期刊
APPLIED RADIATION AND ISOTOPES
卷 72, 期 -, 页码 39-53出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2012.09.005
关键词
Radon in soil; Electromagnetic MHz; Earthquakes; Fractals; Detrended-fluctuation analysis; Hurst exponent
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. (C) 2012 Elsevier Ltd. All rights reserved.
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