Calculate ocean wave parameters using spectral analysis methods
waveStatsSP(data, Fs, method = c("welchPSD", "spec.pgram"), plot = FALSE, kernel = NULL, segments = NULL, ...)
A vector of surface heights that constitute a time series of observations. Typical units = meters.
Sampling frequency of the surface heights data. Units = Hz, i.e. samples per second.
A character string indicating which spectral analysis method
should be used. Choose one of
A logical value denoting whether to plot the spectrum. Defaults
An object of class
Numeric value indicating the number of windowing segments to
Additional arguments to be passed to spectral analysis functions,
such as the
List of wave parameters based on spectral methods.
h Average water depth. Same units as input surface heights
Hm0 Significant wave height based on spectral moment 0. Same
units as input surface heights (typically meters).
This is approximately equal to the average of the highest 1/3 of the waves.
Tp Peak period, calculated as the frequency with maximum power
in the power spectrum. Units of seconds.
m0 Estimated variance of time series (moment 0).
T_0_1 Average period calculated as \(m0/m1\), units seconds. Follows National
Data Buoy Center's method for average period (APD).
T_0_2 Average period calculated as \((m0/m2)^0.5\), units seconds. Follows
Scripps Institution of Oceanography's method for calculating average period
(APD) for their buoys.
EPS2 Spectral width parameter.
EPS4 Spectral width parameter.
Carries out spectral analysis of ocean wave height time series to estimate common wave height statistics, including peak period, average period, and significant wave height.
Original MATLAB function by Urs Neumeier: http://neumeier.perso.ch/matlab/waves.html, based on code developed by Travis Mason, Magali Lecouturier and Urs Neumeier.
waveStatsZC for wave statistics determined using a
data(wavedata) waveStatsSP(wavedata$swDepth.m, Fs = 4, method = 'spec.pgram', plot = TRUE)#> $h #>  10.45138 #> #> $Hm0 #>  0.4146835 #> #> $Tp #>  14.17323 #> #> $m0 #>  0.01074765 #> #> $T_0_1 #>  10.47688 #> #> $T_0_2 #>  9.782931 #> #> $EPS2 #>  0.3832773 #> #> $EPS4 #>  0.6402274 #>