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Significant wave height, scientifically represented as Hs or Hsig, is an important parameter for the statistical distribution of ocean waves. The most common waves are lower in height than Hs. This implies that encountering the significant wave is not too frequent.
Significant wave height is an average measurement of the largest 33% of waves. We measure it because in many applications of wave data, larger waves are more "significant" (important) than smaller waves. For example, the larger waves in a storm cause the most erosion on a beach.
Significant Wave Height. Commonly Referred to as Seas in the Marine Forecast. This is the average of the highest one-third (33%) of waves (measured from trough to crest) that occur in a given period. This is measured because the larger waves are usually more significant than the smaller waves.
In time domain analysis, the wave data are typically characterized by significant wave height and a mean zero-crossing wave period. The significant wave height is a parameter used particularly throughout coastal engineering, both to define and model sea states.
The average wave height is estimated to be about 5/8 the value of the significant wave height. Hs is the significant wave height. This is the average of the highest one third of waves. This is currently what is displayed in the forecast.
Significant wave height, WVHT, is approximately equal to the average of the highest one-third of the waves, as measured from the trough to the crest of the waves. WVHT is calculated using: where m0 is the variance of the wave displacement time series acquired during the wave acquisition period.
Significant wave height (SWH) stems from a combination of locally generated “wind-sea” and remotely generated “swell” waves. In the Northern and Southern Hemispheres, wave heights typically undergo a sinusoidal annual cycle, with larger SWH in winter in response to seasonal changes in high-latitude storm patterns that generate ...