Large-Scale 3D Ground Motion Simulations of a Moderate-Sized Earthquake at Kashiwazaki-Kariwa Nuclear Power Plant in Japan
Publication: Geo-Congress 2022
ABSTRACT
Large-scale ground motion simulations were carried out in this research to simulate an Mw 4.4 aftershock of the 2007 Niigata-Chuetsu earthquake that was recorded at the Kashiwazaki-Kariwa Nuclear Power Plant (KKNPP) in Japan. Ground motions up to a maximum frequency of 3 Hz at this site were generated using SW4 on the high-performance computing clusters at Los Alamos National Laboratory. Sub-surface soil characterization information was combined from KKNPP, Kyoshin Network (K-NET), and Kiban Kyoshin Network (KiK-net) using a kriging algorithm to produce a high-resolution soil model for incorporation in the large-scale model, and contrasted with other modeling techniques. Simulated ground motion histories are validated qualitatively using a Goodness-of-Fit scoring scheme. In addition, simulations are compared with both horizontal and vertical ground motion prediction equations (GMPEs). Overall, the simulations are considered validated by the recorded data and GMPEs.
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Geo-Congress 2022
Pages: 92 - 101
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Published online: Mar 17, 2022
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