P

Word -> "Mot"	Symbol	Unity	Definition
Particle movement -> "Mouvement des particules"			Waves passing through water cause particles near the surface to rotate in circular orbits in deep water and in elliptic orbit in shallow water. See "Orbital velocity".
Peak direction -> "Direction pic"	p	deg	The direction which corresponds to the "Peak frequency". See also "Direction of wave propagation", "Mean wave direction", "Wave direction".
Peak frequency -> "Fréquence pic"	fp	Hz	Frequency at which the "Spectral density function" is at a maximum.
Peak period -> "Période pic"	Tp	s	Spectral peak wave period 1/fp where fp is the spectral "Peak frequency". Also called "Modal period".
Peak wave length -> "Longueur pic"	Lp	m	Wave length at fp.
Peakedness factor -> "Facteur de finesse du pic du spectre"	Qp		-> see form See also "Spectral width parameters".
Period of maximum wave -> "Période de la vague maximale"	THmax	s	Duration between the zero-crossings which define the wave of maximum height. Zero downcrossing or zero upcrossing.
Phase velocity -> "Vitesse de phase"	cp	m/s	Speed of a wave in a wave train. Defined as: wave length/wave period i.e /k [2].
Plunging waves -> "Déferlement plongeant"			A kind of breaking waves: created when an abrupt shoaling of the bottom creates a sudden deficiency of water ahead of the wave.
Probability density function -> "Fonction de densité de probabilité"	p(x)		-> see form
Probability distribution function -> "Fonction de distribution de probabilité"	P(x)		Defined as: Prob{x(t)<x} where x(t) is the variable considered.