An application of disjunctive kriging for earthquake ground motion estimation |
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Authors: | James R Carr Eddy D Deng and Charles E Glass |
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Institution: | (1) Department of Geological Engineering, University of Missouri, 65401 Rolla, Missouri, USA;(2) Department of Mining and Geological Engineering, University of Arizona, 85721 Tucson, Arizona, USA |
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Abstract: | For earthquake ground motion studies, the actual ground motion distribution should be reproduced as accurately as possible. For optimal estimation of ground motion, kriging has been shown to provide accurate estimates. Although kriging is accurate for this application, some estimates it provides are underestimates. This has dire consequences for subsequent design for earthquake resistance. Kriging does not provide enough information to allow an analysis of each estimate for underestimation. For such an application, disjunctive kriging is better applied. This advanced technique quantifies the probability that an estimate equals or exceeds particular levels of ground motion. Furthermore, disjunctive kriging can provide improved estimation accuracy when applied for local estimation of ground motion. |
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Keywords: | disjunctive kriging nonlinear geostatistics kriging earthquake ground motion |
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