Evidence of critical dynamics in various electromagnetic precursors

SM Potirakis, Y Contoyiannis, A Schekotov… - The European Physical …, 2021 - Springer
A wide variety of electromagnetic phenomena possibly related with earthquake (EQ)
preparation processes have been reported in the literature during the last few decades. An …

Four-stage model of earthquake generation in terms of fracture-induced electromagnetic emissions: a review

K Eftaxias, SM Potirakis, Y Contoyiannis - Complexity of seismic time series, 2018 - Elsevier
Based on a multidisciplinary analysis, the following four-stage model of earthquake (EQ)
dynamics by means of precursory electromagnetic (EM) emissions (EMEs) has been …

Rock burst precursor electromagnetic radiation signal recognition method and early warning application based on recurrent neural networks

Y Di, E Wang - Rock Mechanics and Rock Engineering, 2021 - Springer
The fracture-induced electromagnetic radiation (FEMR) method is a promising geophysical
method for the monitoring and early warning of coal-rock burst disasters. At present, the time …

Potential earthquake precursory pattern from space: The 2015 Nepal event as seen by magnetic Swarm satellites

A De Santis, G Balasis, FJ Pavòn-Carrasco… - Earth and planetary …, 2017 - Elsevier
A large earthquake of 7.8 magnitude occurred on 25 April 2015, 06: 26 UTC, with the
epicenter in Nepal. Here, taking advantage of measurements provided by the Swarm …

Critical dynamics in stratospheric potential energy variations prior to significant (M> 6.7) earthquakes

DZ Politis, SM Potirakis, S Kundu, S Chowdhury… - Symmetry, 2022 - mdpi.com
Lithosphere–atmosphere–ionosphere coupling (LAIC) is studied through various physical or
chemical quantities, obtained from different sources, which are observables of the involved …

Gravity wave activity in the stratosphere before the 2011 Tohoku earthquake as the mechanism of lithosphere-atmosphere-ionosphere coupling

SS Yang, M Hayakawa - Entropy, 2020 - mdpi.com
The precursory atmospheric gravity wave (AGW) activity in the stratosphere has been
investigated in our previous paper by studying an inland Kumamoto earthquake (EQ). We …

Statistical and criticality analysis of the lower ionosphere prior to the 30 October 2020 Samos (Greece) earthquake (M6. 9), based on VLF electromagnetic propagation …

DZ Politis, SM Potirakis, YF Contoyiannis, S Biswas… - Entropy, 2021 - mdpi.com
In this work we present the statistical and criticality analysis of the very low frequency (VLF)
sub-ionospheric propagation data recorded by a VLF/LF radio receiver which has recently …

An unsupervised K-means based clustering method for geophysical post-earthquake diagnosis

F Mato, T Toulkeridis - 2017 IEEE Symposium Series on …, 2017 - ieeexplore.ieee.org
After an earthquake takes place, the geophysical problem to solve has always been to
determine the geodynamical behaviour of the rupture zone. Nonetheless, such …

Recent seismic activity at Cephalonia (Greece): a study through candidate electromagnetic precursors in terms of non-linear dynamics

SM Potirakis, Y Contoyiannis, NS Melis… - Nonlinear Processes …, 2016 - npg.copernicus.org
The preparation process of two recent earthquakes (EQs) that occurred in Cephalonia
(Kefalonia), Greece,((38.22∘ N, 20.53∘ E), 26 January 2014, M w= 6.0, depth∼ 20 km) and …

On possible electromagnetic precursors to a significant earthquake (Mw= 6.3) occurred in Lesvos (Greece) on 12 June 2017

SM Potirakis, A Schekotov, Y Contoyiannis, G Balasis… - Entropy, 2019 - mdpi.com
This paper reports an attempt to use ultra-low-frequency (ULF) magnetic field data from a
space weather monitoring magnetometer array in the study of earthquake (EQ) precursors in …