Investigation for Strong Ground Shaking across the Taipei Basin during the M(w) 7.0 Eastern Taiwan Offshore Earthquake of 31 March 2002

NCU Institutional Repository > 地球科學學院 > 地球物理研究所 > 期刊論文 > Item 987654321/50524

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50524

题名:	Investigation for Strong Ground Shaking across the Taipei Basin during the M(w) 7.0 Eastern Taiwan Offshore Earthquake of 31 March 2002
作者:	Huang,YL;Huang,BS;Wen,KL;Lai,YC;Chen,YR
贡献者:	地球物理研究所
关键词:	1995 KOBE EARTHQUAKE;SEISMIC-WAVES;MOTION;SIMULATION;DAMAGE
日期:	2010
上传时间:	2012-03-27 17:36:08 (UTC+8)
出版者:	國立中央大學
摘要:	According to reconstructed ground motion snapshots of the northern Taiwan area during the M(w) 7 0 eastern Taiwan offshore earthquake of 31 March 2002, the composite effects indicated complicated wave propagation behavior in the ground motion of the Taipei basin A major low frequency pulse arose after the S-wave with the duration of about 20 seconds was observed in northern Taiwan and dominated the radial direction. Observed waveforms of a low frequency pulse show amplification during the seismic wave across the Taipei basin from its eastern edge to western portion. This effect has been considered to be generated by an unusual source radiation, deep Moho reflection or basin bottom surface. In this study, recorded ground motions from a dense seismic network were analyzed using a frequency-wavenumber spectrum analysis for seismic wave propagation properties We investigated temporal and spatial variations in strong shaking in different frequency bands. Results show that a simple pulse incident seismic wave strongly interacts with inside soft sediments and the surrounding topography of the Taipei basin which in turn extends its shaking duration. Evidence showed that seismic waves have been reflected back from its western boundary of basin with a dominant frequency near one Hz Findings in this study have been rarely reported and may provide useful information to further constrain a three-dimensional numerical simulation for the basin response and velocity structure, and to predict ground motions of further large earthquakes
關聯:	TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
显示于类别:	[地球物理研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	497	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....