Fluctuations, under time reversal, of the natural time and the entropy distinguish similar looking electric signals of different dynamics

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2827363· OSTI ID:21064504

Varotsos, P A; Sarlis, N V; Skordas, E S; Lazaridou, M S ^[1]

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1. Solid State Section and Solid Earth Physics Institute, Physics Department, University of Athens, Panepistimiopolis, Zografos 157 84, Athens (Greece)

We show that the scale dependence of the fluctuations of the natural time itself under time reversal provides a useful tool for the discrimination of seismic electric signals (critical dynamics) from noises emitted from man-made sources, as well as for the determination of the scaling exponent. We present recent data of electric signals detected at the Earth's surface, which confirm that the value of the entropy in natural time as well as its value under time reversal are smaller than that of the entropy of a 'uniform' distribution.

• OSTI ID: 21064504
• Journal Information: Journal of Applied Physics, Vol. 103, Issue 1; Other Information: DOI: 10.1063/1.2827363; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH CRUST
ENTROPY
FLUCTUATIONS
SEISMOLOGY
SIGNALS