Journal of Applied Geophysics, volume 181, pages 104144

Response of cracking processes in variations of geophysical fields

Publication typeJournal Article
Publication date2020-10-01
Quartile SCImago
Q2
Quartile WOS
Q3
Impact factor2
ISSN09269851
Geophysics
Abstract
This paper discusses a range of issues related to the interpretation of time variations of geophysical fields as a response of the geophysical environment to lunar-solar tidal influences and seismic events under conditions of submeridional compression. A model linking the mechanism of crack formation and generation of geophysical fields has been proposed. The concept of the energy characteristics of a seismic field of deep underground (endogenous) origin along the seismic wave field observed on the Earth's surface for three mutually perpendicular components has been introduced. The results of field studies of simultaneous recording of a seismic wave field by a three-component gradient system and a magnetotelluric field at monitoring sites of the Bishkek Geodynamic Proving Ground (BGPG in Northern Tien Shan) are presented. The test area is situated in an active intracontinental mountain Central Asian Orogenic Belt with the frequent seismicity. For the experiment purposes, we select the Ukok regime monitoring point in the Kochkor basin of Kyrgyz Tien Shan. Because the location is characterized by low-level of seismic noise and the technical-and-industrial influence. The applicability of such a joint approach in geophysics is discussed. According to the results of the experiments performed, we establish a possible causal relationship between lunar-solar tides and activation of the deep underground (endogenous) source. Based on the correlation analysis of gravitational tidal effects, and the results of magnetotelluric monitoring, the azimuthal dependence of the electrical conductivity of the medium was revealed. We detect characteristic changes in the studied electromagnetic parameters, which we identify as a result of the redistribution of fluids between the fracture systems, were. The joint analysis of data from regime magnetotelluric observations and seismicity distribution confirms the high sensitivity of the method to changes in the stress-strain state of the geological environment. The confinement of seismic events to zones with high gradients of variations of apparent electrical resistivity is shown. The work may be of interest to specialists in the field of Earth Sciences, dealing with the interpretation of experimental data from geophysical test sites. • Geophysical characteristics change over time and are associated with deformation processes. • The electrical resistivity variations in time are observed in orthogonal azimuths in experimental data for the Tien Shan. • The time-frequency series of electrical resistivity variations and its' circle diagrams are novelty of the work. • The experiment of the seismic gradient system proves the applicability of the approach for endogenous component extracting.

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Rybin A. et al. Response of cracking processes in variations of geophysical fields // Journal of Applied Geophysics. 2020. Vol. 181. p. 104144.
GOST all authors (up to 50) Copy
Rybin A., Bataleva E., Nepeina K. S., Matiukov V., Alexandrov P., Kaznacheev P. Response of cracking processes in variations of geophysical fields // Journal of Applied Geophysics. 2020. Vol. 181. p. 104144.
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TY - JOUR
DO - 10.1016/j.jappgeo.2020.104144
UR - https://doi.org/10.1016%2Fj.jappgeo.2020.104144
TI - Response of cracking processes in variations of geophysical fields
T2 - Journal of Applied Geophysics
AU - Rybin, Anatoly
AU - Bataleva, Elena
AU - Nepeina, Kseniia S.
AU - Matiukov, Vitalii
AU - Alexandrov, Pavel
AU - Kaznacheev, Pavel
PY - 2020
DA - 2020/10/01 00:00:00
PB - Elsevier
SP - 104144
VL - 181
SN - 0926-9851
ER -
BibTex
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BibTex Copy
@article{2020_Rybin,
author = {Anatoly Rybin and Elena Bataleva and Kseniia S. Nepeina and Vitalii Matiukov and Pavel Alexandrov and Pavel Kaznacheev},
title = {Response of cracking processes in variations of geophysical fields},
journal = {Journal of Applied Geophysics},
year = {2020},
volume = {181},
publisher = {Elsevier},
month = {oct},
url = {https://doi.org/10.1016%2Fj.jappgeo.2020.104144},
pages = {104144},
doi = {10.1016/j.jappgeo.2020.104144}
}
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