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Wavelet analysis of paleomagnetic data: 3. Wavelet analysis of the basic series of archaeomagnetic data on the geomagnetic field intensity for the past 7500 years
Pleiades Publishing Ltd - Tập 45 - Trang 527-538 - 2009
We performed wavelet analysis of series of the magnetic field intensity obtained
through archaeomagnetic studies in Bulgaria, Georgia, Central Asia, China, and
Japan. The duration of the studied intervals is 2000, 4000, and more than 7000
yrs. It has been shown that periodic oscillations as well as those with varying
characteristic times are present in this series. The distribution of
oscillations...
On the Correlation of Earthquakes with Geomagnetic Storms
Pleiades Publishing Ltd - Tập 57 - Trang 994-998 - 2021
Abstract—In response to the kind invitation of the Editorial Board of the
journal “Izvestiya, Physics of the Solid Earth” to take part in the discussion
concerning the methodology of statistical study of correlations between
geophysical processes, we have done a small research and written this paper.
Being predominantly geomagnetologists, we focused on the topical question of a
correlation between...
The Character of Evolution of Rock Fracture Processes from Observations of Acoustic Emission and Time Variations in Radon Volumetric Activity
Pleiades Publishing Ltd - Tập 56 - Trang 425-436 - 2020
Laboratory experiments on monitoring the acoustic emission signals and time
variations of volumetric activity of radon during uniaxial loading of a granite
sample up to its fracture have been carried out. Based on the results of the
experiments, the amplitude-frequency spectra of acoustic emission are
constructed for four successive time instants. Based on the quantitative
interpretation of the da...
Crater ejecta: Markers of impact catastrophes
Pleiades Publishing Ltd - Tập 48 Số 3 - Trang 241-255 - 2012
Structure formation in the rift zones and in the tranvers offset of the spreading axes: Results of physical modeling
Pleiades Publishing Ltd - Tập 46 - Trang 412-418 - 2010
The paper presents the results of experimental modeling of the specific features
in the structure formation within the rift zones and also within lateral
displacements of the spreading axes such as transform faults and nontransform
displacements. The experiments were conducted on materials consisting of liquid
and solid hydrocarbons; the similarity conditions were taken into account. The
parameter...
Petromagnetic and paleomagnetic study of Jurassic sedimentary rocks of the southeast of Russia
Pleiades Publishing Ltd - Tập 45 Số 6 - Trang 495-507 - 2009
Oscillatory regime of aftershocks of the 1984 Ddzhirgatal earthquake: Implications for the internal dynamics of an unstable geological system
Pleiades Publishing Ltd - Tập 42 - Trang 13-26 - 2006
On the basis of seismological and geological evidence, the aftereffect region of
the strong Dzhirgatal earthquake is localized as a real physical object. The
time dependence of the number of aftershocks of this earthquake is best
described by a simple hyperbolic law (p = 1, or the Omori law), which is well
consistent with the ideas of self-similarity of the material fracture and the
development of...
Acoustic emission phenomena due to plasticity of rocks
Pleiades Publishing Ltd - Tập 42 - Trang 809-814 - 2006
Acoustic emission patterns arising at the stage of plastic deformation (creep
and relaxation) of plastic and brittle rocks are discussed. It is suggested that
these patterns are related to the spatial localization of plastic deformation
and strain hardening of rocks under loads exceeding the yield strength.
Resonance of liquid core according to the data of tidal gravity observations in Talgar
Pleiades Publishing Ltd - Tập 45 - Trang 839-844 - 2009
The method of contrast separation of wavelets near the resonance frequency of
liquid core is proposed, based on the elimination of principle waves from the
series being analyzed with the subsequent automatic minimization of the noise
level and with the repeated spectral analysis of the residual curve. The
minimization of noise is achieved due to (1) the sliding spectral analysis with
automatic ste...
Approaches to the estimation of lateral heterogeneity of the upper mantle by electromagnetic methods
Pleiades Publishing Ltd - Tập 43 - Trang 245-250 - 2007
The paper addresses the construction of maps showing lateral distributions of
the apparent electrical conductivity in various time periods from data of the
worldwide network of observatories. The lateral distribution of the apparent
conductivity of the Earth is determined by a self-consistent estimation of
variations in three components of the geomagnetic field recorded at all
stations. The result...
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