| 一种基于有限动态源的烈度估计方法 |
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| 引用本文： | 许力生, 张旭, 魏强, 李春来. 一种基于有限动态源的烈度估计方法[J]. 地球物理学报, 2016, 59(10): 3684-3695, doi: 10.6038/cjg20161015 |
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| 作者姓名： | 许力生 张旭 魏强 李春来 |
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| 作者单位： | 中国地震局地球物理研究所, 北京 100081 |
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| 基金项目： | 地震行业专项（201408014）和中国地震局地球物理研究所基本业务费（DQJB14B01）联合资助. |
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| 摘 要： | 首先，基于地震烈度与震级和震中距或震源距的经验关系，考虑实际地震断层的有限性以及几何学和运动学特性，提出了一种基于有限动态源模型的烈度预估方法.然后，利用数值实验讨论了体现几何学和运动学特性的参数的作用以及断层的倾角和破裂速度的影响；最后，将这种方法应用于近年来发生的两次破坏性地震，讨论了这种方法的实用性与不足之处.在实时获取破裂过程图像成为可能的今天，用这种方法预估烈度对于震后救援十分重要.
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| 关 键 词： | 地震烈度 有限动态源 估计方法 数值试验 实际应用 |
| 收稿时间： | 2016-02-01 |
| 修稿时间： | 2016-03-22 |
A method for estimating the earthquake intensity caused by a finite-dynamic source |
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| XU Li-Sheng, ZHANG Xu, WEI Qiang, LI Chun-Lai. A method for estimating the earthquake intensity caused by a finite-dynamic source[J]. Chinese Journal of Geophysics (in Chinese), 2016, 59(10): 3684-3695, doi: 10.6038/cjg20161015 |
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| Authors: | XU Li-Sheng ZHANG Xu WEI Qiang LI Chun-Lai |
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| Affiliation: | Institute of Geophysics, China Earthquake Administration, Beijing 100081, China |
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| Abstract: | At first, a method to be used to quickly estimate the intensity caused by a destructive earthquake is proposed based on empirical relationship between intensity and magnitude as well as epicentral or hypocentral distance, considering the finiteness and the kinematic and geometrical feature of real faults. Then, the numerical tests are employed to illustrate the effects of the parameters reflecting the kinematic and geometrical feature and the influence of fault dip and rupture velocity. Finally, the method is applied to two destructive earthquakes which have occurred in our country recent years in order to illustrate its practical value and shortage. At the present time when real-time obtaining of the rupture process image is coming true, the method by which the intensity is able to be quickly obtained appears especially significant. |
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| Keywords: | Earthquake intensity Finite-dynamic source Estimating method Numerical test Practical application |
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