The site also includes a power analysis bibliography with over 50 references, and links to other resources on the Web. Obtain variability estimates of population indices of organisms similar to the one you are studying. Find useful references for learning more about the finer details of designing effective monitoring programs. Wavelet Analysis Wavelets are mathematical functions that can be used to represent environmental data. Wavelets provide more appropriate functions than those provided from a Fourier analysis.
Wavelets are extremely useful when the data contain sharp discontinuities.
The Moriet wavelet is a mother wavelet consisting of a plane wave modulating by a Gaussian density. The Marr wavelet, also called the Mexican hat wavelet, is obtained by calculating the second derivative of a Gaussian density. The author provides two wavelet algorithms to process data. They both calculate the wavelet spectrum of a time series. One uses the Morlet as the mother wavelet, the other uses the Marr.