Sep 14, 2017Open AccessArticle
In this document, with the purpose of strengthening more in the knowledge of the previous events on the earthquakes, the possible connection between
natural voltage and electromagnetic energy emanating from the inner layers of
the Earth and the seismic activity in the Mexican seismic coastal border, is
evaluated, through an indirect estimation of the statistical analysis of
natural water conductivity data (μS/cm) and the seismic a
Mar 28, 2017Open AccessArticle
of the precursor of the tectonic earthquake in the telluric current is carried
out on the basis of the main equations of the telluric current and the theory
of preparation of the tectonic earthquake. Results do not contradict data of
field observations. Methodical significance of work is especially important.
Mar 09, 2016Open AccessArticle
The aim of the present article was to analyze features of interactions
between an interplanetary shock wave and the magnetosphere on the basis of
comparative analysis of geomagnetic variations observed during a sudden
commencement (SC) by satellites and ground-based stations with high time
resolution. A case study of the interaction of an interplanetary shock wave (ISW)
with the magnetosphere was carried out on April 23, 2012. Statistical analysis
was based on 11 SC events occurring from 1988 to...
Dec 23, 2015Open AccessArticle
We demonstrate in this paper that periodic variations of the J2 gravity coefficient of a
planet induce small cumulative perturbations on a given family of circular
equatorial orbits, and that these perturbations could be measurable with
current radiosciences technology. For this purpose, we first consider a
Poincaré expansion of the Newtonian equations of motion. Then, by using Floquet’s
theory, we demonstrate that, unlike the excitation mechanism, the perturbations
are non- pe...
Nov 09, 2015Open AccessArticle
The mode of definition of the error at polynomial Richardson’s
extrapolation is described. Along with the table of extrapolations the new
magnitudes reflecting expediency and efficiency of extrapolation are entered. On
concrete examples it is shown that application of Richardson’s extrapolation to
a solution of integral equations has appeared rather effective and gives a
solution with a high exactitude. Application of formulas of interpolation leads
to a solution in the analytical aspect.
Jul 08, 2015Open AccessArticle
The homogeneous system of the equations of the linear theory of
elasticity for the isotropic environment with one-dimensional continuous
heterogeneity is considered. Bidimensional transformation Fourier is applied
and the problem for images is led to the ordinary differential equations.
Generally, the differential equations are transformed in integro-differential
and the algorithm of such transformation is resulted. Solutions of specific
problems are resulted.
Jun 09, 2015Open AccessArticle
In this paper, presentation of specific features of TEC behaviour as a possible
precursor of Orkney earthquake of August 5th, 2014 (M5.5) was made. To achieve this,
TEC data from Suth station and GIM TEC maps were used. The period understudied (prior
to and after the earthquake) experienced quiet geomagnetic situation which made
the analysis much easier. A characteristic anomaly was noticed from 4 days before
the earthquake and it was found out that the day-time TEC increases significantly and c...
Jun 05, 2015Open AccessArticle
Ionospheric variability resulting from earthquake events is a known
phenomenon as revealed by various seismo-ionospheric coupling studies.
Variations resulting from seismo-ionospheric couplings are known to be much
weaker, and noted to occur only locally in an area that is specified by the
magnitude of the earthquake. Whereas disturbances generated by other sources
like geomagnetic storms, exhibit a more global behaviour. For this study,
GPS-TEC data of 31 days (15 days before and 15 days after ...
Jun 01, 2015Open AccessArticle
Recently ionospheric variability remains one of the most intensive
studies in the area of ionospheric physics. Despite the massive improved
knowledge of its dynamics, the ability to use this data to provide early, as
well as valid warning of upcoming earthquakes (seismo-ionospheric coupling) is
still controversial. However, anomalous behaviours of TEC in the ionosphere
before the occurrence of earthquakes have received several attentions by
scientists. In this paper, GPS-TEC variations of 31 day...
Feb 26, 2015Open AccessArticle
The most typical old question that scientist struggle with is the exact age
of the earth. Accepted earth’s age is about 4.54 billion years (plus or minus about
1%) which derives from several lines of evidence with many involved assumptions.
Furthermore this age could not be computed directly and solely from the earth and
its determinant properties without contemplate suppositions. Also no scientific
method can prove earth’s actual age and the exact accretion time of earth as yet.
In this paper e...