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地震 ›› 2000, Vol. 20 ›› Issue (1): 32-38.

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C、D、值综合异常交汇区在华东地区中强地震前的中期异常

王睁睁1, 王炜2, 刘红桂1, 陈兴东1   

  1. 1.江苏省地震局,江苏南京210014;
    2.上海市地震局,上海200062
  • 收稿日期:1999-03-18 修回日期:1999-06-30 出版日期:2000-01-31 发布日期:2022-09-26
  • 作者简介:王玲玲(1948-),女,副研究员,主要从事地震学、地震预报等研究。
  • 基金资助:
    中国地震局“九五”科研攻关项目(95-04)部分成果

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

WANG Zheng-zheng1, WANG Wei2, LIU Hong-gui1, CHEN Xing-dong1   

  1. 1. Seismologieal Bureau of Jiangsu Provinee,Nanjing 210014,China;
    2. Seismologieal Bureau of Shanghai Munieipality,Shanghai 200062,China
  • Received:1999-03-18 Revised:1999-06-30 Online:2000-01-31 Published:2022-09-26

摘要: 从大震前中小地震活动有个增强的过程和大地震常常发生在异常区外围的现象出发,提出用描述地震分布时、空、强基本特点的空间集中度C、地震危险度D和地震强度因子进行交汇预测未来震中位置。应用在华东地区的震例-般预测位置可达1°~1.5°半径,并能较好地避免单值预报的虚报、漏报。

关键词: 地震集中度C, 地震危险度D, 地震强度因子, 综合异常区, 时空扫描

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 ) 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 , Synmaethetic anomalous area, Temporal and spatial seanning

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