wave trough


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Related to wave trough: wave crest

wave trough

[′wāv ‚trȯf]
(physics)
The lowest part of a wave form between successive wave crests.
References in periodicals archive ?
This means that in the strongly nonlinear environment a shock-like rear slope of the wave trough appears almost instantaneously and that the wave propagates into the shallow area as a bore (Parnell et al.
If the waves can be assumed to be (at least locally) long-crested, the motion of extremely long wave troughs produced by ships and propagating over very shallow water in ideal conditions can be approximately described by the following system of equations (Whitham, 1974):
2 that Riemann wave crests always propagate faster than c, and form a steep front at the face slope of the wave, while wave troughs always propagate slower than c, and form a steep front at the back slope of the wave.
In this case the formation of the steep wave front occurs almost immediately and results in more pronounced nonlinear effects for wave troughs, rather than for wave crests [25].
One chamber is maintained at a high pressure under the wave crest, the other at a low pressure under the wave trough.
Meanwhile, water in the low-pressure chamber flows out when its internal pressure is less than the external pressure under a wave trough.
As mentioned before, the phase 0 corresponds to the wave trough.
Again the value of 0 deg corresponds to the lowest surface elevation in the wave trough.
John Griffiths of Clyde Coastguard said: 'These two men are truly fortunate to be reunited with their families after such a difficult rescue with a 15ft drop between wave troughs and peaks.
The effect is slight, until the volume is turned up, when these variations begin to slow the wave troughs.
Moreover, waves from these sister ships frequently have the asymmetry coefficient below 1, that is, the wave troughs are systematically deeper than the crest heights.
The wave crests are, therefore, about 40% higher than the water surface dropdown at the wave troughs.