3篇
您的检索式：作者名="ROHRBACH Eric"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 利用地脉动探测北京城区的地震动场地响应显示文摘为获取北京城区的地震动场地响应资料,2007年夏天在北京市开展了脉动背景噪声的阵列观测.利用北京市五环内间距1~2km的600多个点位的地脉动观测记录,采用H/V谱比分析法得到了北京城区高分辨的沉积层卓越频率和放大倍数及沉积盖层厚度分布.本文结果与地表地形和新构造运动的分布较为相符,得到的沉积盖层厚度与早期基于有限钻孔资料给出结果总体上较为一致,但分辨精度明显提高.这些结果为北京市规划和抗震设防提供了重要的科学基础资料,为城市地球物理探测获取地下三维结构资料探索了可行的途径。 | 陈棋福 刘澜波 王伟君 Eric Rohrbach | 2008 | 科学通报2008，53，18： | 37 |
| 2 | Site effects on earthquake ground motion based on microtremor measurements for metropolitan Beijing显示文摘A campaign of microtremor measurements was conducted in summer 2007 for assessing local site effects of seismic strong ground motion in metropolitan Beijing. Using the measurements from over 600 sites with approximately 1―2 km spacing covering the entire area inside Beijing’s 5th Beltway, we present the analysis results in the form of contours of the predominant resonant frequency, the thick- ness of the uppermost soft sediments, and the ground motion amplification factor. The microtremor- derived soft sediment thickness is generally in agreement with previous results based on much sparser borehole data, with the revealing of more short-wavelength undulations, which coincide with major geomorphological and neotectonic expressions in metropolitan Beijing. This study provides additional valuable information to the earthquake-resistant design of civil infrastructures and seismic hazard response in metropolitan Beijing. It also provides a feasible geophysical approaching to explore the 3-D structure beneath metropolitan cities. | CHEN QiFu LIU LanBo WANG WeiJun ROHRBACH Eric | 2009 | Chinese Science Bulletin2009，54，2： | 15 |
| 3 | Ambient noise as the new source for urban engineering seismology and earthquake engineering: a case study from Beijing metropolitan area显示文摘In highly populated urban centers, traditional seismic survey sources can no longer be properly applied due to restrictions in modern civilian life styles. The ambient vibration noise, including both microseisms and microtremor, though are generally weak but available anywhere and anytime, can be an ideal supplementary source for conducting seismic surveys for engineering seismology and earthquake engineering. This is fundamentally supported by advanced digital signal processing techniques for effectively extracting the useful information out from the noise. Thus, it can be essentially regarded as a passive seismic method. In this paper we first make a brief survey of the ambient vibration noise, followed by a quick summary of digital signal processing for passive seismic surveys. Then the applications of ambient noise in engineering seismology and earthquake engineering for urban settings are illustrated with examples from Beijing metropolitan area. For engineering seismology the example is the assessment of site effect in a large area via microtremor observations. For earthquake engineering the example is for structural characterization of a typical reinforced concrete high-rise building using background vibration noise.By showing these examples we argue that the ambient noise can be treated as a new source that is economical, practical, and particularly valuable to engineering seismology and earthquake engineering projects for seismic hazard mitigation in urban areas. | Lanbo Liu Qi-fu Chen Weijun Wang Eric Rohrbach | 2014 | Earthquake Science2014，27，1： | 7 |
您所在的机构暂未开通此部分的功能，请联系管理员