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Erratum for Spudich et al., BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 89 (5) 1156-1170.
Bulletin of the Seismological Society of America; June 2005; v. 95; no. 3; p. 1209; DOI: 10.1785/0120050026
© 2005 Seismological Society of America
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Erratum

A Revised Ground-Motion Prediction Relation for Use in Extensional Tectonic Regimes

P. Spudich1 and D. M. Boore1

1 U.S. Geological Survey
345 Middlefield Road, MS 977
Menlo Park, California 94025

The equation used to compute the values of {sigma}3 in Table 2 in Spudich et al. (1999) was in error by a factor of 2. The result is that all values of {sigma}3 are too large by a factor of {surd}2. When added to the variance for the prediction of the geometric mean of ground motion, {sigma}32 is the correction needed to give the variance corresponding to the randomly oriented component of ground motion.

The error, which originally appeared in equation (3) in Boore et al. (1993), also propagated to Boore et al. (1997) and Spudich et al. (1997). An erratum to Boore et al. (1997) submitted for publication in Seismological Research Letters contains more detail about the error and its consequences.

Manuscript received February 10, 2005


   References
Top
 References
 

Boore, D. M., W. B. Joyner, and T. E. Fumal (1993). Estimation of response spectra and peak accelerations from western North American earthquakes: an interim report, U.S. Geol. Surv. Open-File Rept. 93-509, 72 pp.

Boore, D. M., W. B. Joyner, and T. E. Fumal (1997). Equations for estimating horizontal response spectra and peak acceleration from western North American earthquakes: a summary of recent work, Seism. Res. Lett. 68,128 –153.

Spudich, P., J. B. Fletcher, M. Hellweg, J. Boatwright, C. Sullivan, W. B. Joyner, T. C. Hanks, D. M. Boore, A. McGarr, L. M. Baker, and A. G. Lindh (1997). SEA96—A new predictive relation for earthquake ground motions in extensional tectonic regimes, Seism. Res. Lett. 68,190 –198.

Spudich, P., W. B. Joyner, A. G. Lindh, D. M. Boore, B. M. Margaris, and J. B. Fletcher (1999). SEA99: a revised ground motion prediction relation for use in extensional tectonic regimes, Bull. Seism. Soc. Am.89 ,1156 –1170.[Abstract/Free Full Text]




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K. L. Pankow and J. C. Pechmann
The SEA99 Ground-Motion Predictive Relations for Extensional Tectonic Regimes: Revisions and a New Peak Ground Velocity Relation
Bulletin of the Seismological Society of America, February 1, 2006; 96(1): 364 - 364.
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