| 局部地质条件对强地面运动影响的剪切波模拟 |
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| 引用本文： | 孙若昧, F.VACCARI, G.F.PANZA. 局部地质条件对强地面运动影响的剪切波模拟[J]. 地球物理学报, 2000, 43(01): 81-90, |
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| 作者姓名： | 孙若昧 F.VACCARI G.F.PANZA |
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| 作者单位： | 中国科学院地质与地球物理研究所,北京100101 |
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| 摘 要： | 采用多阶振型和有限差分联立的混合法，依据北京西集一郎府地区的地质条件，模拟了１９７６年唐山地震所引起的该区的剪切波运动；计算了工程上常用的峰值加速度和总能量．在夏垫断裂两侧的最大振幅和总能量的差异分别为２００％和７００％，研究结果可以解释唐山地震时西集一郎府一带所观测到的异常烈度．
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| 关 键 词： | 合成地震图 局部地质 唐山地震 西集一郎府 |
| 收稿时间： | 1998-10-29 |
| 修稿时间： | 1999-05-28 |
SH-WAVE MODELING OF INFLUENCE OF LOCAl GEOLOGICAL CONDITION ON STRONG GROUND MOTION |
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| SUN RUO-MEI, F.VACCARI, G.F.PANZA. SH-WAVE MODELING OF INFLUENCE OF LOCAl GEOLOGICAL CONDITION ON STRONG GROUND MOTION[J]. Chinese Journal of Geophysics (in Chinese), 2000, 43(01): 81-90, |
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| Authors: | SUN RUO-MEI F.VACCARI G.F.PANZA |
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| Affiliation: | Institute of Geology and Geophylsics, Chinese Academy of Sciences, Beijing 100101 |
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| Abstract: | In this paper a hybrid method, based on mode summation and finitedifferences, is used to simulate the ground inchon of SH wave in the Xiji-Langfuarea of Beijing induced by the 1976 Tangshan earthquake. We eshmate the maximumacceleration amplitude and total energy of ground inchon for engineering purposes. Onthe two sides of the Xiadian fault the maximum acceleration amplitude and totalenergy can vary by afactor of 200% and 700% respectively. Our results can explainthe observed anomalous intensity in the Xiji-Langfu area induced by the 1976Tangshan earthquake. |
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| Keywords: | Synthetic seismograms Local geological condition The Tangshanearthquake Xiji-Langfu |
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