Publikationsdatum:
2014-10-09
Beschreibung:
Presented herein is an updated model for empirical prediction of 5 %-damped elastic response spectra in the period range 0–10 s, peak ground acceleration and velocity, based on a global dataset of digital acceleration records. The predictive model features saturation of the shaking parameters with both magnitude \(M_{W}\) and distance \(R_{ RUP }\) , magnitude-dependent distance attenuation, alternative parameterisations of the amplification effects due to local site conditions (based either on ground types or \(V_{S,30}\) ) and corrective terms for style-of-faulting. The calibration dataset comprises more than \(1{,}880\times 2\) orthogonal horizontal accelerometer records with \(R_{ RUP }〈 150\) km from 98 global earthquakes with \(4.5\le M_{W}\le 7.9\) . The processing technique applied to the acceleration data optimises the reliability of the predictions at long periods, as required by displacement-based design techniques. Developed independently of the recent NGA-West2 and RESORCE -based models, the new predictive tool effectively contributes to capturing the epistemic uncertainties associated with the prediction of seismic shaking levels for engineering applications.
Print ISSN:
1570-761X
Digitale ISSN:
1573-1456
Thema:
Geologie und Paläontologie
