| Development and application of the mo-ment-ratio imaging algorithm |
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| 作者姓名： | 黄建平 马丽 张晁军 |
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| 作者单位： | Institute of Earthquake Sciences China Earthquake Administration，Graduate University of Chinese Academy of Sciences，Beijing 100049，China，Institute of Earthquake Sciences，China Earthquake Administration，Institute of Earthquake Sciences，China Earthquake Administration，Graduate University of Chinese Academy of Sciences，Beijing 100049，China，Beijing 100036，China，Beijing 100036，China，Beijing 100036，China |
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| 基金项目： | National Natural Science Foundation of China (40574020 and 10371012). |
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| 摘 要： | Introduction After an earthquake occurs, the regional stress field will be adjusted, the stress state in the epicenter area is relatively weak and the loaded stress at the crustal medium in the surrounding area will relatively increase due to the energy release of the crustal rupture. When several small and medium earthquakes occur, one or several new stress-concentrated areas will appear due to the effect of every event. The comprehensive effect could be related to the time, space and magni-t…
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Development and application of the moment-ratio imaging algorithm |
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| HUANG Jian-ping,MA Li,ZHANG Chao-jun.Development and application of the mo-ment-ratio imaging algorithm[J].Acta Seismologica Sinica(English Edition),2006,19(5). |
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| Authors: | HUANG Jian-ping MA Li ZHANG Chao-jun |
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| Abstract: | In the moment-ratio imaging algorithm, which is based on the theory of healing of a wound, the energy of each strong earthquake is distributed around the epicenter according to certain rules, and the features of the Moment-ratio valueh are analyzed as the space and time change, so that the relationships between the moment-ration value R and strong earthquakes can be found. In the present paper, regions divided, hypocenter depths and events completed magnitude analyses were carried out in the Chinese catalogue. By applying the moment-ratio imaging algorithm in which the parameters are adjusted, the processes of anomaly evolution which correspond to the epicenter and the surrounding value R before earthquakes of M≥7.0 since 1966 in different areas of China were analyzed. It was found that the range area and imminent time of a coming earthquake could be confirmed quantitatively by analyzing the abnormal temporal and spatial variation of the value R. The results showed that the temporal and spatial variation of the value R could quantitatively reflect the temporal and spatial factors of a coming strong earthquake as well as the rule of medium rupture. |
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| Keywords: | moment-ratio imaging algorithm healing quantitative analysis China strong earthquakes |
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