Estimation of S-wave Velocity at KiK-net Hakuta and Hino Stations, and Re-evaluation of Bedrock Motions during the 2000 Tottoriken-seibu Earthquake
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概要
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S-wave velocity of KiK-net Hakuta and Hino stations is estimated based on the strong motion records of the foreshocks of the 2000 Tottoriken-seibu earthquake. Assuming the estimated S-wave velocity as the initial stiffness, simulation analyses of the main shock base motions are performed from the surface motions by the characteristic method in consideration of the soil nonlinearity of the surface layers. The bedrock motions during the 2000 Tottoriken-seibu earthquake are evaluated from the analysis results. The maximum acceleration of horizontal direction is about 300 cm/s<SUP>2</SUP> in Hakuta, and 330-490 cm/s<SUP>2</SUP> in Hino, and the maximum velocity is 23-29 cm/s in Hakuta, and 29-57 cm/s in Hino. The maximum amplitude of pseudo velocity response spectrum is 40-50 cm/s in Hakuta, and 90-120 cm/s in Hino. These results are consistent with the levels of the strong ground motions estimated from the attenuation relation.
- 一般社団法人 日本地震工学会の論文
一般社団法人 日本地震工学会 | 論文
- Scope of this issue
- Study on the Priority of Measuring against Scenario Earthquakes Based on Seismic Risk Estimation
- Investigation on Actual Disaster Responses in Local Governments in terms of Information Sharing
- Empirical Correction of Ground Motion Prediction Equations of Response Spectra at Rock Sites for Near-Field Earthquakes Considering Amplification Effect within Deep Subsurface Structure
- A Study for Estimating Suspension Time of Railway Lines Due to Earthquake