NGA-Subduction research program
- Authors
- Bozorgnia, Yousef; Abrahamson, Norman A.; Ahdi, Sean K.; Ancheta, Timothy D.; Al Atik, Linda; Archuleta, Ralph J.; Atkinson, Gail M.; Boore, David M.; Campbell, Kenneth W.; Chiou, Brian S-J; Contreras, Victor; Darragh, Robert B.; Derakhshan, Sahar; Donahue, Jennifer L.; Gregor, Nick; Gulerce, Zeynep; Idriss, I. M.; Ji, Chen; Kishida, Tadahiro; Kottke, Albert R.; Kuehn, Nicolas; Kwak, DongYoup; Kwok, Annie O-L; Lin, P.; Macedo, Jorge; Mazzoni, Silvia; Midorikawa, Saburoh; Muin, Sifat; Parker, Grace A.; Rezaeian, Sanaz; Si, Hongjun; Silva, Walter J.; Stewart, Jonathan P.; Walling, Melanie; Wooddell, Katie; Youngs, Robert R.
- Issue Date
- May-2022
- Publisher
- Earthquake Engineering Research Institute
- Keywords
- Ground motion models; subduction earthquakes; NGA; Next Generation Attenuation for Subduction; attenuation; seismic hazard
- Citation
- Earthquake Spectra, v.38, no.2, pp 783 - 798
- Pages
- 16
- Indexed
- SCIE
SCOPUS
- Journal Title
- Earthquake Spectra
- Volume
- 38
- Number
- 2
- Start Page
- 783
- End Page
- 798
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/107876
- DOI
- 10.1177/87552930211056081
- ISSN
- 8755-2930
1944-8201
- Abstract
- This article summarizes the Next Generation Attenuation (NGA) Subduction (NGA-Sub) project, a major research program to develop a database and ground motion models (GMMs) for subduction regions. A comprehensive database of subduction earthquakes recorded worldwide was developed. The database includes a total of 214,020 individual records from 1,880 subduction events, which is by far the largest database of all the NGA programs. As part of the NGA-Sub program, four GMMs were developed. Three of them are global subduction GMMs with adjustment factors for up to seven worldwide regions: Alaska, Cascadia, Central America and Mexico, Japan, New Zealand, South America, and Taiwan. The fourth GMM is a new Japan-specific model. The GMMs provide median predictions, and the associated aleatory variability, of RotD50 horizontal components of peak ground acceleration, peak ground velocity, and 5%-damped pseudo-spectral acceleration (PSA) at oscillator periods ranging from 0.01 to 10 s. Three GMMs also quantified "within-model" epistemic uncertainty of the median prediction, which is important in regions with sparse ground motion data, such as Cascadia. In addition, a damping scaling model was developed to scale the predicted 5%-damped PSA of horizontal components to other damping ratios ranging from 0.5% to 30%. The NGA-Sub flatfile, which was used for the development of the NGA-Sub GMMs, and the NGA-Sub GMMs coded on various software platforms, have been posted for public use.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING > 1. Journal Articles
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