Charles Richter's observation that'only fools and charlatans predict earthquakes,'reflects the
fact that despite more than 100 years of effort, seismologists remain unable to do so with …

We aim at giving a short review of the seismo-associated phenomena detected on ground
that in recent years have been investigated as possible earthquake precursors. The paper …

The quest for more efficient real-time detection of anomalies in time series data is critically
important in numerous applications and systems ranging from intelligent transportation …

Nowcasting is a term originating from economics and finance. It refers to the process of
determining the uncertain state of the economy or markets at the current time by indirect …

We report a similarity of fluctuations in equilibrium critical phenomena and nonequilibrium
systems, which is based on the concept of natural time. The worldwide seismicity as well as …

The correlations within the time series of the seismic electric signal (SES) activities have
been studied in a previous paper [P. Varotsos, N. Sarlis, and E. Skordas, Phys. Rev. E 66 …

Three types of electric signals were analyzed: Ion current fluctuations in membrane
channels (ICFMC), Seismic electric signals activities (SES), and “artificial” noises (AN). The …

A quantity exists by which one can identify the approach of a dynamical system to the state
of criticality, which is hard to identify otherwise. This quantity is the variance of natural time χ …

Natural time analysis reveals novel dynamical features hidden behind time series in
complex systems. By applying it to the time series of earthquakes, we find that the order …

We propose a new machine learning‐based method for nowcasting earthquakes to image
the time‐dependent earthquake cycle. The result is a timeseries that may correspond to the …