According to GPS monitoring, recent tectonic process between Tarim and West Siberia in the band within 80°–95° E is generated by the northward movement of the Tarim block. During the accompanying horizontal compression of the area, orogeny takes place within linear mobile zones when blocks are squeezed into the upper half-space. When the orientation of the mobile zones is transverse to the compression direction, the leading orogenic process is reverse faulting. When these directions intersect at an acute angle, the principal features of the mountain relief are formed by oblique-slip and strike-slip faults. The spatial distribution of seismic activity A10 over a 40-year period of instrumental observations within the mobile zones of the study area is extremely nonuniform. Seismic activity increases to the south, toward the source of deformations—the Indo-Eurasian collision. The maximum activity is observed at the reverse-fault boundaries of the eastern Tien Shan (~40). The seismic activity of the strike-slip fault boundaries of the Great Altai is considerably lower (0.11–0.16).

No abstract

Abstract. In this paper, we show one of recent GIS-ENDDB algorithms: the algorithm of building seismicity lineaments in terms of Great circles of the Earth. We also show using some other GIS-ENDDB algorithms to identify and to confirm the possibility of existence of global tectonic structures of the lineament type in different geodynamic regions. The formalized lineament construction based on fundamental physical laws allows us to reconstruct the long-term geological processes within a single mechanism of the structure formation. Examples of application of this GIS-ENDDB algorithm show the importance of developing the methods of the lineament construction to solve fundamental geodynamic problems.Keywords: catalog of the earthquakes, tectonogenic structure elements, geophysical anomalies, seismicity lineament.The geographic information system GIS-ENDDB [1] that was developed for geophysicists enables the researcher to operate to his choice with multiple components of geophysical processes. These processes are multi-dimensional and nonlinearly related; they are of different scales and dynamically developing. The researcher cannot take into account all the factors affecting the dynamics of real geophysical manifestations, so in the results interpretation he is always in terms of an ambiguous and undefined choice. Such a state of affairs is an unavoidable consequence of the dynamics of multi-dimensional nonlinear systems, which exhibit the capacity for self-organization and bifurcation. The more powerful is the GIS, the better the researcher's needs is realized to gradually, step by step, choose the most reliable of many possible variants.In this paper, an attempt is made to illuminate this kind of problems in one of recent GIS-ENDDB algorithms: the algorithm of building seismicity lineaments in terms of Great circles of the Earth. We also show using some other GIS-ENDDB algorithms to identify and to confirm the possibility of existence of global tectonic structures of the lineament type in different geodynamic regions. Among the latest updates into the GIS-ENDDB subsystems of information and mathematical software used in this study, there are algorithms of constructing contours of maximum earthquake magnitudes and functions of visualization of geophysical fields.

The creepex (creep & explosion) parameter provides information on the relation between low- and high-frequency radiation components in the earthquake source and has become a physically meaningful tool for analyzing various aspects of seismogenesis, in particular, the diagnostics of the preparation processes and the its aftershocks activity of a strong event. This paper investigates the spatial-temporal dynamics of creepex in the focal zones of a number of the major earthquakes from the plate convergence regions, including continental Kashmir earthquake (08.10.2005, MS=7.6) and continental-oceanic Tohoku (11.03.2011, Mw=8.7). One of the goals of this work is to demonstrate the capabilities of the method in studying physically grounded patterns of focal zones development at the first hours after the main shock. Because of this study, the following regularities of the source relaxation process were revealed: the partiality of the aftershock process, positive values of the creepex at its first hours (explained by the influence of the dilatancy process), and abrupt changes in the creepex during deep transitions (explained by the thermodynamic effect and by the increase in pressure with depth).