TY - JOUR IS - 20 EP - 5178 TI - Natural time analysis of critical phenomena: The case of acoustic emissions in triaxially deformed Etna basalt SN - 1873-2119 AV - public KW - Natural time analysis KW - Acoustic emissions KW - SeismicityFracture N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. N2 - Acoustic emissions exhibit complex correlations between space, time, and magnitude. As such, they present a unique example for a complex time series. We apply the recently introduced method of natural time analysis, which enables the detection of long-range temporal correlations even in the presence of heavy tails and find that the acoustic emissions exhibits features similar to that of other equilibrium or non-equilibrium critical systems such as worldwide seismicity as presented in the Centennial earthquake catalogue which includes global seismicity events with magnitude . These results support the universal behaviour of the fracturing processes from the laboratory to the global scale. ID - discovery10117709 UR - https://doi.org/10.1016/j.physa.2013.06.051 Y1 - 2013/10/15/ JF - Physica A: Statistical Mechanics and its Applications A1 - Vallianatos, F A1 - Michas, G A1 - Benson, P A1 - Sammonds, P PB - ELSEVIER VL - 392 SP - 5172 ER -