GMSS2.0: An Enhanced Software Program for Stochastic Finite-Fault Ground-Motion Simulation

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3 Scopus citations


This article introduces an enhanced software program for stochastic ground-motion simulations using finite-fault sources, named Ground-Motion Simulation System version 2.0 (GMSS2.0). GMSS2.0 embodies an updated theoretical model of corner frequency and source duration, making the seismological model for defining the Fourier amplitude spectrum for each subfault more theoretically consistent. In addition, GMSS2.0 provides four rupture scaling relationships and five baseline correction techniques for end users to select the most suitable one for a specific application. For validation purposes, comprehensive comparisons between GMSS2.0 and EXtended SIMulation (EXSIM) for wide ranges of magnitude (M 4–8), distance (∼6–300 km) and spectral period (0.01–10 s) have been performed. The results show that GMSS2.0 can give remarkably close estimates to EXSIM with reasonable levels of accuracy. Finally, further validation is performed by comparing GMSS2.0 simulations with five Next Generation Attenuation-West2 ground-motion models for multiple scenario earthquakes with the updated site amplification for the generic California condition (VS30=500 m/s).
Original languageEnglish (US)
JournalSeismological Research Letters
StatePublished - Feb 16 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-04-27
Acknowledgements: The guidance and suggestions provided by David Boore for using Extended SIMulation (EXSIM_DMB) are greatly appreciated. Editor-in-Chief Allison Bent is acknowledged for processing this article during the whole review procedure. In addition, the suggested comments given by the two anonymous reviewers are appreciated for improving the quality of this article. This work is supported by the Postdoctoral Office of Guangzhou City, China (Grant Number 62104343)

ASJC Scopus subject areas

  • Geophysics


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