EVALUATION OF HANGING WALL EFFECTS ON GROUND MOTION ATTENUATION RELATIONSHIP CORRECTING THE SITE EFFECTS
EVALUATION OF HANGING WALL EFFECTS ON GROUND MOTION ATTENUATION RELATIONSHIP CORRECTING THE SITE EFFECTS
复制标题
悬墙效应对地震动衰减关系的评估以及场地效应的校正
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
S. Midorikawa
中科院分区：
文献类型：
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作者：
H. Si;H. Tsutsumi;S. Midorikawa
在这项研究中，首先我们提出了一种纠正场地效应的简单方法。在该方法中，观测站的场地效应校正因子被定义为观测到的强运动与基岩上定义的参考衰减模型预测之间的残差。因此，如果一个站总是显示较强或较弱的运动，它将被校正以显示基岩上的平均运动。利用校正后的强震动记录，我们可以在受场地条件影响相对较小的情况下分析上盘效应。该方法应用于 1994 年 Northridge 地震，该地震的上盘效应已被指出。结果表明，总体上本研究得出的上墙效应与以往的研究结果几乎一致。
In this study, firstly we present a simple method to correct for site effects. In this method, the site effect correction factor for an observation station is defined as the residual between the observed strong motion and the prediction by a reference attenuation model defined on bedrock. Consequently, if a station always shows stronger or weaker motion it will be corrected to show an average one on bedrock. Using the corrected strong motion records then we can analyze the hanging wall effects with relatively smaller influence of site condition. The method is applied to the 1994 Northridge earthquake which the hanging wall effects have been indicated. The results indicated that, generally the hanging wall effects derived in this study is almost consistent with the results in the past study.