"2016-07-19 15:18:51.0" . "SDN:P07::62Q37UQE" . "Swell waves are waves on the ocean surface and are the low frequency portion of a bimodal wave frequency spectrum. The primary swell wave is the most energetic swell wave. Significant wave height is a statistic computed from wave measurements and corresponds to the average height of the highest one third of the waves, where the height is defined as the vertical distance from a wave trough to the following wave crest."@en . "false" . "" . . "1" . "accepted"@en . "sea_surface_primary_swell_wave_significant_height"@en . . . "SDN:P07::62Q37UQE" . . . "SDN:P07::62Q37UQE" . "2016-07-19 15:18:51.0" . . "1" . .