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Sudden drop of fractal dimension of electromagnetic emissions recorded prior to significant earthquake

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Abstract

The variation of fractal dimension and entropy during a damage evolution process, especially approaching critical failure, has been recently investigated. A sudden drop of fractal dimension has been proposed as a quantitative indicator of damage localization or a likely precursor of an impending catastrophic failure. In this contribution, electromagnetic emissions recorded prior to significant earthquake are analysed to investigate whether they also present such sudden fractal dimension and entropy drops as the main catastrophic event is approaching. The pre-earthquake electromagnetic time series analysis results reveal a good agreement to the theoretically expected ones indicating that the critical fracture is approaching.

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Authors and Affiliations

  1. Department of Electronics, Technological Education Institute (TEI) of Piraeus, 250 Thivon & P. Ralli, 12244, Aigaleo, Athens, Greece

    S. M. Potirakis

  2. Department of Electronic and Computer Engineering, Brunel University Uxbridge, Middlesex, UB8 3PH, UK

    G. Minadakis

  3. Department of Physics, Section of Solid State Physics, University of Athens, Panepistimiopolis, 15784, Zografos, Athens, Greece

    K. Eftaxias

Authors
  1. S. M. Potirakis
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  2. G. Minadakis
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  3. K. Eftaxias
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Correspondence to K. Eftaxias.

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Potirakis, S.M., Minadakis, G. & Eftaxias, K. Sudden drop of fractal dimension of electromagnetic emissions recorded prior to significant earthquake. Nat Hazards 64, 641–650 (2012). https://doi.org/10.1007/s11069-012-0262-x

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  • DOI: https://doi.org/10.1007/s11069-012-0262-x

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