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arXiv physics/0510215physics.geo-phphysics.data-an
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地震电信号的熵:时间反演下的自然时间分析

Entropy of seismic electric signals: Analysis in natural time under time-reversal

P. A. Varotsos, N. V. Sarlis, E. S. Skordas, H. K. Tanaka

摘要:

最近在地球表面记录到的电信号,其幅度比迄今为止报道的要大得多。它们在自然时间内的熵小于“均匀”分布的熵,即$S_u$。这同样适用于它们在时间逆转时的熵。如fBm时间序列和开-关不稳定性模型中的数值模拟所支持的,这种行为源于无限范围的长范围时间相关性,因此这些信号可能是地震电信号(临界动态)。熵的波动被发现时,接近爆发,这提醒行为识别心脏性猝死的人时,分析他们的心电图。

英文摘要:

Electric signals have been recently recorded at the Earth's surface with amplitudes appreciably larger than those hitherto reported. Their entropy in natural time is smaller than that, $S_u$, of a ``uniform'' distribution. The same holds for their entropy upon time-reversal. This behavior, as supported by numerical simulations in fBm time series and in an on-off intermittency model, stems from infinitely ranged long range temporal correlations and hence these signals are probably Seismic Electric Signals (critical dynamics). The entropy fluctuations are found to increase upon approaching bursting, which reminds the behavior identifying sudden cardiac death individuals when analysing their electrocardiograms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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