SWEET Ontology
type: Ontology
version info: 2.3
imports: realmLandCoastal.owl
imports: phenWave.owl
imports: phenOcean.owl
imports: rela.owl
imports: phenCycle.owl

OceanTide
type: Class
subclass of: Tide
subclass of: CoastalPhenomena
comment: The periodic rising and falling of the earth's oceans and atmosphere. It results from the tide-producing forces of the moon and sun acting upon the rotating earth. This disturbance actually propagates as a wave through the atmosphere and along the surface of the waters of the earth. Atmospheric tides are always so designated, whereas the term “tide“ alone commonly implies the oceanic variety. Sometimes, the consequent horizontal movement of water along the coastlines is also called “tide,” but it is preferable to designate the latter as tidal current, reserving the name tide for the vertical wavelike movement.

Swell
type: Class
subclass of: CoastalPhenomena
subclass of: GravityWave
comment: Surface gravity waves on the ocean that are not growing or being sustained any longer by the wind.