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首页> 外文期刊>Bulletin of earthquake engineering >On linear site amplification behavior of crustal and subduction interface earthquakes in Japan: (1) regional effects, (2) best proxy selection
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On linear site amplification behavior of crustal and subduction interface earthquakes in Japan: (1) regional effects, (2) best proxy selection

机译：日本地壳和俯冲界面地震线性部位扩增行为：（1）区域效应，（2）最佳代理选择

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A strong-motion database is compiled from KIK-Net Archive of Japan (kyoshin.bosai.go.jp) with following criteria: shallow crustal and subduction interface events between 2000 and 2016, recorded within 300km and moment magnitude, M-w range is 4.9-7. Time-based average of shear-wave velocity profiles up to different depths 10m (V-S10), 20m (V-S20), 30m (V-S30) and 50m (V-S50) are computed. Only stations with 200V-S301500m/s and the shear-wave velocity (Vs) profiles of the site reaches 800 m/s (h800) are used. Then ground-motion prediction equations for crustal and interface earthquakes are generated for surface motions, borehole motions, and surface-to-borehole spectral ratios (SBSR). The linear site response effect in surface motion equations are modeled in terms of h800 and site proxies: V-S10, V-S20, V-S30, and V-S50. The borehole-motion and SBSR models use Vs at borehole depth, and impedance ratio and h800, respectively. The crustal earthquakes generally produce higher ground-motions than interface events at rock site. The site behavior of crustal and interface earthquakes are found statistically different. The difference in short-period site factor is not more than 5%, whereas, at long-period site factor, crustal motions are amplified 13% more than interface motions. Applying the borehole motion and SBSR models, the estimated surface motions are compared with observed surface motions. The misfit is generally found less than 6%. It is concluded that SBSR can be a good indicator for site-specific amplification. Simple inference test is applied to the between-site residuals of surface motion and SBSR models to understand the regional variations in site amplification. In the point of site amplification, the interface earthquakes are more sensitive to regional effects than crustal earthquakes. The comparisons of between-site residuals and site amplification estimates computed with alternative site proxies reveal that at short periods V-S20 is sufficient to pre
机译：在日本的kik-net存档编制了一个强大的动作数据库（kyoshin.bosai.go.jp），其中包含以下标准：2000和2016之间的浅地壳和俯冲界面事件，记录在300km和瞬间幅度范围内，MW范围为4.9 - 7。计算基于时间的剪切波速度分布的平均值，到达不同深度10m（V-S10），20m（V-S20），30m（V-S30）和50m（V-S50）。仅使用具有200＆LT; 1500m / s的站点达到该部位的剪切波速度（Vs）剖面达到800米/秒（H800）。然后产生用于地壳和界面地震的地面运动预测方程，用于表面运动，钻孔运动和表面对钻孔谱比（SBSR）。表面运动方程中的线性站点响应效果是以H800和现场代理建模的：V-S10，V-S20，V-S30和V-S50。钻孔运动和SBSR模型分别在钻孔深度和阻抗比和H800处使用VS。地壳地震通常产生比岩石部位的界面事件更高的地面运动。地壳和接口地震的网站行为在统计上发现了不同的地震。短时间现场因子的差异不大于5％，而在长期现场因子中，出壳动作比界面运动增加了13％。施加钻孔运动和SBSR模型，将估计的表面运动与观察到的表面运动进行比较。错误排放通常发现少于6％。得出结论，SBSR可以是特异性地区扩增的良好指标。简单的推理测试应用于表面运动的场地和SBSR模型的场地残差，以了解现场扩增的区域变化。在现场扩增的点，界面地震对区域效应比地壳地震更敏感。使用替代网站代理计算的场地残差和站点放大估计的比较表明，在短时间内V-S20足以预先

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