What question did this study set out to answer?

To formulate a probabilistic seismic hazard analysis framework that quantifies time-dependent ground-motion hazards caused by aftershocks following a major earthquake.

August 14, 2008Earthquake Engineering & Structural Dynamics

A probabilistic framework for quantification of aftershock ground‐motion hazard in California: Methodology and parametric study

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Authors

GYGee Liek YeoStanford University CCC. Allin CornellLawrence Livermore National Laboratory

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Implication

Modeling study demonstrates time-dependent aftershock hazard quantification following mainshocks, suggesting improved decision-making for post-earthquake building safety and rescue operations.

Key Points

To formulate a probabilistic seismic hazard analysis framework that quantifies time-dependent ground-motion hazards caused by aftershocks following a major earthquake.
Formulated an aftershock probabilistic seismic hazard analysis (APSHA) framework modeling time-decaying occurrence rates rather than stationary Poisson assumptions.
Integrated spatial constraints and ground-motion intensity measures (peak ground acceleration and spectral acceleration) conditioned on the causative mainshock's magnitude and location.
Demonstrated that aftershock ground-motion hazard rates decrease predictably as elapsed time from the causative mainshock increases.
Established a quantitative basis to support critical post-earthquake safety decisions, such as building tagging, structural repair evaluation, and occupancy re-entry.

Cite This Study

Yeo et al. (2008) studied this question.

synapsesocial.com/papers/69daafa3e6ab964fb083675c https://doi.org/10.1002/eqe.840

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Implication

Modeling study demonstrates time-dependent aftershock hazard quantification following mainshocks, suggesting improved decision-making for post-earthquake building safety and rescue operations.

A probabilistic framework for quantification of aftershock ground‐motion hazard in California: Methodology and parametric study

Discussion

Member takes

Implication

Key Points

Cite This Study

A probabilistic framework for quantification of aftershock ground‐motion hazard in California: Methodology and parametric study

Discussion

Member takes

Implication

Key Points

Cite This Study

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