Earthquake hazard and risk assessment based on unified scaling law for earthquakes: Altai–Sayan Region

Vladimir G. Kossobokov () and Anastasia K. Nekrasova
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Vladimir G. Kossobokov: RAS
Anastasia K. Nekrasova: RAS

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2018, vol. 93, issue 3, No 16, 1435-1449

Abstract: Abstract We apply the general concept of seismic risk analysis based on morphostructural analysis of the territory, pattern recognition of earthquake-prone nodes, and the Unified Scaling Law for Earthquakes, USLE, in another seismic region of Russia to the west from Lake Baikal, i.e., Altai–Sayan Region. The USLE generalizes the empirical Gutenberg–Richter relationship making use of apparently fractal distribution of earthquake sources of different size: $$ \log_{10} N\left( {M,L} \right)\, = \,A\, + \,B \cdot \left( {5\, - \,M} \right)\, + \,C \cdot \log_{10} L, $$ log 10 N M , L = A + B · 5 - M + C · log 10 L , where N (M, L) is the expected annual number of earthquakes of a certain magnitude M within an seismically prone area of linear dimension L. The local estimates of A, B, and C allow determination of the expected maximum credible magnitude in a given time interval and the associated spread around ground shaking parameters (e.g., peak ground acceleration, PGA, or macroseismic intensity, I0). Compilation of the corresponding seismic hazard map of Altai–Sayan Region and its rigorous testing against the available seismic evidences in the past is used to model regional maps of specific earthquake risks for population, cities, and infrastructures.

Keywords: Unified scaling law for earthquakes; Earthquake hazard; Seismic risk; Morphostructural zoning; Earthquake-prone node; Maximum credible earthquake (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s11069-018-3359-z

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