Mean envelopes and mean spectrums of control signals were correlated (r-values) with those of propagated signals using Bravais-Pearson product-moment.
The main difference between pyramid-based and row-column EMD is the generation of a mean envelope.
The sifting process of two-dimensional EMD is interactive, and involves three main steps: (1) determining the extreme points; (2) interpolating the extreme points for the mean envelope; and (3) subtracting the signal using the mean envelope.
Only troughs whose absolute magnitude was greater than that of the third derivative's peak envelope and at least half the mean envelope magnitude were reported as CPd3 peaks.
The peak energy ratios are measured by taking the ratio of the maximum amplitude of the mean squared envelope of the transverse component to that of the sum of the three components.
Then, stacking the squared velocity seismograms of different earthquakes at each station, we obtain the mean squared envelope of the transverse component as well as that of the sum of the three components.
We have shown that mean climatic envelope of species can be largely dependent on land uses and disturbance regimes and that this can have important effects in our ability to detect the effects of climate change through community indicators.
If mean climatic envelope of species within communities varied as a function of land uses, climate change indicator figures would be affected by factors other than climate change in a dynamic global change scenario.
(b) Root-mean-square envelope of the horizontal waveforms (4-32 Hz) recorded at the borehole station KWBH, showing the triggering of NVT during the arrival of surface waves.
