ground wave


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Related to ground wave: sky wave, space wave

ground wave

[′grau̇nd ‚wāv]
(communications)
A radio wave that is propagated along the earth and is ordinarily affected by the presence of the ground and the troposphere; includes all components of a radio wave over the earth except ionospheric and tropospheric waves. Also known as surface wave.
(ordnance)
One of the waves formed in the ground by an explosion.

ground wave

ground wave
The component of a transmitted electromagnetic wave that travels from ground transmitter to ground receiver along the surface of the earth. These waves may follow the earth's curvature caused by diffraction and bending and can cover very large areas. The range of the ground wave varies with the frequency and, at a specific frequency, with the square root of its power. Also called a surface wave.
References in periodicals archive ?
3 temblor was a separate, "triggered earthquake" caused by ground waves from the Chilean quake.
Also, a disparity in travel time between two sets of ground waves suggests that sound travels faster through the material in some directions than it does in others.
The slow, rolling ground waves that spread along Earth's surface from that temblor caused the seafloor beneath the grounded iceberg to oscillate up and down about 2 centimeters every 20 seconds or so.
Even though scientists can distinguish between the ground waves caused by earthquakes and those from explosions, it's often difficult if not impossible to tell a nuclear blast from a chemical explosion, such as one caused by TNT.

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