A report on Standing wave and River surfing

Animation of a standing wave ( red ) created by the superposition of a left traveling ( blue ) and right traveling ( green ) wave
Surfer on the Eisbach, Englischer Garten, Munich, Germany.
Longitudinal standing wave
Surfing a standing wave on the Eisbach.
Transient analysis of a damped traveling wave reflecting at a boundary
Surfers on the Severn bore
Standing wave in stationary medium. The red dots represent the wave nodes.
A standing wave (black) depicted as the sum of two propagating waves traveling in opposite directions (red and blue).
Electric force vector (E) and magnetic force vector (H) of a standing wave.
Standing waves in a string – the fundamental mode and the first 5 harmonics.
A standing wave on a circular membrane, an example of standing waves in two dimensions. This is the fundamental mode.
A higher harmonic standing wave on a disk with two nodal lines crossing at the center.

River surfing is the sport of surfing either standing waves, tidal bores or upstream waves in rivers.

- River surfing

Many standing river waves are popular river surfing breaks.

- Standing wave
Animation of a standing wave ( red ) created by the superposition of a left traveling ( blue ) and right traveling ( green ) wave

1 related topic with Alpha

Overall

A raft encountering a hydraulic jump on Canolfan Tryweryn in Wales.

Hydraulic jump

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Phenomenon in the science of hydraulics which is frequently observed in open channel flow such as rivers and spillways.

Phenomenon in the science of hydraulics which is frequently observed in open channel flow such as rivers and spillways.

A raft encountering a hydraulic jump on Canolfan Tryweryn in Wales.
Figure 2: A common example of a hydraulic jump is the roughly circular stationary wave that forms around the central stream of water. The jump is at the transition between the point where the circle appears still and where the turbulence is visible.
Figure 3: A tidal bore in Alaska showing a turbulent shock-wave-like front. At this point the water is relatively shallow and the fractional change in elevation is large.
Figure 4: An undular front on a tidal bore. At this point the water is relatively deep and the fractional change in elevation is small.
Figure 5: Series of roll waves moving down a spillway, where they terminate in a stationary hydraulic jump.
Naturally occurring hydraulic jump observed on the Upper Spokane Falls north channel.
Saint Anthony Falls on the Mississippi River showing a pronounced hydraulic jump.
Supercritical flow down the Cleveland Dam spillway at the head of the Capilano River in North Vancouver, British Columbia, Canada.
Energy dissipation using hydraulic jump.
Kayak playing on the transition between the turbulent flow and the recirculation region in the pier wake.

When this occurs, the water slows in a rather abrupt rise (a step or standing wave) on the liquid surface.

Similarly, kayakers and surfers have been known to ride tidal bores up rivers.