Empirical Near-Source Attenuation Relationships for Horizontal and Vertical Components of Peak Ground Acceleration, Peak Ground Velocity, and Pseudo-Absolute Acceleration Response Spectra

Abstract

Based on extensive user feedback, it has been determined that there are several errors and ambiguities that need to be corrected in the original manuscript (Campbell, 1997). Some of the errors are the result of typographical errors by the publisher, while others are omissions to the original equations that occurred as an oversight. I also offer some additional guidance on the use of the attenuation relations for calculating ground motion parameters for normal-faulting earthquakes and for sites classified simply as “soil” or “rock.” I hope that these corrections and additional guidance will make the attenuation relations more understandable and easier to use. Equation (1) should be corrected as follows: when dSEIS ≥ HSEIS \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \[d\_{SEIS}=\frac{1}{2}[H\_{TOP}+H_{BOT}-W\mathrm{sin}({\alpha})]\] \end{document} otherwise \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \[ d\_{SEIS}=H\_{SEIS}\] \end{document}(1) where HTOP (km) is the depth to the top of the fault and HSEIS (km) is the depth to the top of the seismogenic part of the crust. The original equation mistakenly assumed that the depth to the top of the fault was equal to the depth to the seismogenic crust. Equation (2) should be corrected as follows: \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \[ \mathrm{log}{ }W=-1.01+0.32M_{W}\] \end{document}(2) The original equation mistakenly omitted the log term. Based on the revision to Equation (1), Table 1 and the related discussion should be corrected as follows: View this table: TABLE 1 Recommended Average Values of dSEIS …