| 近源地震动峰值加速度衰减关系影响因素分析 |
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| 引用本文： | 黄慧华.近源地震动峰值加速度衰减关系影响因素分析[J].力学学报,1998,6(1):61-66. |
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| 作者姓名： | 黄慧华 |
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| 作者单位： | 国家地震局地质研究所,北京 100029 |
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| 摘 要： | 本文收集了丰富的强震资料, 以峰值加速度为例, 采用简单且体现近场峰值加速度PGA震级饱和和距离饱和特性的衰减模型, 研究了表征震级与距离饱和效应的R0(M)的性质。R0与震级相关, 同时与震源性质、地震波频谱有关。在单个地震的R0(M)的求取中, 由于R0与系数d几乎呈线性关系, 所以要求单个地震R0的值, 必须先根据理论约束确定d的大小。在检验衰减方程的预测效果时, 不仅要判断衰减曲线是否反映了实测资料的平均变化趋势, 而且要判断实测资料是否绝大多数落在84%及16%概率水平的预测曲线之内(±σ之间).
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| 关 键 词： | 峰值加速度PGA 近场 震级饱和 距离饱和 衰减方程 |
| 收稿时间： | 1997-06-10 |
| 修稿时间： | 1997-11-15 |
ANALYSIS OF INFLUENCE OF FACTORS ON ATTENUATION RELATION OF NEAR SOURCE GROUND MOTION PEAK ACCELERATION |
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| Huang Huihua.ANALYSIS OF INFLUENCE OF FACTORS ON ATTENUATION RELATION OF NEAR SOURCE GROUND MOTION PEAK ACCELERATION[J].chinese journal of theoretical and applied mechanics,1998,6(1):61-66. |
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| Authors: | Huang Huihua |
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| Institution: | Institute of Geology, State Seismological Bureau, Beijing 100029 |
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| Abstract: | The attenuation model for magnitude and distance saturations of near source peak ground acceleration is discussed by regression analysis of data of strong ground motion records in the paper. The result shows that the effect of magnitude and distance saturations to be characterized by R0(M) depends not only on magnitude but also on the behaviors of the source and its spectra. The influence of factors on attenuation relation of near source ground motion peak acceleration are also discussed in accordance with the attenuation regression models, condition of strong motion record site, mechanism of earthquake, and so on. |
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| Keywords: | Peak ground acceleration Attenuation model Ground motion saturation Near source PGA |
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