TY  - JOUR
A1  - Rodriguez-Marek, A.
A1  - Rathje, E. M.
A1  - Bommer, Julian J.
A1  - Scherbaum, Frank
A1  - Stafford, P. J.
T1  - Application of single-station sigma and site-response characterization in a probabilistic Seismic-Hazard analysis for new uclear site
JF  - Bulletin of the Seismological Society of America
N2  - Aleatory variability in ground-motion prediction, represented by the standard deviation (sigma) of a ground-motion prediction equation, exerts a very strong influence on the results of probabilistic seismic-hazard analysis (PSHA). This is especially so at the low annual exceedance frequencies considered for nuclear facilities; in these cases, even small reductions in sigma can have a marked effect on the hazard estimates. Proper separation and quantification of aleatory variability and epistemic uncertainty can lead to defensible reductions in sigma. One such approach is the single-station sigma concept, which removes that part of sigma corresponding to repeatable site-specific effects. However, the site-to-site component must then be constrained by site-specific measurements or else modeled as epistemic uncertainty and incorporated into the modeling of site effects. The practical application of the single-station sigma concept, including the characterization of the dynamic properties of the site and the incorporation of site-response effects into the hazard calculations, is illustrated for a PSHA conducted at a rock site under consideration for the potential construction of a nuclear power plant.
Y1  - 2014
U6  - https://doi.org/10.1785/0120130196
SN  - 0037-1106
SN  - 1943-3573
VL  - 104
IS  - 4
SP  - 1601
EP  - 1619
PB  - Seismological Society of America
CY  - Albany
ER  -