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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
The solid curves in Figure 7 show the fitted dependences of ground wave peak value on the propagation distance for the planar earth and the spherical earth.
In this paper, we present a new approximate method for lightning-produced ELF/VLF ground wave propagation over intermediate ranges, which is validated by using Newton-Raphson root-finding method presented by Shao and Jacobson [5] for propagation path with different ground conductivities; we found our approximate method could predict the field peak and waveform rise time with satisfactory accuracy.
A new approximate method for lightning-radiated ELF/VLF ground wave propagation over intermediate ranges is presented.
Wait, "Recent analytical investigations of electromagnetic ground wave propagation over inhomogeneous earth models," Proceedings of the IEEE, vol.
Walsh, "Measurement of ocean surface currents using a long-range, high-frequency ground wave radar," IEEE Journal of Oceanic Engineering, vol.
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.
Since then he has collected reports made by other seismologists who saw ground waves in connection with 26 quakes around the world.

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