USE OF ANALYSIS OF VARIANCE FOR THE INVESTIGATION OF REGIONAL DEPENDENCE OF STRONG GROUND MOTIONS
USE OF ANALYSIS OF VARIANCE FOR THE INVESTIGATION OF REGIONAL DEPENDENCE OF STRONG GROUND MOTIONS
复制标题
利用方差分析研究强地震动的区域依赖性
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
J. Douglas
中科院分区：
文献类型：
--
作者：
J. Douglas
被称为方差分析的统计技术被应用到一个大的强震数据集，以调查强地面运动是否表现出区域依赖性。当选择强震记录用于推导地震动预测方程时，以及当选择一个地理区域的强震记录用于另一个区域的设计时，这个问题是重要的。本文选取了三个强震资料丰富的地区（加州、新西兰和欧洲活动区）。研究了阻尼为5%时0.2、0.5和1s时的峰值地面加速度（PGA）和反应谱加速度（SA）等4个强震参数的区域变异性。对加州和新西兰以及欧洲和新西兰的地震动进行的分析表明，几乎没有证据表明这两个地区的地震动存在显著差异，尽管这一结论是基于有限的数据。比较加州和欧洲的地面运动，其中有更多的数据，表明有证据表明，在加州比在欧洲显着更高的地面运动，虽然这种差异可能是由于不确定性的幅度转换公式所采用的。介绍
The statistical technique known as analysis of variance is applied to a large set of strong-motion data to investigate whether strong ground motions show a regional dependence. This question is important when selecting strong-motion records for the derivation of ground motion prediction equations and also when choosing strong-motion records from one geographical region for design purposes in another region. Three regions with much strong-motion data (California, New Zealand and active parts of Europe) are investigated here. The regional variability of four strong-motion parameters investigated, namely peak ground acceleration (PGA) and response spectral acceleration (SA) for 5% damping at 0.2, 0.5 and 1s. An analysis of ground motions in California and New Zealand and Europe and New Zealand shows that there is little evidence for significant differences in ground motions between the two regions considered, although this conclusion is based on limited data. A comparison of ground motions in California and Europe, for which there is more data available, shows that there is evidence for significantly higher ground motions in California than in Europe although some of this difference may be attributable to uncertainties in the magnitude conversion formulae adopted. INTRODUCTION