Application of the Huang-Hilbert transform and natural time to the analysis of seismic electric signal activities

Journal Article · Mon Dec 01 00:00:00 EST 2014 · Chaos (Woodbury, N. Y.)

DOI:https://doi.org/10.1063/1.4896795· OSTI ID:22351000

Papadopoulou, K. A.

The Huang method is applied to Seismic Electric Signal (SES) activities in order to decompose them into their components, named Intrinsic Mode Functions (IMFs). We study which of these components contribute to the basic characteristics of the signal. The Hilbert transform is then applied to the IMFs in order to determine their instantaneous amplitudes. The results are compared with those obtained from the analysis in a new time domain termed natural time, after having subtracted the magnetotelluric background from the original signal. It is shown that these instantaneous amplitudes, when combined with the natural time analysis, can be used for the distinction of SES from artificial noises.

• OSTI ID: 22351000
• Journal Information: Chaos (Woodbury, N. Y.), Vol. 24, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1054-1500
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
COMPARATIVE EVALUATIONS
FUNCTIONS
NOISE
SIGNALS