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Conditioning criteria based on multiple intensity measures for selecting hazard-consistent aftershock ground motion records
Abstract A mainshock earthquake is typically followed by a sequence of aftershocks, normally with a higher probability of occurrence within the first few days after the mainshock event. Quantifying the subsequent damage due to an aftershock event for a given structure that is already at some state of damage due to the mainshock event is an important task in seismic hazard and loss assessment. This task requires a framework to quantify the aftershock hazard in addition to the mainshock hazard that is already well defined. The present study aims to develop such a framework that facilitates the quantification of aftershock hazard given two sequential fault rupture scenarios—an approach that ultimately serves the basis for a hazard-consistent aftershock ground motion selection. To this end, conditioning criteria based on a single, two, and average-of-multiple intensity measures are utilized in order to select hazard-consistent aftershock records from databases comprising both mainshock and aftershock events. The primary outcome of this study is, thus, a stochastic framework that defines the aftershock seismicity of a given site and enables the aftershock ground motion selection for performance-based seismic assessment and design of structures.
Highlights Framework for aftershock probabilistic seismic hazard assessment. Framework for aftershock ground motion selection based on various methods of conditioning. Investigating the sensitivity of various contributing parameters to aftershock hazard.
Conditioning criteria based on multiple intensity measures for selecting hazard-consistent aftershock ground motion records
Abstract A mainshock earthquake is typically followed by a sequence of aftershocks, normally with a higher probability of occurrence within the first few days after the mainshock event. Quantifying the subsequent damage due to an aftershock event for a given structure that is already at some state of damage due to the mainshock event is an important task in seismic hazard and loss assessment. This task requires a framework to quantify the aftershock hazard in addition to the mainshock hazard that is already well defined. The present study aims to develop such a framework that facilitates the quantification of aftershock hazard given two sequential fault rupture scenarios—an approach that ultimately serves the basis for a hazard-consistent aftershock ground motion selection. To this end, conditioning criteria based on a single, two, and average-of-multiple intensity measures are utilized in order to select hazard-consistent aftershock records from databases comprising both mainshock and aftershock events. The primary outcome of this study is, thus, a stochastic framework that defines the aftershock seismicity of a given site and enables the aftershock ground motion selection for performance-based seismic assessment and design of structures.
Highlights Framework for aftershock probabilistic seismic hazard assessment. Framework for aftershock ground motion selection based on various methods of conditioning. Investigating the sensitivity of various contributing parameters to aftershock hazard.
Conditioning criteria based on multiple intensity measures for selecting hazard-consistent aftershock ground motion records
Ghotbi, Abdoul R. (author) / Taciroglu, Ertugrul (author)
2020-07-25
Article (Journal)
Electronic Resource
English
Generation of hazard-consistent ground motion
| Elsevier | 1994
Generation of hazard-consistent ground motion
| Online Contents | 1994