Andrei Ivanovich Miroshnichenko

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• PhD
• Senior Researcher at Institute of the Earth’s Crust, Russian Academy of Sciences

Based on the results of physical modeling of the processes of fault zone formation, general regularities of their structural and dynamic development were revealed. These regularities were used as the basis of the author’s tectonophysical model of the tectonic earthquake focus, with a precursor resulting from it. Such a precursor is the self-organiz...

Consideration is being given to the tectonophysical approach to the reconstruction of structure formation mechanisms and stress-strain state of rocks in hydrocarbon deposits localized in the platform cover, which has a complex structure in terms of rheological layering and disturbance by different-rank fractures. With the Kovykta gas condensate fie...

The instrumental monitoring reveals an autowave nature of ice deformation behavior prior to ice shocks. A few minutes or the first tens of minutes before the shock, this process shows an increase in the amplitude of oscillations, often with a multi-fold reduction in their period. An autowave dynamics of ice deformations is due to self-organization...

The origins and formation mechanisms of neotectonic structures in a part of the Mongolian-Siberian region were identified by geodynamic zoning based on multidimensional statistical analysis of numerical arrays describing geological-geophysical and geological-geomorphological processes. These processes in the regional lithosphere were described by a...

The Southern Baikal is located within the actively developing Baikal rift zone (BRZ) that is characterized by a significant seismic potential, and M>7 earthquakes occur periodically with intensive shaking in the epicenters (up to 10 units). The problem of prediction and forecasting of strong earthquakes has always been critical for this region, con...

The research provides an example of the GPS time series processing for monitoring of horizontal coseismic displacements during the 11 January 2021 M 6.7 Hovsgol earthquake, Mongolia. There has been developed a methodological approach to the study of coseismic displacements at the time of the earthquake. This paper presents the results of determinin...

The study was aimed to identify the features of the formation and regularities of manifestation of faults in the platform environment applying the tectonophysical approach to the study of the structure of the Tambey hydrocarbon deposit (northern Yamal), largest in the West Siberia. Such research is important in the oil and gas industry at the prese...

The measurement data obtained at the GPS network in the southwestern part of the Baikal Rift System for the period from 1994 to 2020 were analyzed. The spatial relationship between seismic events and tectonic strain rates was estimated. The field of modern horizontal motions and deformations was calculated for the Tunka, South Baikal, and Khubsugul...

Magnitude of completeness, b-value, and correlation dimension of spatial epicenter distribution were estimated for the South Baikal basin using earthquake catalogue for the period of digital observations. All estimated parameters were mapped with a one-for-all approach that allowed revealing their spatial variability. The value of the completeness...

The article presents the results of the tectonophysical approach to the analysis of stress fields and the structure of gas–condensate deposits with the complex platform cover. The discussed case is the Kovykta license area (LA) in Eastern Siberia, Russia. In the upper part of the cross section, the network of fault zones was identified from the rel...

The field of earthquake epicentres of Pribaikalie (Russia) is reconstructed from the data of historical and instrumental monitoring of earthquakes. The analysis shows that seismic events in the study area are distributed irregularly in space and time. The seismic process in Pribaikalie is investigated through the prism of seismic structures in the...

First results of the analysis of GPS measurement data obtained from 18 sites of two local networks in the vicinity of Ulaanbaatar (Mongolia) for the period 2010–2015 have been presented. Horizontal velocity vectors are consistent with each other in the ITRF2014 system and with the velocities of the IGS permanent station ULAB. The sites move in the...

We have studied the structural geology and geomorphology of the fault zones in the junction area of the Angara-Lena uplift and the Predbaikalsky trough. We have analyzed faults and folds and reconstructed paleostresses for this junction area named the Irkutsk amphitheatre. Our study shows that syn-fold (Middle Paleozoic) faults include thrusts, rev...

Based on the results of a laboratory simulation of the seismic fault reactivation by “stick-slip” process, it was shown that the system of two blocks just before an impulse offset goes through the meta-instable dynamic state, with early and late stages of meta-instability [Ma et al., 2012]. In the first stage the offset begins in slow stationary mo...

Active faults of the Hangay-Hentiy tectonic saddle region in Central Mongolia are studied by space images interpretation, relief analysis, structural methods and tectonic stress reconstruction. The study results show that faults activation during the Late Cenozoic stage was selective, and a cluster pattern of active faults is typical for the study...

The contemporary horizontal movements and deformations in the central and southern parts of the Baikal depression are analyzed, and their relationship with contemporary seismicity is studied. Based on the long-term measurements by the Baikal geodynamical GPS monitoring network, the refined estimate is obtained for the velocity of the divergence of...

Based on multiyear measurements of present-day motions in the central area of the Baikal rift system, new data on the kinematics of horizontal motions, relative horizontal deformation rates, and rotation velocities in the area of junction of the South Baikal, North Baikal, and Barguzin rift basins have been obtained. This area is an intricate struc...

GPS and paleoseismological studies of Holocene and recent slip rates in the zone of the Main Sayan Fault show that the fault is currently locked, and the accumulated stress may release in a large earthquake. The southeastern flank of the fault generated at least five large earthquakes for the past 10 kyr. For the time elapsed since the ultimate eve...

This work addresses to relation of transpression and extension stress-strain conditions in intracontinental rift system. In our investigation we use a new structural, shallow geophysics, GPS geodetic data and paleostress reconstructions. The surroundings of southern tip of Siberian platform is the region of three Late Cenozoic structures conjugatio...

The central part of the Baikal rift system is commonly explained as a zone of continental extension separating of Siberian block attributed to North Eurasian plate and Transbaikal block attributed to Amur plate. The major and secondary NNE and NE active faults were recognized as normal faults with insignificant strike-slip component. We propose the...

Comprehensive analysis of the parameters characterizing contemporary and neotectonic deformations of the Earth’s crust and upper mantle developed in the Mongolia-Siberia area is presented. The orientation of the axes of horizontal deformation in the geodetic network from the data of GPS geodesy is accepted as an indicator of current deformations at...

Today, one of the most topical questions in the recent geodynamics of eastern Asia is that concerning the existence of the Amurian Plate and its boundaries. An unambiguous answer is difficult to obtain because seismicity is relatively rare and weak and the plate boundaries are often geomorphologically unclear. One of the methods that can help is sa...

The complex analysis of parameters characterizing the modern deformations of the Earth’s crust and upper mantle in the territory of the Mongolia-Siberian Area is made. Directions of principal tension axes of stress-tensors, calculated with the use of earthquake source mechanisms have been taken as parameters of modern deformations at the level of t...

The vertical zonation and fluid permeability of faults is treated as a function of depth and stage of development. The effect of patterns of structural development, strain history, and spatial-temporal fluctuations in stress-strain state upon fluid permeability and distribution of ore shows in fault zones are analyzed. It is shown that spatially an...

Current deformation in Pribaikalia, Western and Central Mongolia, and Tuva has been studied from measured horizontal GPS velocities and respective computed strain and rotation rates using 1994–2007 data of the Baikal–Mongolian GPS triangulation network. The GPS velocity field shows two main trends: an NE trend within Jonggaria, the Mongolian Altay,...

We analyzed the degree of vertical coherention of the deformations on different levels of the earth crust and upper mantle in Mongolia-Siberia mobile area and surroundings using several strain indicators: - direction of the elongation axes of GPS derived horizontal strain field (Lukhnev et al., in press); - direction of SHmin of the present-day str...

Apatite fission track analysis (AFTA) data are used to bring new light on the long-term and recent history of the Baikal rift region (Siberia). We describe the evolution of the topography along a NW-SE profile from the Siberian platform to the Barguzin range across the Baikal-southern Patom range and the northern termination of Lake Baikal. Our res...

The relationship between the Late Cenozoic tec- tonic deformations at the Siberian Platform (SP) mar- gin and the adjacent Baikal Rift System is considered. This study was aimed at estimation of the stress state and conditions of neotectonic reactivation of faults in the sedimentary cover of the eastern Irkutsk Amphithe- ater (the Angara-Lena Uplif...

The Amur-Zeya geodynamic test ground was set up in 2000 to study recent intracontinental crustal deformations. The velocity field calculations for the period of 2000 to 2003 describe three movements scales. The general level is characterized by the vectors of IGS sites in the eastern part of Asia, the BLAG (Blagoveshchensk) site included. The south...

The Amur-Zeya geodynamic test ground was set up in 2000 to study recent intracontinental crustal deformations. The velocity field calculations for the period of 2000 to 2003 describe three movements scales. The general level is characterized by the vectors of IGS sites in the eastern part of Asia, the BLAG (Blagoveshchensk) site included. The south...

The deepest lake in the world, Lake Baikal, Russia, lies on the intracontinental Baikal Rift system (BRS) along with the nearby Lake Khubsugul in northern Eurasia. Many questions connected with the history of the development of BRS remain open, in particular the time and causes of the formation of the recent BRS morphology. Thus, the rate of the In...

Based on measurements carried out using the method of GPS-geodesy and the calculation of seismotectonic deformations in the source zones of the strongest earthquakes, we have obtained the first estimates of the velocity of horizontal deformations of the Earth's crust in western Mongolia. The velocities of the displacements of large blocks, which co...

The recent destruction zone defined in the BRS lithosphere is responsible for the irregular spatial distribution of regional stress and different activation degrees of faults. This can probably be related to different degrees of seismic activity on the western and eastern coasts of Lake Baikal. The available geomorphologic data undoubtedly indicate...

On the base of GPS-measurements and seismotectonic deformation calculations the estimates are obtained for the long-term component of Earth crust horizontal deformation velocity in the West Mongolia - 10-8 year-1. Tectonic structure evolution and seismicity of the region are controlled by contraction in the north-east direction generated in the dom...

Geometry and Late Cenozoic kinematics of regional and local active faults in the northern and western sides of the Hovsgol basin have been studied through remote sensing and geomorphological and structural field measurements. W-E faults show left-lateral strike slip and a reverse vertical motion, NW faults have a right-lateral and NE faults a left-...

1] We present new geodetic results of crustal velocities over a large part of northern Asia based on GPS measurements in the Baikal rift zone and Mongolia spanning the 1994– 2002 period. We combine our results with the GPS velocity field for China of Wang et al. [2001] and derive a consistent velocity field for most of Asia. We find contrasted kine...

Doklady Earth Sciences, v. 393, n. 8, p. 1082-1085 [613], 2003

Doklady Earth Sciences, v. 389, n. 2, p. 263-266, 2003

A high level of seismic activity and geological evidences of Quaternary slip rate on the faults follow active tectonic deformations of the Baikal rift. GPS measurements from 1994 to 2002 are used to estimate horizontal strain rates in the central and southwestern part of the Baikal region. We estimated shear strain rates of 0.4 - 0.5 murad yr-1 on...

The Baikal and Khubsugul basins of the Baikal rift system are the largest lake basins of Siberia. Despite of the wide-spread opinion of close relationship between these lake basins, their structural position and the mode of geodynamical development have some considerable differences. The major similarities are: location on the boundaries between th...

The data of primary observations for the period 1994-2002 are processed using the program package GAMIT. The data on a series of global stations are included in the calculations for connection with coordinate system ITRF2000. The stations' positions and their formal errors are determined using the program GLOBK. As a result, full displacement vecto...

The Khubsugul rift basin in North Mongolia is a submeridional part of the southwestern flank of the Baikal rift system. Its location, as that of the conjugate sublatitudinal Tunka segment of the rift system, is controlled by the margin of the Riphean block. Neotectonic faults of the N-S and NE strike are of the first importance in the basin boards...

The present-day faulting is one of the main aspects of the present-day geodynamics. It can be studied only using the information on deformation of dated Holocene sedimentary complexes, seismogenic structures of the same age, seismicity, hydrothermalism (manifestation of the present-day hydrothermal processes), and volcanism. Spatial-temporal regula...

In the framework of the Russian-French project, a series of geodesic stations for studying present-day crust deformations by the GPS method was organized on the Baikal geodynamic test ground. Processing of data of 3-year-long observations permitted obtaining a field of vectors of the rates of present-day horizontal movements in the southern and cen...

Three years and four campaigns of Global Positioning System (GPS) measurements (1994-1997) in the Baikal rift zone, largest active continental rift system in Eurasia, show crustal extension at a rate of 4.5+1.2 mm/yr in a WNW-ESE direction. A comparison with moment release of large historical earthquakes suggests that elastic strain is currently ac...

BCREDP, l.'etude detaillee des structures cenozoiques dans la zone de rift du Bafkal montre la presence conjointe de structures extensives (failles normales) et compressives (failles decrochanrcs, chevauchantes et plissements), L'analyse microstructurale des structures cassantes et I'inversion des donnees de faille avec stries pour en deduire les t...

The Baikal depression occupies a central position in the system of the basins of the Baikal Rift Zone and corresponds to the nucleus from which the continental lithosphere began to open. For different reasons, the internal structure of the Lake Baikal basin remained unknown for a long time. In this article, we present for the first time a synthesis...

Detailed investigation of Cenozoic structures in the Baikal rift zone (BRZ) revealed the existence of both extensional structures (normal faults) and compressional structures (strike-slip faults, thrusts and folding). Microstructural analysis of brittle structures and stress inversion of fault-slip data permitted the reconstruction of the Cenozoic...

Investigations on the kinematics of rift opening and the associated stress field present a renewed interest since it has recently been shown that the control of the origin and evolution of sedimentary basins depends to a large extent on the interplay between lithospheric strength and applied stresses. It appears that changes of stress field with ti...

DELVAUX, D. (1997). -Active Faults of the Baikal Depression. [Failles actives de la depression du Baika~. -Bull. Centre Rech. Elf ExplorProd., 21,2,399-434, 10 fig., 13 pl.: Pau, December 29, 1997. -ISSN. 1279-8215. CODEN. BCREDP. La depression du Barkal occupe une position centrale dans Ie systeme des bassins de la zone du rift du Baikal. Elle cor...

Structural-geological and seismoacoustlc studies carried out in 1989-94 within the Baikal Rill Zone, for the first time show the internal active tectonic structure of the present Baikal Rill lake basin. A series of smaller structure features are distinguished not only by morphology but also by degree of recent activity. Based on the recent structur...