Adjustment of a Seismic Impact Model of an Extended Source According to Regional Macroseismic Data

Abstract

This article continues studies on advancing the methodology for seismic zoning of the Russian Federation. Computational technologies for probabilistic seismic hazard analysis (PSHA), which have been used extensively worldwide, were developed at the end of the 20th and have barely changed over the past 20 years. As a rule, recent studies have focused on refining the models included in the calculation: the source zone model and the seismic impact model. Global practice utilizes the PSHA technology both for the construction of general seismic zoning (GSZ) maps and at the stage of detailed investigations in engineering and seismological surveys for building particular objects. At the same time, in accordance with the scale of a survey, detailed elaboration of the source zone model is done and the seismic impact model based on regional data is adjusted. In 2010–2016, while updating GSZ-97 and developing the GSZ-2012/2014/2016 maps, S.A. Peretokin and E.V. Bodyakin, under the supervision of V.I. Ulomov, upgraded the related software. The new user interface was called EAST-2016. This article illustrates the use of GSZ-97 technology at the stage of refining initial seismicity assessments. A case study of the southern coast of the Crimean Peninsula has been used to adjust the seismic impact model of an extended source based on regional macroseismic data. The obtained parameters can be used to refine the initial seismicity of the specified territory.