Analysis of stress-strain state of Caucasus region (Azerbaijan) on the basis of maximum horizontal stress vectors and "World Stress Map" application technique
Journal Title: Геофизический журнал - Year 2017, Vol 39, Issue 3
Abstract
The influence of topographic anomaly of the relief on the stress-strain state of the Caucasus lithosphere (Azerbaijan) and plotting the respective models have been considered in the paper. Stress-strain state was studied by the finite element method with the application of software packages Hypermesh™ and AbaqusTM. Based on the plotted models of stress-strain state of lithosphere, the orientations and localization of the horizontal stress axes at the various lithosphere depths were determined. The correlation of those stress axes was done with the stress map plotted on the basis of focal mechanism solutions of the earthquake occurred in Azerbaijan within the period of 1990—2015 years with the application of CASMO ("World Stress Map") technique. Mainly western and central parts of Greater Caucasus ridge are characterized by northeastern—southwestern tension. In the eastern part, the tension reverses into intensive compression. In the studied region, earthquakes are predominantly thrust-faulting with a number of normal-faulting and some strike-slip faulting. The consideration of the topographic anomalies at analysis of stress-strain state at the various lithosphere depth levels will allow obtaining more reliable data for the plotting of geodynamic model of the region. Such researches are necessary to be conducted at the construction of the strategic facilities, especially underground constructions (mines, tunnels, underground pipelines, terminals) since it is important to consider as many factors as possible affecting the formation of the stress-strain state of the Earth's crust.
Authors and Affiliations
G. P. Babayev, E. V. Akhmedova, F. A. Kadirov
Keywords
Related Articles
- EP ID EP198162
- DOI 10.24028/gzh.0203-3100.v39i3.2017.104026
- Views 99
- Downloads 0
Studies of the Poltava seismic-tidal records during the period of explosions events in Balakliya and Kalynivka
The seismic-tidal records obtained at the Poltava gravimetric observatory of the IGF NAS of Ukraine (PGO) studied before, during and after events in Balaklija (March 22—23) and in Kalinovka (September 26—27) 2017 (explos...
Secular variations of the geomagnetic field at the African plate
Geomagnetic secular variations at the African plate consist of shortperiod and longperiod components. Shortperiod SV depends on solar activity. To separate longperiod SV for the Athens magnetic observatories with confide...
The new method for edges detection of magnetic sources using logistic function
The tilt angle of the analytic signal amplitude (TA) is defined as the arctangent of the ratio of the first vertical derivative to the total horizontal derivative of the analytic signal amplitude. It is commonly used as...
Jupyter Notebook: a system for interactive scientific computing
Jupyter Notebook ― is a web-appendix which allows writing and supplying comments a code to Python in interactive regime. It is an exclusive method to make experiments and studies and intercommunicate with others. Many re...
Innovative geoelectric methods: multi-year experience of application for the practical problems of near-surface geophysics operative solution
The results of practical application of mobile geophysical methods for the operational detection and mapping of underground water streams and aquifers at several construction sites in Kiev are presented and analyzed. Geo...