Origin of the usefulness of the natural-time representation of complex time series

被引：89
作者：
Abe, S [1 ]
Sarlis, NV
Skordas, ES
Tanaka, HK
Varotsos, PA
机构：
[1] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan
[2] Univ Athens, Dept Phys, Solid State Sect, Athens 15784, Greece
[3] Univ Athens, Dept Phys, Solid Earth Phys Inst, Athens 15784, Greece
[4] Tokai Univ, Earthquake Predict Res Ctr, Shizuoka 4248610, Japan
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.94.170601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The concept of natural time turned out to be useful in revealing dynamical features behind complex time series including electrocardiograms, ionic current fluctuations of membrane channels, seismic electric signals, and seismic event correlation. However, the origin of this empirical usefulness is yet to be clarified. Here, it is shown that this time domain is in fact optimal for enhancing the signals in time-frequency space by employing the Wigner function and measuring its localization property.
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页数：4
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