Open AccessMacroseismic intensity attenuation equations for Central Asia earthquakes
Author(s) -
T.U. Artikov,
Р. С. Ибрагимов,
T.L. Ibragimova,
M.A. Mirzaev
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/929/1/012029
Subject(s) - attenuation , seismology , seismic hazard , intensity (physics) , geology , magnitude (astronomy) , ellipse , geodesy , geometry , mathematics , physics , quantum mechanics , astronomy , optics
Based on macroseismic survey data for strong earthquakes in Central Asia, the coefficients of attenuation of seismic intensities with distance in the Blake-Shebalin- and Kovesligethy -type equations were refined. A new generalized dependence of macroseismic intensity attenuation on distance, taking into account the depth of the earthquake hypocentre, were obtained. Relations between the minor and major axes of the ellipse approximating real isoseists depending on the shaking strength, source depth and earthquake magnitude were found. With the example of the territory of eastern Uzbekistan, the influence of the choice of the law of seismic intensity attenuation with distance on the obtained seismic hazard assessments is investigated.