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Digital Object Identifier 10.32754/JMT.2019.2.07 43 1Abstract—When applying the stochastic method in time domain ground motions simulations, a shaping function is required for modeling the energy release during an earthquake. It was noticed that Vrancea (Romania) intermediate-depth source produces strong pulse-type accelerations that contain up to 50-70% of the energy in a first phase that lasts only few seconds (under 5 seconds). After that the motion enters in a second phase that releases the rest of the energy slowly (in 30-50 seconds). For modeling the described behavior, a multi-interval function for modeling the energy release during an earthquake was required. In this paper the problem of continuity and derivability of such windowfunction is analyzed and discussed.

journal of military technology

Continuity and Derivability Issues in Modeling the Energy Release Shaping Window in Stochastic Simulation of Ground Motions Generated by Vrancea Intermediate-Depth Seismic Source