Abstract
In this paper, we employed polynomial chaos (PC) expansions to understand earthquake rupture model responses to random fault plane properties. A sensitivity analysis based on our PC surrogate model suggests that the hypocenter location plays a dominant role in peak ground velocity (PGV) responses, while elliptical patch properties only show secondary impact. In addition, the PC surrogate model is utilized for Bayesian inference of the most likely underlying fault plane configuration in light of a set of PGV observations from a ground-motion prediction equation (GMPE). A restricted sampling approach is also developed to incorporate additional physical constraints on the fault plane configuration and to increase the sampling efficiency.
Original language | English (US) |
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Pages (from-to) | 3071-3088 |
Number of pages | 18 |
Journal | Geoscientific Model Development |
Volume | 11 |
Issue number | 7 |
DOIs | |
State | Published - Jul 31 2018 |
Bibliographical note
Publisher Copyright:© 2018 Copernicus GmbH. All rights reserved.
ASJC Scopus subject areas
- General Earth and Planetary Sciences
- Modeling and Simulation