MODELS FOR THE DESCRIPTION OF PEAK ACCELERATION RELATIPONONTHE GROUNDSHAKINGMACROSEISMIC INTENSITY

Abstract

Models for estimating the probable peak accelerations usingstrong earthquakes ground macroseismic intensity have occurred or forecasted and vice versa, to estimate macroseismicintensityusing acceleration data based on statistical analysis of large amounts ofworldaccelerations data were offered. It is shown, that in a wide range of intensities (3-11 MSK) the description of intensity dependence on ground motionpeak accelerations amplitudes it is better fit piecewise-linear approximation with different regressioncoefficients. When using common now linear correlations can occur, in particular, the underestimation of the peak accelerations in the range of medium and low macroseismic intensities (3-7 MSK) and, on the contrary, revaluation probable accelerations at high intensities (9-11 MSK).