Signatures of the self-affinity of fracture and faulting in pre-seismic electromagnetic emissions
S. M. Potirakis1, K. Eftaxias2, G. Balasis3, J. Kopanas2, G. Antonopoulos4, and A. Kalimeris41Department of Electronics Engineering, Technological Education Institute (TEI) of Piraeus, 250 Thivon & P. Ralli, 12244, Aigaleo, Athens, Greece 2Department of Physics, Section of Solid State Physics, University of Athens, Panepistimiopolis, 15784, Zografos, Athens, Greece 3Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, I. Metaxa & Vas. Pavlou St., 15236 Penteli, Greece 4Department of Environmental Technology and Ecology, Technological Education Institute (TEI) of the Ionian Islands, Panagoulas road, 29100, Zante, Greece
Received: 14 Jan 2014 – Accepted for review: 14 Apr 2014 – Discussion started: 30 Apr 2014
Abstract. Of particular interest is the detection of precursors of an impending rupture. Theoretical, numerical studies along with laboratory experiments indicate that precursory signs of an impending failure are the sudden drop of fractal dimension and entropy, along with the anticorrelated, for large system sizes, rising of Hurst exponent and drop of a frequency–size power-law scaling exponent. Based on the widely accepted concept of the self-affine nature of faulting and fracture, we examine whether these precursory signs exist in the fracto-electromagnetic emissions resulting from the activation of a single fault.
Potirakis, S. M., Eftaxias, K., Balasis, G., Kopanas, J., Antonopoulos, G., and Kalimeris, A.: Signatures of the self-affinity of fracture and faulting in pre-seismic electromagnetic emissions, Nat. Hazards Earth Syst. Sci. Discuss., 2, 2981-3013, doi:10.5194/nhessd-2-2981-2014, 2014.