Deep Structure of the Northwestern Termination of the Caucasus from New Geological and Geophysical Data

Рогожин, Е. А.; Горбатиков, А. В.; Stepanova, M. Yu.; Kharazova, Yu. V.; Sysolin, A. I.; Андреева, Н. В.; Pogrebchenko, V. V.; Chervinchuk, S. Yu.; Chen, Jie; Liu, Jiao; Ovsyuchenko, А. N.; Larkov, A. S.

doi:10.1134/s1069351320060075

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…The results of the data interpretation on geological and geophysical materials give an idea of the structure of geological elements, the localization of dilatancy areas and the changes occurring in them, which can be used in the construction of mathematical models. Other experimental methods for obtaining data on the crustal structures in the region are presented in [16][17][18][19][20].…”

Section: Discussionmentioning

confidence: 99%

About one method for studying monitoring data for modeling potential seismic sources

Mukhin,

Pavlova,

Telyatnikov

2024

E3S Web of Conf.

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Modeling a lumpy geological media using the theory of block structures and studying the conditions for the occurrence of resonance phenomena in the areas where blocks meet will make it possible to determine the locations of potential rearrangements associated with the development of natural disasters. In this paper we present a description of experimental data on the study of the Earth’s crust block structure used to construct a model for the propagation of slow deformation waves in the lithospheric structures of the region. Since the appearance of anomalies in the velocities of longitudinal waves indicates the emergence of geological rearrangements in the zone of a developing seismic event, a comprehensive method of active vibroseismic monitoring using a signal with linear frequency modulation and a harmonic signal is proposed to identify dilatant-type structures.

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Section: Discussionmentioning

confidence: 99%

About one method for studying monitoring data for modeling potential seismic sources

Mukhin,

Pavlova,

Telyatnikov

2024

E3S Web of Conf.

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“…The deep structure of this zone is highly complicated and poorly known. Within this zone, the mountain edifice of the Greater Caucasus plunges beneath the Late Paleogene-Quaternary deposits of the Taman folded zone and West Kuban foreland basin (Rogozhin et al 2020). The main part of the earthquake epicenters in this zone are located on the Black Sea shelf.…”

Section: Coda Q Regionalizationmentioning

confidence: 97%

“…The main part of the earthquake epicenters in this zone are located on the Black Sea shelf. Rogozhin et al (2020) shows that the high-Q layers of crystalline basement are located beneath the periclinal closure of the orogen of Great Caucasus and beneath the Taman Peninsula. The crystalline basement located at the depths below 10 km under the central part of the orogen submerges in the western direction beneath the low-Q deposits of the Kerch-Taman trough and is traced to underneath the northern shelf of the Black Sea.…”

Section: Coda Q Regionalizationmentioning

confidence: 99%

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Regional variation of coda Q in Northwest Caucasus

2023

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Coda Q has been studied in the North-West Caucasus region using 267 earthquakes and 17 stations from the network of the Geophysical Survey, Russian Academy of Sciences. This is the first Qc study for the region using such a large dataset. The average frequency-dependent coda Q relationship is Qc=90±21•f 1.02±0.11 . This value compares closely to other similar tectonic areas in the world where the same processing parameter had been used. Three specific zones, two in the Greater Caucasus tectonic area and one east of the Ciscaucasian trough area, were studied separately. There was a clear difference in Qc between the zones, particularly for the Ciscaucasian trough area which shows a higher Qc than the 2 other zones. However, the difference between the zones became smaller when using long lapse times tending to give a constant Qc as a function of lapse time. For longer lapse time it is assumed that a large part of the coda waves passes the mantle. The 2 zones in Greater Caucasus now had a similar Qc while the East zone in the Ciscaucasian trough still gave the highest values. We contribute this difference to differences in attenuation in the mantle under the two tectonic areas. In our area, there is then a clear difference in Qc for the 3 study areas in the crust but in the mantle the difference is mainly between the two tectonic zones.

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Seismic Deformations at the Ancient Settlement of Raevskoe and Seismotectonics of the Northwestern Caucasus

Ovsyuchenko,

Korzhenkov,

Malyshev

et al. 2023

Izv. Atmos. Ocean. Phys.

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Deep Structure of the Northwestern Termination of the Caucasus from New Geological and Geophysical Data

Cited by 8 publications

References 14 publications

About one method for studying monitoring data for modeling potential seismic sources

About one method for studying monitoring data for modeling potential seismic sources

Regional variation of coda Q in Northwest Caucasus

Seismic Deformations at the Ancient Settlement of Raevskoe and Seismotectonics of the Northwestern Caucasus

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