Multifractal variability in geoelectrical signals and correlations with seismicity : a study case in southern Italy
Multifractal variability in geoelectrical signals and correlations with seismicity : a study case in southern Italy
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DOI：
10.3390/vibration4010001
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发表时间：
2005
期刊：
影响因子：
2
通讯作者：
L. Telesca;G. Colangelo;V. Lapenna
中科院分区：
文献类型：
--
作者：
L. Telesca;G. Colangelo;V. Lapenna
多重分形波动的时间动态的地电数据，记录在南部意大利的地震区，已被发现使用多重分形去趋势波动分析（MF-DFA），它允许检测多重分形非平稳信号。我们的研究结果表明，地电时间序列，记录在亚平宁链南部（意大利）地震区，是多重分形。多重分形的时间演化表明，地震发生前多重分形度增加。本研究旨在提出另一种方法来研究与地震有关的地电信号的复杂动力学。
Multifractal fluctuations in the time dynamics of geoelectrical data, recorded in a seismic area of southern Italy, have been revealed using the Multifractal Detrended Fluctuation Analysis (MF-DFA), which allows to detect multifractality in nonstationary signals. Our findings show that the geoelectrical time series, recorded in the seismic area of southern Apennine Chain (Italy), is multifractal. The time evolution of the multifractality suggests that the multifractal degree increases prior the occurrence of earthquakes. This study aims to propose another approach to investigate the complex dynamics of earthquake-related geoelectrical signals.