| 岩石流变模型在孕震过程和前兆研究中的应用 |
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| 引用本文： | 张国民,梁北援.岩石流变模型在孕震过程和前兆研究中的应用[J].地震学报,1987,9(4):384-391. |
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| 作者姓名： | 张国民 梁北援 |
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| 作者单位： | 国家地震局分析预报中心 |
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| 摘 要： | 本文用岩石流变模型讨论了地震孕育过程,以定常应变速率为地震孕育过程的基本条件.在解析解的基础上,计算了孕震过程中应力、应变、应变速率和能量等各种特征量随时间的变化曲线.在此基础上,分析了地震孕育过程的阶段性.本文还着重讨论了孕震过程中的各种前兆现象,探讨了多种前兆异常的综合机制,并初步给出了前兆现象和孕震过程之间的可能联系.
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| 关 键 词： | 流变模型 地震孕育 前兆 应力 应变速率 |
THE APPLICATION OF A RHEOLOGIC MODEL OF ROCK TO THE SEISMOGENY OF A GREAT EARTHQUAKE AND RESEARCH ON SEISMIC ANOMALIES |
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| Affiliation: | Center for Analysis and Prediction, State Seismological Bureau |
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| Abstract: | In this paper we discuss the seismogenic process of a great earthquake by using a rheolo-gic model of rock. We regard the constant strain rate as the condition of seismogeny for a great earthquake. On the basis of analytic results, the curves of variation of stress, strain, strain rate and energy with time are calculated. Upon such curves, the stage features of the seismogenic process of a great earthquake is analyzed. And the possible mechanisms of the various seismic precursory phenomena is emphatically discussed, and the relation between the pre-seismic anomalous phenomena and the seismogenic process is given. |
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