jonswap {resourcecode} | R Documentation |
JONWSAP spectrum
Description
Creates a JONWSAP density spectrum (one-sided), defined by its integral parameters.
Usage
jonswap(hs = 5, tp = 15, fmax = rscd_freq, df = NULL, gam = 3.3)
Arguments
hs |
Hs (default: 5m) |
tp |
Period (default: 10s) |
fmax |
higher frequency of the spectrum or vector of frequencies (default to resourcecode frequency vector) |
df |
frequency step (unused if fmax=vector of frequencies) |
gam |
peak enhancement factor (default: 3.3) |
Details
Reference :
O.G.Houmb and T.Overvik, "Parametrization of Wave Spectra and Long Term Joint Distribution of Wave Height and Period," in Proceedings, First International Conference on Behaviour of Offshore Structures (BOSS), Trondheim 1976. 23rd International Towing Tank Conference, vol. II, pp. 544-551
ITTC Committee, 2002, "The Specialist Committee on Waves - Final Report and Recommendations to the 23rd ITTC", Proc. ITTC, vol. II, pp. 505-736.
Value
Density spectrum with corresponding parameters
Examples
S1 <- jonswap(tp = 15)
S2 <- jonswap(tp = 15, fmax = 0.95, df = 0.003)
plot(S1, type = "l", ylim = c(0, 72))
lines(S2, col = "red")
abline(v = 1 / 15)