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首页> 外文期刊>Pure and Applied Geophysics >Site Effect and its Relationship to the Intensity and Damage Observed in the June 27, 1998 Adana-Ceyhan Earthquake
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Site Effect and its Relationship to the Intensity and Damage Observed in the June 27, 1998 Adana-Ceyhan Earthquake

机译：1998年6月27日阿达纳-杰伊汉地震观测到的场地效应及其与强度和破坏的关系

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摘要

The site response at 15 stations in the Adana-Ceyhan region (Southern Turkey) is calculated from the recordings of aftershocks of June 27, 1998 Adana-Ceyhan earthquake (M S =6.2) by using the Standard Spectral Ratio (SSR) and the Horizontal-to-Vertical Spectral Ratio (HVSR) methods. While the two methods are in good harmony at a few stations in determining the site effects, they show differences on the estimated amplifications or on the site resonance frequencies at most stations. It was not clear which one of the two methods underestimates or overestimates the amplification values. We observe that at some stations, where the local site conditions are rather complex, the vertical component records are strongly influenced from the local soil conditions. Thus, the HVSR method fails at these stations. The SSR method underestimates the amplifications at some stations since the rock site, selected as reference site, has its own site response and/or the path correction we applied, considering the geometrical spreading factor only, is insufficient. At the sites where high intensity values were observed, we found high amplifications. The fundamental soil frequencies characterize the damage properties observed in the Adana-Ceyhan earthquake. The fundamental soil frequency is nearly at 1.1 Hz at the Ceyhan site, where severe damage was observed in the 5–6 story buildings, while the fundamental soil frequency is between 3–6 Hz at the Adana site, where damage was in the low-story buildings. Therefore, in addition to inefficient construction practices, it is clear that the resonance effects have also contributed to the observed damage.
机译：使用标准光谱比（SSR），根据1998年6月27日阿达纳-塞罕地震（MS = 6.2）的余震记录，计算出Adana-Ceyhan地区（土耳其南部）的15个站点的站点响应以及水平与垂直光谱比（HVSR）方法。虽然这两种方法在确定站点效应的几个站点上是很协调的，但它们在大多数站点的估计放大率或站点共振频率上显示出差异。尚不清楚这两种方法中的哪一种低估或高估了扩增值。我们观察到，在某些站点上，当地的现场条件相当复杂，垂直分量记录受本地土壤条件的强烈影响。因此，HVSR方法在这些站点失败。 SSR方法低估了某些站点的放大率，因为被选作参考站点的岩石站点具有自己的站点响应和/或仅考虑了几何扩展因子而应用的路径校正是不够的。在观察到高强度值的部位，我们发现了高扩增。土壤的基本频率表征了在阿达纳-杰伊汉地震中观察到的破坏特性。在Ceyhan场地，基本土壤频率接近1.1 Hz，在5–6层建筑中观察到严重破坏，而在Adana场地，基本土壤频率在3–6 Hz之间，那里的破坏程度较低。故事建筑。因此，除了无效的施工方法外，很明显，共振效应也导致了观察到的损坏。

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