C、D、Mƒ值综合异常交汇区在华东地区中强地震前的中期异常

Abstract

Abstract: The phenomena show that the aetivities of moderate and small earthquake usually indieate a strengthening process prior to large earthquakes and that large earthquakes often occur in the periphery of the anomalous zone.The intersection area of anomalous zones of the parameters deseribing the charaeteristics of the temporal,spatial and intensity distributions of earthquakes (the spatial concentration degreeC,the seismic risk degreeD and the seismic intensity faetor Mƒ) could be used to predict the epicentral loeation of the earthquake.The applieation of the method to the earthquake predietion in East China region has shown that the accuraey of the estimated epieentral loeation might reaeh 1°～1.5°(radius),and false alarms and missed predietion of earthquakes resulted from using only single parameter can be avolded effieiently.

Key words: Seismice concentration degreeC, Seismiec risk degree D, seismic intenslty factor Mƒ, Synmaethetic anomalous area, Temporal and spatial seanning

CLC Number:

WANG Zheng-zheng, WANG Wei, LIU Hong-gui, CHEN Xing-dong. Interseetion area of synthetic anomalies of C,D and Mƒ values——a middle-term anomaly Prior to moderately Strong earthquakes in East China region[J]. EARTHQUAKE, 2000, 20(1): 32-38.

References

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Interseetion area of synthetic anomalies of C,D and Mƒ values——a middle-term anomaly Prior to moderately Strong earthquakes in East China region

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