Unipolar magnetic field pulses as transient signals prior to the 2009 Aquila earthquake shock

TL;DR

This study analyzes magnetic field pulses recorded before the 2009 Aquila earthquake, identifying transient signals that could serve as precursors, using fluxgate and Overhauser magnetometer data.

Contribution

It provides a detailed analysis of pre-seismic magnetic pulses, incorporating multiple magnetometer types to detect and distinguish transient signals prior to an earthquake.

Findings

Detection of diffusive form transient signals before the earthquake

Discrimination of pre-seismic magnetic pulses from other signals

Enhanced understanding of magnetic precursors for earthquakes

Abstract

Unipolar pre-seismic magnetic field pulses have been observed first by Bleier et al. (2009) and Villante et al. (2010) and Nenovski et al. (2013). In the present study a detailed analysis of the pulses is conducted looking for signatures of transient signals similar to that recorded at the 2009 Aquila earthquake main shock (Nenovski, 2015). Various magnetic field data around the Aquila earthquake provide an instrumental basis for such an analysis. In addition to fluxgate magnetometer data (already examined in previous studies), overhauser magnetometer data are involved. The result is a detection and discrimination of transient signals of diffusive form that appear prior to the earthquake main shock.