@prefix dct: . @prefix ns1: . @prefix ns2: . @prefix ns3: . @prefix rdfs: . @prefix skos: . a skos:Concept ; dct:created "2019-01-14" ; dct:modified "2019-01-14" ; ns3:hasProfile ; ns2:status ; rdfs:seeAlso ; skos:definition "The quantity with standard name sea_surface_primary_swell_wave_from_direction is the direction from which the most energetic swell waves are coming. 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. The phrase from_direction is used in the construction X_from_direction and indicates the direction from which the velocity vector of X is coming. The direction is a bearing in the usual geographical sense"@en ; skos:exactMatch ; skos:prefLabel "sea surface primary swell wave from direction"@en ; ns1:hadPrimarySource .