Earthquake Spectra· 2014Q1
NGA‐West2 Ground Motion Model for the Average Horizontal Components of PGA, PGV, and 5% Damped Linear Acceleration Response Spectra
- 1,401citations
- Q1SCImago
- 2014year
Short summary
A new ground motion prediction equation (GMPE) has been developed using the expanded PEER NGA-West2 database, offering improved estimates for seismic hazard parameters like peak ground acceleration (PGA) and velocity (PGV).
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Key points
- Developed a new GMPE for PGA, PGV, and response spectra using the PEER NGA-West2 database.
- Includes enhanced hanging wall modeling, regional attenuation, and magnitude-dependent variability.
- Valid for shallow crustal continental earthquakes from 0-300 km distance and magnitudes 3.3 to 7.5-8.5.
- Addresses biases in older models, particularly for small-magnitude earthquakes.
AI-generated from the title and abstract; the full text is not read.
Abstract
We used an expanded PEER NGA‐West2 database to develop a new ground motion prediction equation (GMPE) for the average horizontal components of PGA, PGV, and 5% damped linear pseudo‐absolute acceleration response spectra at 21 periods ranging from 0.01 s to 10 s. In addition to those terms included in our now superseded 2008 GMPE, we include a more‐detailed hanging wall model, scaling with hypocentral depth and fault dip, regionally independent geometric attenuation, regionally dependent anelastic attenuation and site conditions, and magnitude‐dependent aleatory variability. The NGA‐West2 database provides better constraints on magnitude scaling and attenuation of small‐magnitude earthquakes, where our 2008 GMPE was known to be biased. We consider our new GMPE to be valid for estimating horizontal ground motion from shallow crustal continental earthquakes in an active tectonic domain for rupture distances ranging from 0 km to 300 km and magnitudes ranging from 3.3 to 7.5–8.5, depending on source mechanism.
The authors' abstract, as published at the source. Earthquake Spectra, 2014 · DOI ↗
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Field: Civil and Structural Engineering
Civil and Structural EngineeringEngineering