| Quadrant characteristics of earthquake precursors and its theoretical analysis |
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| 作者姓名： | 宋治平 徐平 张洪魁 樊智勇 |
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| 作者单位： | SONG Zhi-ping ?XU Ping ? ZHANG Hong-kui FAN Zhi-yong Beijing Seismological Bureau，Beijing 100080，China |
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| 基金项目： | Beijing Natural Science Foundation (8992008) and Chinese Joint Seismological Science Foundation (198085). |
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| 摘 要： | IntroductionMigration and inhomogeneity are important two of the characteristics in the temporal-spatial distribution of earthquake precursors, which have been dealt with by MEI, et al (1993) comprehensively with their proposed explanation. The obvious quadrant feature in spatial distribution of earthquake precursors has been drawn with the explanation for its mechanism developed in some case studies in recent years. This paper deals mainly with the quadrant features derived from the analysis…
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| 收稿时间： | 13 March 2000 |
| 修稿时间： | 1 August 2000 |
Quadrant characteristics of earthquake precursors and its theoretical analysis |
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| SONG Zhi-ping,XU Ping,ZHANG Hong-kui,FAN Zhi-yong.Quadrant characteristics of earthquake precursors and its theoretical analysis[J].Acta Seismologica Sinica(English Edition),2001,14(1):58-65. |
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| Authors: | SONG Zhi-ping XU Ping ZHANG Hong-kui FAN Zhi-yong |
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| Institution: | Beijing Seismological Bureau, |
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| Abstract: | On the basis of quadrant features of the precursors in geo-electricity and deformation in the case of Tangshan earthquake and Datong earthquake in North China, the same feature of geo-electricity and deformation precursors before the Zhangbei earthquake has also been found. It seems that the existence of the quadrant behavior is not accidental, which might be related to existence of the earthquake generations. It is known in terms of rock experiment and theoretical analysis that there exists actually quadrant feature in earthquake-generating process with the range of quadrant spatial distribution unfixed, showing features of (gradual increasing ? maximum ? lessening slightly(, showing that the increasing zone and the decreasing one (or compressing zone and expanding one) of the quadrant in the near-source region could be different from that in the far-source region. Based on the knowledge of quadrant characters of earthquake precursors, we analyze space distributions of different types of precursor anomalies which may be a useful reference for one to predict the location of a strong earthquake occurrence. |
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| Keywords: | quadrant of precursors quadrant characteristics rheologic inclusion theory |
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