| 中国大陆不同类型地震序列的固体潮应力位相特征 |
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| 引用本文： | 高锡铭,王威中.中国大陆不同类型地震序列的固体潮应力位相特征[J].地震学报,1983,5(3):323-335. |
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| 作者姓名： | 高锡铭 王威中 |
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| 作者单位： | 国家地震局地震研究所 |
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| 摘 要： | 本文研究了中国大陆131个强震序列的潮汐应力的位相分布特征.关于潮汐最大剪应力所得到的结果是:对单发型地震序列和主发型地震序列,它们的主震位相都有明显的优势分布,而单发型地震序列的主震优势位相比主发型地震序列的主震优势位相高;在群发型地震序列中,可以区分出若干明显的丛集,由每个丛集的主震所组成的序列位相依次呈降低趋势;各种序列晚期强余震的位相也具有明显的优势分布.不同类型地震序列的潮汐最大剪应力的位相和潮汐流体静应力的位相组合特征,具有较明确的物理意义,它与岩石力学实验中的 A 型和 R 型加载的应力途径8,9],其实验结果有一定的对应关系.
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ON THE CHARACTERISTICS OF THE PHASE OF SOLID TIDAL STRESS FOR DIFFERENT TYPES OF EAR- THQUAKE SEQUENCES OCCURRED IN THE CONTINENT OF CHINA |
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| Affiliation: | Institute of Seismology, State Seismological Bureau, Wuhan, China |
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| Abstract: | In this paper, the characteristics of phase distribution of solid tidal stress for 131 strong earthquake sequences occurred in the continent of China have been studied.The results obtained about the maximum tidal shear stress are as follows: there is an apparent optimal distribution of phase of the main shock for the earthquake sequence of the single-shock type and main-shock type, but the optimal phase of the main shock of the single-shock type is significantly higher than that of the main-shock type; in the earthquake sequence of the swarm-shock type, it is easily observed that some apparent clusters can be distinguished, and the phases of the sequence which consists of the main earthquake in each cluster tend to decrease orderly; the phase of late strong aftershocks of various types of earthquake sequences are also of optimal distribution.The composite characteristics of the phases of the maximum tidal shear stress and tidal hydrostatic stress of different earthquake sequences have definite physical significance, which is also an intended effect of the stress path of A type and B type loading processes in rock acoustic emission experiments in our problem. |
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