1. Overview and Introduction to Development of Non-Ergodic Earthquake Ground-Motion Models
- Author
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Lavrentiadis, Grigorios, Abrahamson, Norman A., Nicolas, Kuehn M., Bozorgnia, Yousef, Goulet, Christine A., Babič, Anže, Macedo, Jorge, Dolšek, Matjaž, Gregor, Nicholas, Kottke, Albert R., Lacour, Maxime, Liu, Chenying, Meng, Xiaofeng, Phung, Van-Bang, Sung, Chih-Hsuan, and Walling, Melanie
- Subjects
Statistics - Applications ,Physics - Geophysics ,62P30 - Abstract
This paper provides an overview and introduction to the development of non-ergodic ground-motion models, GMMs. It is intended for a reader who is familiar with the standard approach for developing ergodic GMMs. It starts with a brief summary of the development of ergodic GMMs and then describes different methods that are used in the development of non-ergodic GMMs with an emphasis on Gaussian Process (GP) regression, as that is currently the method preferred by most researchers contributing to this special issue. Non-ergodic modeling requires the definition of locations for the source and site characterizing the systematic source and site effects; the non-ergodic domain is divided into cells for describing the systematic path effects. Modeling the cell-specific anelastic attenuation as a GP and considerations on constraints for extrapolation of the non-ergodic GMMs are also discussed. An updated unifying notation for non-ergodic GMMs is also presented, which has been adopted by the authors of this issue., Comment: 28 pages, 2 figures
- Published
- 2021