earthquakes

Earthquakes on the south-west of Koryak highlands are connected with a block-key tectonics of lithosphere of marine transital of north-eastern margin of Eurasia and the block-key structure of its strata. The cloud of shocks of three strong earthquakes: Koryak`s (13.10.1988), Khailin`s (8.03.1991) and Olutor`s (20.04.2006) is located over the downfold of lithosphere bottom with drop of depths equal to 15-20 km. Preparation for the seismic events evolution to the north-eastward is possible.

The estimation of sensitivity of Archangelsk seismic network seismic station on the base of registered during four years world earthquakes is given. The spatial distribution of sensitivity at registrations of earthquakes in different range distances and azimuth are revealed, information about technical parameters of registrations for seismic stations are precise.
 

This paper discusses the needs to start a review process about the historical seismicity in Venezuela, from a different perspective to that used for compilation of already existent catalogues, with an interpretation intended to be more precise than exhibited by isoseismic curves assigned to most important earthquakes.
 

To study the 11-year Sun dynamics as an external process that influences the dynamics of the tectonic plates of the planet Earth held a lot of studies based on such a large time duration of this period. But as is known, the frequency of the destruction of tectonic plates may have other timing parameters that may be shorter or longer than 11 or 22. This paper presents a correlation analysis of short-period permissible minimum time interval of the earthquake processes and dynamics of the solar plasma.

Purpose. The purpose of the research is to study the features of the tectonic stress field before and after the 2011 Japan earthquake. Methodology. The reconstruction of the tectonic stress field is carried out on the basis of cataclastic analysis method of earthquake focal mechanism. The method allows us to define the tectonic stress tensor parameters and increments of quasi-plastic deformation. Results.

Purpose. The aim of investigations are comparative analysis of magnetic-variation parameters series from permanent geophysical station N.Selysche (Carpathians backdeep, Ukraine) and magnetic observatory Hurbanovo (West Carpathians, Slovak), definition of anomalous effects with regional features and studies of their relations with seismicity. Methodology. For comparative analysis were applied results of geomagnetic field variations records during 2011 from permanent geophysical station N.Selysche (Ukraine) and magnetic observatory Hurbanovo (Slovak).

Purpose. The aim of the research is the analysis of the results of complex geophysical observations in the area Oach fault, the study of the influence of meteorological parameters on seismodynamic condition, geodynamic connection parameters with parameter variations of geophysical fields, calculations of the parameters of the dynamic nature in deformation processes in the region, which can be used as characteristics of the geophysical processes of the earth's surface in the zone of possible local earthquakes. Methodology.

The paper brings into discussion geophysical evidence for jointly explaining the unusual craton seismicity in front of the SE Carpathians and the upper mantle intermediate-depth earthquakes in the Vrancea zone within the frame of the geodynamic environment generated by the W Black Sea opening and further evolution of the lithosphere expelled towards NW by rifting.

Purpose. The purpose of researches - to track traces of a zone of Teysseyre - Tornkvista (zone TT) in the territory of the western oil-and-gas region of Ukraine. Reasonable trace of the zone of Teysseyre-Tornkvista has important scientific and practical value. However still there are no unambiguous treatments of its situation in the territory of the West of Ukraine. The majority of researchers continue it from the territory of Poland rejecting to the southwest a little, and hiding under the Carpathians later. Width of this zone isn't established.

The aim. The aims of this study were: to calculate the parameters of horizontal deformation of Earth’s crust of Europe on the basis of annual velocity vectors of the horizontal displacement of permanent GNSS - stations, calculated according to the GNSS - observations during 2000 – 2010; to study the distribution and changes of horizontal deformations and earth's crust in Europe changes from 2000 to 2010 and to establish their relationship with the tectonic structure and the manifestation of seismic activity in the actual region. Methods.