| 埋藏基岩地形对地震波动影响的模拟研究 |
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| 引用本文： | 万志清,彭一民,孙进忠.埋藏基岩地形对地震波动影响的模拟研究[J].地球科学,1993,2(1). |
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| 作者姓名： | 万志清 彭一民 孙进忠 |
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| 作者单位： | 桂林冶金地质学院水工系
(万志清)，中国地质大学(北京)水文系
(彭一民)，中国地质大学(北京)水文系(孙进忠) |
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| 摘 要： | 本文以超声地震模型试验为基础,着重从地震波的强度方面来阐明埋藏基岩地形对地震波动的影响,提出了利用振动能量分析地震动问题的重要性,理论分析及实验结果表明,埋藏基岩地形对地震波动的影响表现为:一方面基岩面凹凸不平,致使基岩面上不同部位接收能量大小不同;另一方面,基岩的凹凸面对地震波产生汇聚与发散作用,这两方面共同作用的结果使得地表不同地点表现出不同的地震动强度。
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| 关 键 词： | 埋藏基岩地形 模型试验 北京凹陷 汇聚与发散 振动能量 |
MODELLING STUDY OF EFFECTS OF UNDERLYING-BEDROCK TOPOGRAPHY ON EARTHQUAKE WAVE MOTION |
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| Wan Zhiqing.MODELLING STUDY OF EFFECTS OF UNDERLYING-BEDROCK TOPOGRAPHY ON EARTHQUAKE WAVE MOTION[J].Earth Science-Journal of China University of Geosciences,1993,2(1). |
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| Authors: | Wan Zhiqing |
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| Abstract: | This paper emphasizes the earthquake strength and studies the effects of underlying-bedrock topography on the earthquake wave motion through supersonic seismic modelling test. It puts forward the importance of analyzing the earthquake wave motion by utilizing the vibrating energy. Theoretical and experimental results show that the underlying-bedrock topography can change the earthquake wave strength of ground surface, because not only different places on underlying-bedrock surface pick up different energy from the same source, but also the asperities on the bedrock surface diverge and converge the seismic waves. These make different earthquake strength appear at different places of the ground surface. |
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| Keywords: | underlying-bedrock topography modelling test Beijing Depression converge and diverge vibration energy |
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