International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

A Widely Indexed Open Access Peer Reviewed Multidisciplinary Bi-monthly Scholarly International Journal

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Multifractal Analysis of Pre-Seismic VLF Signal Anomalies

Author(s) Ashutosh Kumar, Amrendra Kumar, Deepak Kumar Sondhiya
Country India
Abstract This study investigates multifractal characteristics of sub-ionospheric Very Low Frequency (VLF) signals recorded from the Bafa transmitter (Turkey) for five earthquakes (2011–2013). The Wavelet Transform Modulus Maxima (WTMM) method is used to analyze nonlinear variability before and after seismic events. Significant deviations in scaling behavior and widening of the singularity spectrum were observed prior to earthquakes, indicating ionospheric perturbations associated with seismic activity.
Keywords VLF signals, Earthquake precursors, Multifractal analysis, WTMM, Ionospheric perturbations
Field Engineering
Published In Volume 8, Issue 1, January-February 2026
Published On 2026-01-15
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E-ISSN 2582-2160
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