• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of the Seismological Society of America >First-generation site-response maps for the Los Angeles region based on earthquake ground motions
【24h】

First-generation site-response maps for the Los Angeles region based on earthquake ground motions

机译：基于地震地面运动的洛杉矶地区第一代站点响应图

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

Ground-motion records from aftershocks of the 1994 Northridge earthquake and mainshock records from the 1971 San Fernando, 1987 Whittler Narrows, 1991 Sierra Madre, and 1994 Northridge earthquakes are used to estimate site response relative to a rock site for the urban Los Angeles area. Site response is estimated at 232 mainshock and 201 aftershock sites relative to a low-amplitude site in the Santa Monica Mountains. Average amplification values are calculated for the frequency bands: 1 to 3, 3 to 5, and 5 to 7 Hz. These bands are chosen based on limitations in aftershock recording equipment at lower frequencies and reduced significance to the building inventory at higher frequencies. Site amplification factors determined at the instrumented locations are grouped by the surficial geology and contoured to produce a continuous spatial estimation of amplification. The maps in this article represent the first attempt to produce estimates of site amplification based on observations of ground motion for such a large areal extent of the Los Angeles region. These maps are expected to evolve as more data become available and more analysis is done. [References: 34]
机译：1994年Northridge地震余震的地震动记录和1971 San Fernando，1987 Whittler Narrows，1991 Sierra Madre和1994 Northridge地震的主震记录被用来估计相对于洛杉矶市区岩石场所的场地响应。相对于圣莫尼卡山脉的低振幅站点，站点响应估计为232个主震站点和201个余震站点。计算以下频段的平均放大值：1至3、3至5和5至7 Hz。根据较低频率的余震记录设备的限制以及较高频率对建筑物清单的重要性降低来选择这些频段。在仪器位置确定的位点放大因子按表层地质进行分组，并绘制轮廓以产生连续的空间放大估计。本文中的地图代表了首次尝试，基于对洛杉矶地区如此大面积的地面运动的观测，得出了站点放大的估计值。随着更多数据的获取和更多分析的完成，这些地图有望发展。 [参考：34]

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