model_red_noise_wt {WaverideR}

Models average spectral power based curves based on a red-noise signal generated using the characteristics of an input signal.

Description

The model_red_noise_wt function is used to generate average spectral power curves based on and input signal and set wavelet settings.

Usage

model_red_noise_wt(
  wavelet = NULL,
  n_simulations = NULL,
  run_multicore = FALSE,
  verbose = FALSE
)

Arguments

wavelet

Wavelet object created using the analyze_wavelet function.

n_simulations

Number of red noise simulations.

run_multicore

run simulation using multiple cores Default=FALSE the simulation is run at x-2 cores to allow the 2 remaining processes to run background processes.

verbose

Print text Default=FALSE.

Value

Returns a matrix in which each column represents the average spectral power resulting from a red-noise run.

Author(s)

Code based on the analyze.wavelet function of the 'WaveletComp' R package and wt function of the 'biwavelet' R package which are based on the wavelet 'MATLAB' code written by Christopher Torrence and Gibert P. Compo (1998).

References

Angi Roesch and Harald Schmidbauer (2018). WaveletComp: Computational Wavelet Analysis. R package version 1.1. https://CRAN.R-project.org/package=WaveletComp

Gouhier TC, Grinsted A, Simko V (2021). R package biwavelet: Conduct Univariate and Bivariate Wavelet Analyses. (Version 0.20.21), https://github.com/tgouhier/biwavelet

Torrence, C., and G. P. Compo. 1998. A Practical Guide to Wavelet Analysis. Bulletin of the American Meteorological Society 79:61-78. https://paos.colorado.edu/research/wavelets/bams_79_01_0061.pdf

Morlet, Jean, Georges Arens, Eliane Fourgeau, and Dominique Glard. "Wave propagation and sampling theory—Part I: Complex signal and scattering in multilayered media. " Geophysics 47, no. 2 (1982): 203-221. https://pubs.geoscienceworld.org/geophysics/article/47/2/203/68601/Wave-propagation-and-sampling-theory-Part-I

J. Morlet, G. Arens, E. Fourgeau, D. Giard; Wave propagation and sampling theory; Part II, Sampling theory and complex waves. Geophysics 1982 47 (2): 222–236. https://pubs.geoscienceworld.org/geophysics/article/47/2/222/68604/Wave-propagation-and-sampling-theory-Part-II

Examples

#'#generate average spectral power curves based on red noise curves which are
# based on the magnetic susceptibility record of the Sullivan core of Pas et al., (2018)

mag_wt <- analyze_wavelet(data = mag,
dj = 1/100,
lowerPeriod = 0.1,
upperPeriod = 254,
verbose = FALSE,
omega_nr = 10)

#increase n_simulations to better define the red noise spectral power curve
mag_wt_red_noise <- model_red_noise_wt(wavelet=mag_wt,
n_simulations=10, # increase number for better constrained results
run_multicore=FALSE,
verbose=FALSE)