Correlation of Ground Motion Duration with Its Intensity Metrics: A Simulation Based Approach

Document Type: Invited Article


1 Department of Civil Engineering, University of Science and Culture, Rasht, Iran

2 Department of Civil Engineering, Sharif University of Technology, Tehran, Iran


There are different kinds of intensity measures to characterize the main properties of the earthquake records. This paper proposes a simulation-based approach to compute correlation coefficients of motion duration and intensity measures of the earthquake ground motions. This method is used to investigate the influence of the ground motion data set selection in resulting duration-intensity correlation coefficients. The simulation procedure is used to tackle the problem of inadequate available ground motions with specific parameters. Correlation coefficients are investigated in three different cases. In case one, simulated ground motions differ in terms of earthquake source parameters, site characteristics, and site-to-source distances. In case two, ground motions are simulated in a specific site from probable earthquake events. In case 3, ground motions are simulated from a specific event in different sites. The first case doesn’t show a significant correlation, while the second and the third case demonstrate significant positive and negative correlations, respectively.


Main Subjects

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