Location
St. Louis, Missouri
Presentation Date
12 Mar 1991, 2:30 pm - 3:30 pm
Abstract
Accounting for the measuring errors or uncertainties of magnitude and distance in addition to ground motion, the attenuation laws for peak horizontal ground acceleration (PGA), velocity(PGV). And displacement (PGD) are studied with a weighted consistent least-square regressional method (WCLSRM) proposed by the authors to obtain the functional relation among several random variables (R.V.). The saturation of ground motions near epicenter with respect to both magnitude and distance is also emphasized in the models. The result is that the scaling factors for distance and the linear term of magnitude in the attenuation relations regressed by the suggested method are about 16 to 28 percent in average larger than those from the routine method. The ground motion estimates are somewhat higher than the routine values for large earthquakes or at near field for small earthquake and saturate near the source. The prediction from the new model is very well consistent with the observed data from the three large earthquakes in the South America recently occurred and not considered in the regression.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1991 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Huo, Sun-Rong and Hu, Yuxian, "Attenuation Laws Considering M and R Uncertainties" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 3.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session08/3
Included in
Attenuation Laws Considering M and R Uncertainties
St. Louis, Missouri
Accounting for the measuring errors or uncertainties of magnitude and distance in addition to ground motion, the attenuation laws for peak horizontal ground acceleration (PGA), velocity(PGV). And displacement (PGD) are studied with a weighted consistent least-square regressional method (WCLSRM) proposed by the authors to obtain the functional relation among several random variables (R.V.). The saturation of ground motions near epicenter with respect to both magnitude and distance is also emphasized in the models. The result is that the scaling factors for distance and the linear term of magnitude in the attenuation relations regressed by the suggested method are about 16 to 28 percent in average larger than those from the routine method. The ground motion estimates are somewhat higher than the routine values for large earthquakes or at near field for small earthquake and saturate near the source. The prediction from the new model is very well consistent with the observed data from the three large earthquakes in the South America recently occurred and not considered in the regression.
