The state of the lithosphere in the junction zone of Tarim and Tien Shan according to the petrological interpretation of the magnetotelluric data

2013 ◽  
Vol 49 (3) ◽  
pp. 384-391 ◽  
Author(s):  
V. Yu. Batalev ◽  
E. A. Bataleva
Keyword(s):  
The State ◽  
Tien Shan ◽  
Junction Zone ◽  
Magnetotelluric Data

scholarly journals Correlation of the state of crustal stresses, seismicity and landslide activity (Fergana basin, Tien Shan)

2019 ◽  
Vol 10 (4) ◽  
pp. 995-1009
Author(s):  
Z. A. Kalmet’eva ◽  
B. D. Moldobekov ◽  
U. A. Abdybachaev
Keyword(s):  
Internal Structure ◽  
The State ◽  
Tien Shan ◽  
Stress Axis ◽  
Hazard Mapping ◽  
Upper Crust ◽  
Strong Earthquakes ◽  
Landslide Activity ◽  
Crustal Stresses ◽  
Local Stresses

The impacts of seismicity on the landslide activity in Kyrgyzstan have been in the focus of our study since 2010 [Kalmetyeva et al., 2010]. As the study progressed [Kalmetyeva, Moldobekov, 2012, 2013; Kalmetyeva et al., 2013, 2014], the initial problem statement has been revised as follows: do earthquake influence the occurrence of land‐ slides, and, if so, what is the mechanism of this influence. This paper presents the results of detailed analysis of the distribution of earthquakes and landslides in space and time in correlation with focal mechanisms (azimuth and plunge of the principal compression stress axis) of earthquakes occurred in the Fergana basin and its mountainous frame. These are grounds to conclude that the landslide activity is mainly influenced by the response of the internal structure of the upper crust to local stresses. The mechanism of influence of strong earthquakes on the landslide activity is redistribution of local stresses, which results from partial release of regional stresses due to rupturing in the source zones of strong earthquakes. Using this concept of the landslide activity, a methodology of landslide‐hazard mapping is the goal of our future studies aimed at the following: (1) zoning of the study area with respect to the features of the internal structure of the upper crust, (2) geological, geophysical and seismological studies of the state of stresses in the study area, (3) instrumental monitoring of landslides movements in the zones that differ in the structure of the upper crust, and (4) analysis of preparation and consequences of past strong earthquakes that took place in the study area in comparison with the landslide activity.

Geoelectric section of the Central Tien Shan: Sequential inversion of the magnetovariational and magnetotelluric data along the Naryn Line

2010 ◽  
Vol 46 (8) ◽  
pp. 698-706 ◽  
Author(s):  
M. N. Berdichevsky ◽  
N. S. Golubtsova ◽  
Iv. M. Varentsov ◽  
P. Yu. Pushkarev ◽  
A. K. Rybin ◽  
...  
Keyword(s):  
Tien Shan ◽  
Magnetotelluric Data ◽  
Geoelectric Section

Underthrusting of Tarim beneath the Tien Shan and deep structure of their junction zone: Main results of seismic experiment along MANAS Profile Kashgar-Song-Köl

Geotectonics ◽  
2010 ◽  
Vol 44 (2) ◽  
pp. 102-126 ◽  
Author(s):  
V. I. Makarov ◽  
D. V. Alekseev ◽  
V. Yu. Batalev ◽  
E. A. Bataleva ◽  
I. V. Belyaev ◽  
...  
Keyword(s):  
Deep Structure ◽  
Tien Shan ◽  
Junction Zone ◽  
Seismic Experiment

scholarly journals Analysis of the features of the spatio-temporal distribution of geoelectric inhomogeneities in the Earth’s crust and seismic events

2021 ◽  
Vol 254 ◽  
pp. 02003
Author(s):  
Elena Bataleva
Keyword(s):  
Temporal Distribution ◽  
Physical Nature ◽  
Tien Shan ◽  
Earth’S Crust ◽  
Seismic Events ◽  
Magnetotelluric Data ◽  
Geological Conditions ◽  
Spatio Temporal ◽  
Earth's Crust ◽  
The Relationship

The paper presents the results of experiments carried out at the regime points of magnetotelluric monitoring both on the territory of the Bishkek geodynamic test site (Northern Tien Shan) and on a series of monitoring profiles in various geological conditions. Previous studies indicate the relationship of variations in the electromagnetic and seismic fields, lunisolar tidal effects, seismic regime with the processes of fracturing. The purpose of this work is to establish the features of the relationship between the spatio-temporal distribution of seismicity and the distribution of geoelectric inhomogeneities in the Earth’s crust (fault-block tectonics of the region). Based on the analysis of the results of the interpretation of magnetotelluric data (2D inversion) and new detailed seismotomographic constructions, the verification of geoelectric models was carried out, the analysis of the distribution of hypocenters of seismic events was carried out. Special attention was paid to the confinement of earthquakes to listric fault structures. The relationship between the distribution of the hypocenters of seismic events and the spatial position of the electrical conductivity anomalies is confirmed by the authors explanation of the physical nature of the identified conducting structures, based on hypotheses of fluidization and partial melt of the Earth’s crust.

scholarly journals Current Epizootic Condition of Natural Plague Foci in Kyrgyz Republic and Measures Aimed at Provision of Epidemiological Welfare as regards Plague

2018 ◽  
pp. 45-48 ◽  
Author(s):  
S. T. Abdikarimov ◽  
E. Sh. Ibragimov ◽  
Ch. E. Egembergenov
Keyword(s):  
Epidemiological Data ◽  
The State ◽  
Tien Shan ◽  
High Mountain ◽  
Kyrgyz Republic ◽  
Risk Of Infection ◽  
Ministry Of Health ◽  
Natural Foci ◽  
Republican Center

Objective of the study is to characterize the mountain plague foci in Tien Shan and Pamir-Alai, to assess the results of the performed field disinsection activities, to describe the current epizootic condition of natural foci in Kyrgyz Republic and measures aimed at provision of epidemiological welfare as regards plague. Materials and methods. Archival epizootic and epidemiological data from the Republican Center of Quarantine and Particularly Dangerous Infections, Ministry of Health of Kyrgyz Republic, as well as copyright author’s materials were used for the analysis. Results and Conclusions. It is noted that following sanitation activities in 1971–1989, using deep disinsection of marmot burrows, epizootic activity of Tien Shan and Alai natural foci significantly decreased, up to long inter-epizootic periods. In the light of revitalization of high-mountain plague foci in Kyrgyz Republic, epizootiological monitoring of enzootic territories has been considerably strengthened, control over the state of populations of main agent carriers and vectors has been improved. In order to lower the risk of infection, 1750 km2 of the focal territories were treated twice, using deep disinsection of marmot burrows applying ecologically safe insecticides, in particular “Absolute-dust”.

scholarly journals Deep Structure of the Lithosphere in the Central Tien Shan along the Son-Kul Magnetotelluric Sounding Profile

2021 ◽  
Vol 496 (2) ◽  
pp. 101-106
Author(s):  
A. K. Rybin ◽  
E. A. Bataleva ◽  
V. E. Matiukov ◽  
Yu. A. Morozov ◽  
K. S. Nepeina
Keyword(s):  
Cross Section ◽  
Block Structure ◽  
Deep Structure ◽  
Tien Shan ◽  
Palm Tree ◽  
Localized Deformation ◽  
Magnetotelluric Data ◽  
Geological Interpretation ◽  
Quantitative Characteristics ◽  
Geological Substrate

Abstract New results of a detailed study of the deep structure of the Central Tien Shan along the Son-Kul magnetotelluric (MT) profile crossing the Son-Kul Lake are reported. Based on the results of magnetotelluric data modeling, the regional and local geoelectric anomalies in the lithosphere are studied and their quantitative characteristics are given. Geological interpretation of the geoelectric cross-section was carried out, which supported the existing ideas about the block–hierarchical structure of the upper part of the Earth’s crust. This corresponds to the tectonophysical concepts of the sequential inserted subordination of large and smaller elements of the zone–block structure consisting of stable blocks and limiting mobile zones, which are distinguished by the high dislocation of the geological substrate. The integral pattern of the distribution and morphology of zones of high electrical conductivity in this segment of the Central Tien Shan crust may reflect discretely localized palm tree–type structures associated with the evolution of transgressive suture zones of localized deformation during the Hercynian and Alpine tectogenesis.

Autonomous geodynamics of the Pamir–Tien Shan junction zone from seismology data

2015 ◽  
Vol 51 (6) ◽  
pp. 859-877 ◽  
Author(s):  
A. A. Lukk ◽  
V. I. Shevchenko ◽  
V. G. Leonova
Keyword(s):  
Tien Shan ◽  
Junction Zone
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