Abstract
Macroseismic intensity data plays an important role in the process of seismic hazard analysis as well in developing of reliable earthquake loss models. This paper presents a physical-based model to predict macroseismic intensity attenuation based on 560 intensity data obtained in Iran in the time period 1975–2013. The geometric spreading and energy absorption of seismic waves have been considered in the proposed model. The proposed easy to implement relation describes the intensity simply as a function of moment magnitude, source to site distance and focal depth. The prediction capability of the proposed model is assessed by means of residuals analysis. Prediction results have been compared with those of other intensity prediction models for Italy, Turkey, Iran and central Asia. The results indicate the higher attenuation rate for the study area in distances less than 70km.
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The author gratefully acknowledges the contributions by Prof. Mehdi Zare for sharing some parts of macroseismic intensity data complied for Iran.
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Yaghmaei-Sabegh, S. Macroseismic intensity attenuation in Iran. Earthq. Eng. Eng. Vib. 17, 139–148 (2018). https://doi.org/10.1007/s11803-018-0430-4
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DOI: https://doi.org/10.1007/s11803-018-0430-4