Dynamic processes in the system of interacting geospheres at the Earth’s crust-atmosphere boundary

Адушкин, В. В.; Спивак, А. А.; Кишкина, С. Б.; Локтев, Д. Н.; Solov'ev, S.P.

doi:10.1134/s1069351306070044

Cited by 23 publications

(10 citation statements)

References 3 publications

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“…The lithospheric-atmospheric effect manifests the most in seismically active regions at the filal stage of earthquake preparation [1]. The high interest to the joint research of seismically active wave processes is determined by the fact that acoustic waves of infrasonic range can propagate at large distances and reach ionospheric heights under favorable conditions (weak attenuation and scattering, weak refraction in the atmosphere) [2].…”

Section: Introductionmentioning

confidence: 99%

Complex atmospheric-lithospheric observations of acoustic emission at «Karymshina» site in Kamchatka

Larionov

2017

E3S Web Conf.

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Abstract. The results of complex observations of acoustic emission in the near surface rocks and in the atmosphere by the ground surface are described. The instrumentations for the observations are a laser strainmeter-interferometer and a microbarometer installed close to each other. It was shown that during the increase of deformation rate in the near surface rocks, increase of acoustic emission intensity in the atmosphere by the ground surface is registered. The effect of meteorological factors on the observation results is evaluated.

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Section: Introductionmentioning

confidence: 99%

Complex atmospheric-lithospheric observations of acoustic emission at «Karymshina» site in Kamchatka

Larionov

2017

E3S Web Conf.

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“…In the present work, synchronous instrumental observations over seismic signals and geomagnetic field variations were performed in faults of hard rocks in the restricted zone of Muruntau open pit (Uzbeki stan), and in the zones of tectonic faults that feather the Nelidovo Ryazan tectonic structure (NRTS), which is located within the limits of the Moscow syn eclise [9].…”

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“…At weaker seismic disturbances, geomagnetic field variations are of the "glimmer" character, and the relative frequency of appearance of the effect drops as the seismic wave amplitude decreases making up about 50% in a range of 1-5 µm/s. The quantitative dependence between the maximal value of the full vector of variations in geomagnetic field induction in the fault zone and the amplitude of the seismic disturbance has been found for the first time.The heterogeneity of the medium structure, the presence of discontinuity boundaries between rocks of varied material composition, the presence of zones where the medium is ruptured or has a different stress strain state-all these points on aggregate-provide the appearance of electromagnetic effects in the field of seismic variations [1,6,7,9].Study of magnetic signals during the movement of seismic waves through large tectonic structures in the crust (fault zones) is of great interest.The practical value of study of magnetic effects in crustal discontinuity zones is related to possible cre ation of modern methods for diagnostics and control of the physical-mechanical state in local parts of the Earth's crust when choosing construction locations and safe maintenance of objects of special importance and elevated risk.In the present work, synchronous instrumental observations over seismic signals and geomagnetic field variations were performed in faults of hard rocks in the restricted zone of Muruntau open pit (Uzbeki stan), and in the zones of tectonic faults that feather the Nelidovo Ryazan tectonic structure (NRTS), which is located within the limits of the Moscow syn eclise [9].Magnetic field induction was measured utilizing G 856 proton magnetometers (GEOMETRICS) and MIN induction magnetometers (developed by the Institute of Geosphere Dynamics, Russian Academy of Sciences) [10]. Converting sensors were placed in antivibration hangers, at a height of about 2 m above the ground.…”

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confidence: 99%

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Geomagnetic field variations in seismic waves traveling across a fault

2012

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It is known that seismic waves traveling in the Earth's crust are accompanied by electromagnetic effects [1][2][3]. The probable ways how electric and magnetic signals are generated are under discussion [4][5][6][7][8].One of the most important factors determining the electromagnetic effects in the Earth's crust is the het erogeneous structure of the crust [1,7].The present paper gives the results of regular instru mental observations over geomagnetic field variations in the zones of influence of tectonic faults during trav eling of seismic waves of varied intensity. It has been shown that seismic waves with an amplitude more than 5-10 µm/s, traveling across a fault zone, always pro duced geomagnetic field variations. At weaker seismic disturbances, geomagnetic field variations are of the "glimmer" character, and the relative frequency of appearance of the effect drops as the seismic wave amplitude decreases making up about 50% in a range of 1-5 µm/s. The quantitative dependence between the maximal value of the full vector of variations in geomagnetic field induction in the fault zone and the amplitude of the seismic disturbance has been found for the first time.The heterogeneity of the medium structure, the presence of discontinuity boundaries between rocks of varied material composition, the presence of zones where the medium is ruptured or has a different stress strain state-all these points on aggregate-provide the appearance of electromagnetic effects in the field of seismic variations [1,6,7,9].Study of magnetic signals during the movement of seismic waves through large tectonic structures in the crust (fault zones) is of great interest.The practical value of study of magnetic effects in crustal discontinuity zones is related to possible cre ation of modern methods for diagnostics and control of the physical-mechanical state in local parts of the Earth's crust when choosing construction locations and safe maintenance of objects of special importance and elevated risk.In the present work, synchronous instrumental observations over seismic signals and geomagnetic field variations were performed in faults of hard rocks in the restricted zone of Muruntau open pit (Uzbeki stan), and in the zones of tectonic faults that feather the Nelidovo Ryazan tectonic structure (NRTS), which is located within the limits of the Moscow syn eclise [9].Magnetic field induction was measured utilizing G 856 proton magnetometers (GEOMETRICS) and MIN induction magnetometers (developed by the Institute of Geosphere Dynamics, Russian Academy of Sciences) [10]. Converting sensors were placed in antivibration hangers, at a height of about 2 m above the ground. The preliminary testing of sensors at PSGU and PSVU verifying seismometric installments (developed by the experimental design office of the Institute of Physics of the Earth, Russian Academy of Sciences) had indicated the absence of seismic induc tion on magnetometers in the frequency range of 0.1-20 Hz at various amplitude of no more than 10 -2 m/s for a G 856 sensor and 10 -4 m/...

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“…The interaction and transformation of geophysical fields in the surface regions of the Earth's crust is of special interest for distinguishing the nature and mechanisms of intergeospheric interactions and determining the influence of the geophysical field on the environment [1,2]. The field of natural seismic oscillations of the Earth's crust reflecting the degree of stability of its specific parts (for example, active facture zones, mobility of the block system, etc.)…”

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confidence: 99%