mare

Earth science; Seismology

A dark, low-lying lunar plain, filled to an undetermined depth with volcanic rocks. (Plural: maria).

Regional distance

Earth science; Seismology

A source-receiver distance greater than 100 km but less than 1000 km.

Ray-tracing method

Earth science; Seismology

A computational method of computing ground-shaking estimates that assumes that the ground motion is composed of multiple arrivals that leave the source and are reflected or refracted at velocity ...

Synthetic seismogram

Earth science; Seismology

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

Moho

Earth science; Seismology

A discontinuity in seismic velocity that marks the boundary between the Earth's crust and mantle. Also termed the Mohorovicic' discontinuity, after the Croatian seismologist Andrija Mohorovicic' ...

Velocity structure

Earth science; Seismology

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

A number used to compare sizes of tsunamis generated by different earthquakes and calculated from the logarithm of the maximum amplitude of the tsunami wave measured by a tide gauge distant from the ...