Ambient vibration noise as the new source for urban engineering seismology and earthquake engineering: Case studies from the metropolitan area of Beijing
In highly populated urban centers, traditional seismic survey sources can no longer be properly applied due to restricts 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 premised with the advanced digital signal processing techniques for effectively extracting the useful information out from the noise. Thus, it is essentially a passive seismic method. In this paper we will 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 vibration noise in engineering seismology and earthquake engineering for urban settings are illustrated with examples from the metropolitan area of Beijing. 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. With showing these case studies we argue that the ambient vibration 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 Qifu Chen Weijun Wang Cheng Qi Eric Rohrbach
Department of Civil & Environmental Engineering, University of Connecticut, USA Institute of Earthqu Institute of Earthquake Science, China Earthquake Administration, Beijing, China Department of Civil & Environmental Engineering, University of Connecticut, USA
国际会议
成都
英文
25-35
2010-06-14（万方平台首次上网日期，不代表论文的发表时间）