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http://hdl.handle.net/2122/8597
Authors: | Vallianatos, F.* Nardi, A.* Carluccio, R.* Chiappini, M.* |
Title: | Experimental Evidence of a Non-Extensive Statistical Physics Behavior of Electromagnetic Signals Emitted from Rocks Under Stress up to Fracture. Preliminary Results | Journal: | Acta Geophysica | Series/Report no.: | 3 / 60 (2012) | Publisher: | Versita | Issue Date: | Jun-2012 | DOI: | 10.2478/s11600-012-0030-z | Keywords: | electromagnetic emissions non-extensive statistical physics rocks |
Subject Classification: | 04. Solid Earth::04.01. Earth Interior::04.01.04. Mineral physics and properties of rocks 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring |
Abstract: | The application of mechanical stress on a rock sample can induce electromagnetic emissions. Such emissions can be detected experimentally and in principle could be used as precursors of the upcoming failure. Using experimental observations of stress-induced electromagnetic emissions (SIEME), we apply the concepts of non-extensive statistical physics (NESP) to the time intervals between consecutive SIEME. The application of NESP is appropriate to systems such as fracture-induced effects, where non-linearity, long-range interactions and scaling are important. We find that the SIEME energy release distribution and the inter-event time distribution reflect a sub-extensive system with thermodynamic q-values of the order of qE = 1.67 and qτ ≈ 1.7, respectively. |
Appears in Collections: | Article published / in press |
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