SWEET Ontology
type: Ontology
version info: 2.3
imports: phenFluidInstability.owl
imports: propQuantity.owl
imports: reprMathFunction.owl
imports: reprSciUnits.owl
imports: relaMath.owl
imports: relaSci.owl
imports: reprTime.owl
imports: reprMathOperation.owl

SpreadingRate
type: Class
subclass of: Rate
comment: The spreading rate is a measure of how fast plate divergence is occurring. [Wikipedia]

Frequency
type: Class
subclass of: Rate
subclass of: PhysicalQuantity
subclass of: Restriction
  has value: hertz
  on property: hasDefaultUnit
comment: The rate of recurrence of any periodic phenomenon, often associated with waves of all kinds. Without qualification frequency often means temporal frequency, the rate of recurrence of a time-varying function, but could mean spatial frequency, the rate of recurrence of a space-varying function. Spatial frequency is the reciprocal of the repeat distance (sometimes the wavelength). The dimensions of (temporal) frequency are inverse time. A common unit for frequency is cycle per second, formerly abbreviated cps, but superseded by hertz, abbreviated as Hz.

BruntVaisalaFrequency
type: Class
subclass of: Frequency
subclass of: Restriction
  on property: measureOf
  all values from: StaticStability
comment: The frequency at which a displaced parcel will oscillate when displaced vertically within a statically stable environment.

Divergence
type: Class
subclass of: VectorFieldOperation
subclass of: Restriction
  all values from: VectorField
  on property: hasOutput
subclass of: Restriction
  all values from: ScalarField
  on property: hasInput
comment: The expansion or spreading out of a vector field; also, a precise measure thereof.