Geology, geography and global energy

Scientific and Technical Journal

Technique georadiolocation seismic microzonation in the oil and gas bearing regions 91of Lower Volga region and northern Caspian

2015. №1, pp. 83-92

Sheremetov Ivan M. - C.Sc. in Technical Assiociate Professor, Astrakhan Institute of Civil Engineering, 18b Tatishchev st., Astrakhan, 414056, Russian Federation, shrmtv@mail.ru

Kurdyuk Andrey Yu. - C.Sc. in Technical Assiociate Professor Head of the Department, Astrakhan Institute of Civil Engineering, 18b Tatishchev st., Astrakhan, 414056, Russian Federation, ayuk58@mail.ru

Serebryakov Oleg I. - D. Sc. in Geology and Mineralogy Professor, Astrakhan Institute of Civil Engineering, 18b Tatishchev st., Astrakhan, 414056, Russian Federation, geotehnika@aucu.ru

Serebryakova Valentina I. - Senior Lecturer, Astrakhan Institute of Civil Engineering, 18b Tatishchev st., Astrakhan, 414056, Russian Federation, geotehnika@aucu.ru

The attention of scientists and specialists attract new risk factors in areas of intense urbanization - abnormal and catastrophic natural and anthropogenic geodynamic phenomena with negative socio-economic and environmental impacts. In the lithosphere, is reflected on the surface of the Earth, constantly occurring geodynamic processes of various shapes and sizes. Traditionally it is believed that such processes occur mainly in mobile (orogenic) regions. Induced earthquakes are the most dangerous due to technological processes that are the source of geodynamic risk. Such conditions were formed on the territory of the Lower Volga and Northern Caspian, where the base of soils often stacked the third category on the seismic properties. Primers third categories, as surface deposits, increase the intensity of the incoming effects that are currently not taken into account in the design of buildings and structures in the region. Motley picture lithology and weaknesses of saturated soil grounds are capable of altering the intensity and spectral composition of the seismic action. The current approach to seismic hazard assessment is based on the assumption that the influence of the soil, in the territories over the area many times the area reserved for development. Modern instrumental methods of seismic zoning are considering a change of seismicity on large areas. However, the survey consequences of destructive earthquakes, as well as the work of some researchers strongly suggest the influence of soil small area on the intensity and spectral composition of seismic vibrations. The possibility of using GPR method for problems of seismic zoning.

Key words: сейсмичность, основания, сейсмическое микрорайонирование, георадиолокация, seismicity, base, seismic microzoning, GPR

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