...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of earthquake engineering >Site effects of the Roio basin, L'Aquila
【24h】

Site effects of the Roio basin, L'Aquila

机译：拉奎拉Roio盆地的场地影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

During the microzonation studies of the April 6th, 2009 L'Aquila earthquake, we observed local seismic amplifications in the Roio area-a plane separated from L'Aquila city center by mount Luco. Six portable, digital instruments were deployed across the plain from 15 April to mid-May 2009. This array recorded 152 aftershocks. We analyzed the ground motion from these events to determine relative site amplification within the plain and on surrounding ridges. Horizontal over vertical spectral ratio on noise data (HVSRN), aftershock recordings (HVEQ) and standard spectral ratio (SSR) showed amplifications at 1.3 and 4.0 Hz on quaternary deposits. Seismic amplifications in the frequency range of 4 and 6 Hz were also observed on a carbonate ridge of Colle di Roio, on the northwestern border of the plateau. A small amplification was noticed near the top of mount Luco, another rocky site. Large discrepancies in the amplification levels between methods have been observed for these sites, but the HVSRN, HVEQ and SSR gave similar results at the stations located in the Roio plain. On the rocky sites, the SSR was more reliable than the HVSRN at estimating the transfer function of the site, even if the resonance frequency seemed to be well detected by the latter method.
机译：在2009年4月6日L'Aquila地震的微区研究中，我们观察到Roio地区的局部地震放大现象。该区域是由Luco与L'Aquila市中心分开的平面。从2009年4月15日到5月中旬，在平原上部署了六台便携式数字仪器。该阵列记录了152次余震。我们分析了这些事件引起的地震动，以确定平原内和周围山脊上的相对位置放大。噪声数据（HVSRN），余震记录（HVEQ）和标准频谱比（SSR）的水平与垂直频谱比显示，第四纪沉积物在1.3和4.0 Hz处放大。在高原西北边界的Colle di Roio的碳酸盐脊上也观察到了4 Hz和6 Hz频率范围内的地震放大。在另一个岩石站点卢科山的顶部附近发现了一个小的放大。对于这些位点，已观察到方法之间的扩增水平存在较大差异，但HVSRN，HVEQ和SSR在位于Roio平原的站点上给出了相似的结果。在岩石站点上，即使通过后一种方法似乎可以很好地检测到共振频率，在估计站点的传递函数时，SSR比HVSRN更可靠。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号