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 …

We analyze retrospectively/prospectively the transient variations of six different physical
parameters in the atmosphere/ionosphere during the M7. 8 and M7. 3 earthquakes in Nepal …

Monitoring atmospheric concentrations of greenhouse gases (GHGs) like carbon dioxide
and methane in near real time and with good spatial resolution is crucial for enhancing our …

We study the sub-ionospheric VLF transmitter signals recorded by the Austrian Graz station
in the year 2020. Those radio signals are known to propagate in the Earth-ionosphere …

The amplitude of Very Low Frequency (VLF) transmissions propagating from transmitter to
receiver between the Earth's surface and the ionospheric D-region is a useful measurement …

In this work we present the statistical and criticality analysis of the very low frequency (VLF)
sub-ionospheric propagation data recorded by a VLF/LF radio receiver which has recently …

The ionospheric D-region affects propagation of electromagnetic waves including ground-
based signals and satellite signals during its intensive disturbances. Consequently, the …

In this paper, we complete pioneering research that indicates the very low frequency (VLF)
signal amplitude and phase noise reductions, and short-period wave excitations and …

Abstract VLF/LF (20-300 kHz) radio waves propagation is affected by different factors such
as meteorological conditions, solar bursts and geomagnetic activity. At the same time …

This study is a continuation of pilot research on the relationships between seismic activity
and changes in very low frequency (VLF) signals starting a few minutes or a few dozen …