subsurface wave

subsurface wave

[¦səb′sər·fəs ′wāv]
(electromagnetism)
Electromagnetic wave propagated through water or land; operating frequencies for communications may be limited to approximately 35 kilohertz due to attenuation of high frequencies.
References in periodicals archive ?
That, in turn, enables those systems to detect an earthquake's primary wave in time to send out an alert before its damaging surface and subsurface waves arrive.
The turbulence created by these huge subsurface waves of the Samoan Passage is 1,000-10,000 times greater than that created in surrounding waters.