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首页> 外文期刊>Bulletin of earthquake engineering >The contribution of seismic data in microzonation studies for downtown L'Aquila
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The contribution of seismic data in microzonation studies for downtown L'Aquila

机译：地震数据在拉奎拉市中心微区划研究中的贡献

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After the 2009 April 6th Mw 6.3 L'Aquila earthquake (Central Italy) the Italian Civil Defense Department promoted the microzoning study in the ten zones in the epicentral area that suffered major damage. In this paper we present the activities and the results concerning a temporary seismic network installed in the historical L'Aquila city center indicated as "macroarea 1" in the microzoning project. Seismic data were collected to investigate the amplification effects in the city and to support the microzoning activities in verifying both geological profiles and 1D numerical modeling of the seismic response of the city. The conventional spectral approaches using both microtremor and earthquake data allowed to determine the fundamental resonance frequencies and the amplification factors within the city respectively. The spatial variability of these quantities can be related to the geological and geomorphologic characteristics of the investigated area. A comparison between the network data and the data recorded by the two strong motion instruments installed in the city was also made. This allows verifying the relative response of the accelerometric stations that recorded in the city the major events of the sequence.
机译：在2009年4月6日发生的6.3拉奎拉Mw 6.3地震（意大利中部）之后，意大利民防部在震中地区十个遭受严重破坏的地区中推动了微区划研究。在本文中，我们介绍了有关微分区项目中安装在L'Aquila历史悠久的市中心的临时地震网络的活动和结果，该网络被标记为“宏区域1”。收集了地震数据，以研究城市的放大效应，并支持微分区活动，以验证城市的地震剖面和地质地震响应的一维数值模型。使用微震和地震数据的常规频谱方法可以分别确定城市内的基本共振频率和放大系数。这些数量的空间变异性可能与研究区域的地质和地貌特征有关。还比较了网络数据和城市中安装的两种强力运动仪器记录的数据。这允许验证记录在城市中的主要事件序列的加速度计测站的相对响应。

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