Dr. Konstantinos Eftaxias, Professor


National and Kapodistrian University of Athens
Physics Department, Solid State Physics Section
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RESEARCH ACTIVITY


Research activities:


1. Studies of Semiconductors in terms of Magnetophotocoductivity.
2. Studies of Thermodynamics of Point Defect
3. Investigation of Natural and Synthetic Crystals by Electron Paramagnetic Resonance
4. Reology of the Earth in terms of thermodynamics of point defects
6. Electromagnetic Induction in the Earth - Focus on the sensitivity of a local area to ULF Seismic Electric Signals
7. Study of ULF Seismic Electric signals
8. Didactic of Physics


The main research fields now are:


9. Studies of MHz-kHz pre-seismic electromagnetic emissions.
10. A unified study of extreme phenomena by means of complexity and universality.


Recent Publications

Potirakis, S., Zitis, P., Eftaxias, K., Dynamical analogy between economical crisis and earthquake dynamics within the nonextensive statistical mechanics framework PHYSICA A (in press).

Contoyiannis, Y., Potirakis, S., Eftaxias, K.,

The Earth as a living planet: human-type diseases in the earthquake preparation process,

Nat. Hazards Earth Syst. Sci., 13, 125–139, 2013

K. Eftaxias, G. Minadakis, S. M. Potirakis, G. Balasis, Dynamical analogy between epileptic seizures and seismogenic electromagnetic emissions by means of nonextensive statistical mechanics, Physica A, 392, 497-509, 2013.

G. Minadakis, S. M. Potirakis, J. Stonham, C. Nomicos and K. Eftaxias, The role of propagating stress waves in geophysical scale: evidence in terms of nonextensivity, Physica A, Vol. 391, 22, 5648-5657, 2012.

S. M. Potirakis, G. Minadakis, and K. Eftaxias, Relation between seismicity and pre-earthquake electromagnetic emissions in terms of energy, information and entropy content, Nat. Hazards Earth Syst. Sci., 12, 1179-1183, 2012.

K. Eftaxias, Are There Pre-Seismic Electromagnetic Precursors? A Multidisciplinary Approach, Earthquake Research and Analysis - Statistical Studies, Observations and Planning, Dr Sebastiano D'Amico (Ed.), ISBN: 978-953-51-0134-5, InTech, 2012.

G. Minadakis, S. M. Potirakis, C. Nomicos and K. Eftaxias, Linking electromagnetic precursors with earthquake dynamics: an approach based on nonextensive fragment and self-affine asperity models, Physica A, 391, 22322244, 2012. 

S. M. Potirakis, G. Minadakis, and K. Eftaxias., Analysis of electromagnetic pre-seismic emissions using Fisher Information and Tsallis entropy, Physica A, 391, 300306, 2012.

S. M. Potirakis, G. Minadakis, C. Nomicos, and K. Eftaxias., A multidisciplinary justification for traces of the last state of earthquake generation in preseismic electromagnetic emissions, Nat. Hazards Earth Syst. Sci., 11, 28592879, 2011.

G.Balasis, I. A. Daglis, A. Anastasiadis, C. Papadimitriou, M. Mandea and K. Eftaxias, Universality in solar flare, magnetic storm and earthquake dynamics using Tsallis statistical mechanics, Physica A, 390 (2011) 341-346, 2010.

Balasis, G., I. A. Daglis, A. Anastasiadis, and K. Eftaxias, Detection of dynamical complexity changes in Dst time series using entropy concepts and rescaled range analysis, IAGA Special Sopron Book Series: The Dynamic Magnetosphere, Springer, 3, Part 3, 211-220, 2011.

Y. Contoyiannis, C. Nomicos, J. Kopanas, G. Antonopoulos, L. Contoyianni, and K. Eftaxias, Critical features in electromagnetic anomalies detected prior to the L'Aquila earthquake, Physica A, 389, 499-508, 2010.

K. Eftaxias, G. Balasis, Y, Contoyiannis, C. Papadimitriou, M. Kalimeri, J. Kopanas, G. Antonopoulos, and C. Nomicos, Unfolding the procedure of characterizing recorded ultra low frequency, kHZ and MHz electromagnetic anomalies prior to the L'Aquila earthquake as pre-seismic ones. Part II, Nat. Hazards Earth Syst. Sci. 10, 275-294, 2010.

K. Eftaxias, L. Athanasopoulou, G. Balasis, M. Kalimeri, S. Nikolopoulos, Y, Contoyiannis, J. Kopanas, G. Antonopoulos, C. Nomicos, Unfolding the procedure of characterizing recorded ultra low frequency, kHZ and MHz electromagetic anomalies prior to the L'Aquila earthquake as pre-seismic ones. Part I, Nat. Hazards Earth Syst. Sci.., 9, 1953-1971, 2009.

G. Balasis, I. Daglis, C. Papadimitriou, M. Kalimeri, A. Anastasiadis, and K. Eftaxias, Dynamical complexity in Dst time series using non-extensive Tsallis entropy, Geophysical Research Letters, L14102, doi:10.1029/2008GL034743, 2008.

Kalimeri, M., Papadimitriou, K., Balasis, G., and Eftaxias, K., Dynamical complexity detection in pre-seismic emissions using nonadditive Tsallis entropy, Physica A, 387, 1161-1172-, 2008.

K., Papadimitriou, M. Kalimeri, and K. Eftaxias, Nonextensivity and universality in the earthquake preparation process, Physical Review E, 77, 36101, 2008.

N. Fytas, A. Malakis and K. Eftaxias, First-order transition features of the 3D bimodal random-field Ising model, Journal of Statistical Mechanics: Theory and Experiment, doi:10.1088/1742-5468/2008/03/P03015, 2008.