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surface wave
(redirected from Groundwave)

    Also found in: Encyclopedia, Wikipedia 0.01 sec.
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.
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Some of these problems are reduced by signals that do not reflect off the ionosphere, such as line-of-sight signals with small coverage areas, and groundwave signals in the low frequency (LF) part of the radio spectrum below 300 kHz.
The GOES time code service, 1974-2004: a retrospective by Hanson, D. Wayne / Journal of Research of the National Institute of Standards and Technology
 
 
 
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