surface wave

noun Geology.
a seismic wave that travels along or parallel to the earth's surface ( distinguished from body wave ).
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Science Dictionary
surface wave  
A seismic wave that travels across the surface of the Earth as opposed to through it. Surface waves usually have larger amplitudes and longer wavelengths than body waves, and they travel more slowly than body waves do. love waves and Rayleigh waves are kinds of surface waves. Compare body wave. See Note at earthquake.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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00:10
Surface wave is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Example sentences
The surface wave modeling will use both event-based methods and ambient noise tomography.
We compare surface wave phase velocities predicted by our model with observations.
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