Significant wave height

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  • Significant Wave Height
definition
  • The average height of the highest one-third of all waves occurring in a particular time period.  
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Abstract from DBPedia
    In physical oceanography, the significant wave height (SWH or Hs) is defined traditionally as the mean wave height (trough to crest) of the highest third of the waves (H1/3). Nowadays it is usually defined as four times the standard deviation of the surface elevation – or equivalently as four times the square root of the zeroth-order moment (area) of the wave spectrum. The symbol Hm0 is usually used for that latter definition. The significant wave height may thus refer to Hm0 or H1/3; the difference in magnitude between the two definitions is only a few percent.

    (Source: http://dbpedia.org/resource/Significant_wave_height)

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