20 Terms
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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.
Tsunami magnitude (Mt)
Earth science; Seismology
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 ...
