کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1876222 | 1532124 | 2013 | 15 صفحه PDF | دانلود رایگان |
This paper addresses the issues of self-organised critical behaviour of soil-radon and MHz-electromagnetic disorders during intense seismic activity in SW Greece. A significant radon signal is re-analysed for environmental influences with Fast Fourier Transform and multivariate statistics. Self-organisation of signals is investigated via fractal evolving techniques and detrended fluctuation analysis. New lengthy radon data are presented and analysed accordingly. The data did not show self-similarities. Similar analysis applied to new important concurrent MHz-electromagnetic signals revealed analogous behaviour to radon. The signals precursory value is discussed.
► New radon–MHz signals for an area with peculiar radon disorders on 2008.
► Use of spectrograms-multivariate statistics in analysing environmental parameters.
► Spectral fractal techniques and Detrended Fluctuation Analysis in all signals.
► Pre-earthquake signals followed fractional Brownian motion model.
► Hurst analysis showed persistent–antipersistent self-organised critical patterns.
Journal: Applied Radiation and Isotopes - Volume 72, February 2013, Pages 39–53