Complex geological-geophysical study of active faults in the Sochi-Krasnaya Polyana region

Ovsyuchenko, А. N.; Khil’ko, A. V.; Шварев, С. В.; Kostenko, K. A.; Мараханов, А. В.; Рогожин, Е. А.; Новиков, С. С.; Larkov, A. S.

doi:10.1134/s1069351313060116

Cited by 8 publications

(5 citation statements)

References 1 publication

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“…Evidences of an upsurge of tectonic activity in the region around June 30, 1908 were already presented in [Ol'khovatov, 2003;2022]. For example, on July 5 near the settlement of Bratskoe there was a rare (for the region) earthquake M~3.5 [Ovsyuchenko, et al 2007]. And the upsurge manifested not only in seismic phenomena over large region, but also in the following way.…”

Section: Fig5mentioning

confidence: 96%

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New data on accounts of the 1908 Tunguska event

Ol'khovatov¹

2020

Terra Nova

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There has been a longstanding debate about the nature of the 1908 Tunguska event.Many eyewitness accounts were collected more than half of a century after the event. Among these are many second-hand oral accounts after the generation of eyewitnesses faded away. However, several years ago, two valuable publications appeared containing first-hand eyewitness accounts collected by a Russian ethnographer, Sev'yan Vainshtein, during an expedition to the settlement of Sulomay in 1948. This paper presents additional details of these accounts, based on the author's discussions with Vainshtein before he died in 2008, and demonstrates how these accounts shed new light on what happened in Tunguska in June 1908.

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Section: Fig5mentioning

confidence: 96%

“…It is interesting to note that about June 30, 1908 there was an upsurge of tectonic activity in the Tunguska event region [Ol'khovatov, 2003] which is generally almost aseismic. For example, on July 5 near Bratskoe there was unusually strong (for the region) earthquake M~3.5 [Ovsyuchenko, et al 2007].…”

Section: Fiery Ballsmentioning

confidence: 99%

New data on accounts of the 1908 Tunguska event

Ol'khovatov¹

2020

Terra Nova

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“…Если традиционные геофизические методы (гравиметрические, магнитометрические, сейсмические, электроразведочные), как правило, всегда используются для изучения глубинного строения в комплексе в различных соотношениях, то измерение объемной активности радона и использование полей микросейсм стало популярным в последнее время в связи с эффективностью их применения [25][26][27]. Предлагаемый комплекс ранее был успешно применен при исследованиях глубинного строения Кировско-Кажимского и Печоро-Колвинского авлакогенов [28].…”

Section: результаты и обсуждениеunclassified

Results of geophysical researches of the West Timan fault

Удоратин¹,

Magomedova²,

Ezimova³

2020

Proceedings Komi SC UD RAS

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“…The last strong earthquake, which triggered widespread distributed landslides, was thought to occur about 600 years ago [35]. The active faults of the Sochi region include Main Caucasian, Bekisheiskii, Krasnopolyanskii, Monastyrskii and Sochinskii faults [30]. All these active faults are reverse faults, except that the Main Caucasian is a thrust fault.…”

Section: Geotectonic and Seismic Conditions Of The Regionmentioning

confidence: 99%

“…In this study, the Spencer method [28], which is a limit equilibrium method, was applied to calculate the slope safety factors (Fs) with the help of commercial program GeoStudio. The region includes several active faults, with the predicted maximum magnitude of earthquakes M max = 7.3 [29,30]. Due to high intensity of the territory seismicity, the seismic effect on slope stability should be taken into account.…”

Section: Introductionmentioning

confidence: 99%

Shallow Landslide Susceptibility Mapping in Sochi Ski-Jump Area Using GIS and Numerical Modelling

Kang

Ponomarev

Зеркаль

et al. 2019

IJGI

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The mountainous region of Greater Sochi, including the Olympic ski-jump complex area, located in the northern Caucasus, is always subjected to landslides. The weathered mudstone of low strength and potential high-intensity earthquakes are considered as the crucial factors causing slope instability in the ski-jump complex area. This study aims to conduct a seismic slope instability map of the area. A slope map was derived from a digital elevation model (DEM) and calculated using ArcGIS. The numerical modelling of slope stability with various slope angles was conducted using Geostudio. The Spencer method was applied to calculate the slope safety factors (Fs). The pseudostatic analysis was used to compute Fs considering seismic effect. A good correlation between Fs and slope angle was found. Combining these data, sets slope instability maps were achieved. Newmark displacement maps were also drawn according to empirical regression equations. The result shows that the static safety factor map corresponds to the existing slope instability locations in a shallow landslide inventory map. The seismic safety factor maps and Newmark displacement maps may be applied to predict potential landslides of the study area in the case of earthquake occurrence.

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Complex geological-geophysical study of active faults in the Sochi-Krasnaya Polyana region

Cited by 8 publications

References 1 publication

New data on accounts of the 1908 Tunguska event

New data on accounts of the 1908 Tunguska event

Results of geophysical researches of the West Timan fault

Shallow Landslide Susceptibility Mapping in Sochi Ski-Jump Area Using GIS and Numerical Modelling

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