%0 Journal Article %@ 1873-2119 %A Vallianatos, F %A Michas, G %A Benson, P %A Sammonds, P %D 2013 %F discovery:10117709 %I ELSEVIER %J Physica A: Statistical Mechanics and its Applications %K Natural time analysis, Acoustic emissions, SeismicityFracture %N 20 %P 5172-5178 %T Natural time analysis of critical phenomena: The case of acoustic emissions in triaxially deformed Etna basalt %U https://discovery.ucl.ac.uk/id/eprint/10117709/ %V 392 %X 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. %Z This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.