摘要： •The Fisher–Shannon method is applied to resistivity time series.•The reliability of resistivity estimates is assessed.•Day-time resistivity shows higher level of disorder than night-time.•The informational methods reveal anthropic source in high frequency band. We used the informational methods of the Shannon entropy power and the Fisher Information Measure to analyze the time dynamics of one year of semi-daily values of apparent resistivity, calculated on the base of the magnetotelluric (MT) monitoring at Penghu Island, Taiwan. The performed statistics indicate that the day-time measurements present higher disorder and lower organization than the night-time measurements. Such difference is more evident for the high-frequency band of resistivity data, which suggests that possibly some source of the electromagnetic field could be of anthropic origin. Furthermore, we also note the characteristics of so-called MT dead-band with the periodicity of ∼10 s could be revealed in the high values of Shannon entropy power. 出版者： Elsevier Ltd 出版日期： 2013-11-15 出處： Journal of Asian earth sciences, 2013-11, Vol.77, p.77-82 資源來源： Elsevier ScienceDirect Journals AutoHoldings 版權： 2013 Elsevier Ltd 識別號： ISSN: 1367-9120 識別號： EISSN: 1878-5786 識別號： DOI: 10.1016/j.jseaes.2013.08.010
