Empirical near-source attenuation relationships for peak ground acceleration, peak ground velocity, and pseudo-absolute acceleration response spectra

Hao-Kai Chan

Abstract

A consistent set of empirical attenuation relationships is presented for predicting free-field horizontal and vertical components of peak ground acceleration, peak ground velocity, and 5%damped pseudo-absolute acceleration response spectra. It presents an updated version of the soil site and rock site attenuation relationships that includes analysis of strong motion data.

The attenuation relationships presented in this study represent a compendium and synthesis of near-source attenuation relationships previously developed by the Campbell from 1990 trough 1994.The earthquake were included only if they had seismogenic rupture within the shallow crust (depths less than about 25 km), earthquake of moment magnitude (Mw) ≧5 and sites with distances to seismogenic rupture (RSEIS) ≦60km in active tectonic. Recordings on shallow soil and soft soil were excluded form the database based on previous analyses that showed that these sites have accelerations higher than those on deeper, firmer soil.

 

Reference

Campbell, K. W., 1997. Empirical near-source attenuation relationships for horizontal and vertical components of peak ground acceleration, peak ground velocity, and pseudo-absolute acceleration response spectra, Seism. Res. Lett., 68, 1, 154-179.

(Abstract) (Full text)

Sadigh, K., C. Y. Chang, J. A. Egan, F. Makdisi, and R. R. Youngs, 1997. Attenuation relationships for shallow crustal earthquake based on California strong motion data, Seism. Res. Lett., 68, 1, 180-189.

(Abstract) (Full text)