ABSTRACT

This paper illustrates a novel method for stochastic simulation of the vertical components of the near-field pulse-less earthquakes. The model parameters are estimated for 120 near-field records and regressed against the scenario parameters including moment magnitude, epicentral distance, hypocentral depth, and the shear-wave velocity. The model is verified by simulating records for nine different scenarios and the 50^th and 84^th percentile values of the resulted spectrum are compared with the NGA-West2 vertical attenuation results. The results show that the proposed model can generate vertical records according to scenario cases in which their response spectrum is compatible with those of NGA-West2 GMPEs.

摘要

本文阐述了一种新的随机模拟近场无脉冲地震垂直分量的方法。对 120 个近场记录的模型参数进行了估计，并根据情景参数（包括矩震级、震中距离、震源深度和剪切波速度）进行回归。该模型通过模拟九种不同场景的记录进行验证，并将所得频谱的第 50和第 84^百分位值与 NGA-West2 垂直衰减结果进行比较^。结果表明，所提出的模型可以根据场景案例生成垂直记录，其中它们的响应谱与 NGA-West2 GMPE 的响应谱兼容。