Phase statistics of seismic coda waves.
We report the analysis of the statistics of the phase fluctuations in the coda of earthquakes recorded during a temporary experiment deployed at Pinyon Flats Observatory, California. The observed distributions of the spatial derivatives of the phase in the seismic coda exhibit universal power-law decays whose exponents agree accurately with circular Gaussian statistics. The correlation function of the phase derivative is measured and used to estimate the mean free path of Rayleigh waves.
Anache-Ménier
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D
Laboratoire de Physique et de Modélisation des Milieux Condensés, Université Joseph Fourier/CNRS, BP 166, 38042 Grenoble, France.
van Tiggelen
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BA
Margerin
L
L