Ground motion prediction equation for the Kathmandu Valley, Nepal based on strong motion records during the 2015 Gorkha Nepal earthquake sequence
Ground motion prediction equation for the Kathmandu Valley, Nepal based on strong motion records during the 2015 Gorkha Nepal earthquake sequence
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DOI：
10.1016/j.soildyn.2020.106208
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发表时间：
2020-08-01
影响因子：
4
通讯作者：
Takai, Nobuo
中科院分区：
文献类型：
--
作者：
Mori, Takuho;Shigefuji, Michiko;Takai, Nobuo
利用在加德满都谷地八个地点观测到的 2015 年廓尔喀尼泊尔地震余震中 5.0 至 7.3 级的强震动记录，构建了加德满都谷地各地点加速度响应谱的单地点地震动预测方程 (GMPE)。场地项的回归系数与加德满都谷地每个场地的基岩深度具有很强的相关性。因此，以基岩深度为参数，推广了适用于整个加德满都谷地1~10 s长周期范围的新GMPE。我们将此 GMPE 应用于最大的余震。因此，在每个沉积站，GMPE 预测值的残差均小于现有 GMPE 预测值，并且观测到的响应峰值
Single-site ground motion prediction equations (GMPEs) for the acceleration response spectra of each site in the Kathmandu Valley was constructed using strong motion records of magnitude 5.0 through 7.3 the 2015 Gorkha Nepal earthquake aftershocks observed at eight sites in the Kathmandu Valley. The regression coefficient for the site term has a strong correlation with the bedrock depth at each site in the Kathmandu Valley. Therefore, a new GMPE applicable to the whole Kathmandu Valley in the long-period range of 1-10 s was generalized using the bedrock depth as a parameter. We applied this GMPE to the largest aftershock. Consequently, at each sedimentary station, the residuals of the predicted value by GMPE are smaller than those predicted by the existing GMPE, and the peaks of the observed response