UP-TO-DATE DETAILED SEISMIC ZONING OF REGIONS IN KAZAKHSTAN (PGA CASE)
Silacheva N.
2023Gnedenko Forum
Reliability: Theory and Applications
2023#18Issue Special Issue 5275 - 282 pp.
The results of the first project in Kazakhstan on the Detailed Seismic Zoning of regions on a new methodological basis are presented. The Probabilistic Seismic Hazard Assessment is carried out for the territories of East Kazakhstan (since 2022 EKO and Abay), Almaty (since 2022 Almaty and Zhetysu) and Zhambyl regions using a methodology consistent with the main provisions of Eurocode 8 and updated compared to that used in maps of the recent General Seismic Zoning of Kazakhstan territory. Modern methods and tools of analysis were used, as well as the most complete and up-to-date information available for the territories under consideration. The seismic source model included areal sources and active faults. The developed maps are discussed and hazard curves and uniform hazard spectra for the main cities in the considered regions are presented. The obtained results are generally consistent with the General Seismic Zoning but display some differences in PGA distribution due to including active faults and a comprehensively revised catalogue. Zoning maps will be the basis for the development of new state building regulations of the Republic of Kazakhstan.
peak ground acceleration , probabilistic seismic hazard assessment , seismic zoning
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Institute of Seismology, Ministry of Emergency Situations of the Republic of Kazakhstan, Kazakhstan
Institute of Seismology
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