"Strange attractor like" electric seismic precursor observed prior to the Nafpactos, Greece, EQs of 18th / 22nd January, 2010 (Ms = 5.7R / 5.6R)

TL;DR

This study identifies 'strange attractor like' electric seismic precursors in Earth's electric field data that precede earthquakes in Greece, suggesting a potential method for short-term earthquake prediction based on electric field oscillations.

Contribution

The paper demonstrates that specific electric field oscillations can serve as short-term seismic precursors, extending previous findings with new data from the 2010 Nafpactos earthquakes.

Findings

Precursor observed 4 days before the earthquake for T=1 day.

Precursor observed 11 days before the earthquake for T=14 days.

Shorter wavelengths correspond to shorter predictive windows.

Abstract

Phase maps, of the earth's electric field monitored at PYR and ATH monitoring sites in Greece, were compiled for two distinct oscillating earth's electric field components long before, during and after the Nafpactos EQs in Greece (January 18th and 22nd of 2010, Ms = 5.7 / 5.6R). The selected periods of the earth's oscillating electric field were the T = 1 day and T = 14 days. The specific components were selected due to the fact that they are highly depended from the corresponding same period tidal waves (M1, K1, P1). It was found that the "strange attractor like" electric seismic precursor preceded the main seismic event for four days for the case of T = 1 day, while a much longer period of time (11 days) was observed for the case of T = 14 days. It seems that the shorter the used wavelength is the shorter is the predictive time window regarding the pending seismic event. The present work replicated earlier similar results obtained by the same methodology for past large seismic events in Greece and have already been presented in the same database. The present methodology seems to be a promising tool in short-term (in time) earthquake prediction.