Type | Proceeding | ||||||||||
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Title | Extending and testing Graizer-Kalkan ground motion attenuation model based on Atlas database of shallow crustal events | ||||||||||
Authors | Graizer, V.; Kalkan, E.; Lin, K.-W. | ||||||||||
Book Title | Proceedings of the 9th U.S. National and 10th Canadian Conference on Earthquake Engineering: Reaching Beyond Borders | ||||||||||
Year | 2010 | ||||||||||
Number | 568 | ||||||||||
Abstract | A new ground motion prediction equation (GMPE) based on representation of attenuation function as a series of filters has been developed using expanded NGA database (Graizer and Kalkan 2007). In this GMPE, each filter represents a certain physical phenomenon on seismic radiation (e.g., distance attenuation, magnitude scaling, site-correction, basin effect, etc.). We use moment magnitude (denoted as M w or M) and closest distance to the fault (denoted as Rcl or R) in our model. The predictive power of this GMPE is examined using a comprehensive set of peak ground acceleration (PGA) data (~14,000) compiled from 245 worldwide shallow crustal events. Comparison of actual data with predictions demonstrates a very good match up to 100 km for a range of magnitudes 4.2 ≤ Mw ≤ 7.9. In order to model a faster attenuation of ground motion data beyond 100 km, two estimator coefficients are updated and a new filter is implemented. The resultant GMPE GK-09 produces good match to recorded global data in both near- and far-field up to 500 km. | ||||||||||
Files |
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Access | Public |
No | Name | Property | Value | Validity Conditions | |||
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1. | Graizer et al. (2010) | PGA | ƒ(FM, Mw, Vs30, dr) g | Mw: 4.5–7.9; FM: Strike-slip, Normal, Reverse; dr: < 500 km | - | - | - |
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