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地震 ›› 1999, Vol. 19 ›› Issue (2): 209-213.

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顺义4. 0级地震前兆异常特征与京区前兆监测网监测能力探讨①

谷永新1), 马志明1), 高福旺2)   

  1. 1)中国北京 100083 北京市地震局;
    2)中国北京 100036 中国地震局分析预报中心
  • 收稿日期:1998-06-26 修回日期:1998-07-01 出版日期:1999-04-30 发布日期:2022-09-19
  • 作者简介:谷永新,男, 1965年7月出生,副研究员,主要从事地震监测及地震预报研究工作。

STUDY ON THE CHARACTERISTICS OF PRECURSORY ANOMALIES BEFORE THE MS 4. 0 SHUNYI EARTHQU-AKE AND MON ITORING ABILITY OF PRECURSOR OBSERVATIONAL NETWORK IN BEIJING AREA

Gu Yongxin1), Ma Zhiming1), Gao Fuwang2)   

  1. 1)Seismological Bureau of Beijing Municipality, Beijing 100083, China;
    2)Center for Analysis and Prediction, CSB, Beijing 100036, China
  • Received:1998-06-26 Revised:1998-07-01 Online:1999-04-30 Published:2022-09-19

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摘要： 通过对北京地区现有定点地震前兆监测网进行清理,分析了现有定点专业前兆监测台站、观测点、群测点的数量及分布密度的现状。对 1996年 12月 16日北京顺义 MS4. 0地震的短临异常特征进行了探讨,表明顺义 MS 4. 0地震前在震中周围出现一个直径约 35 km 的短临异常密集区域。从异常形态看,该区域中的异常大部分可能带有来自震源的信息。结合顺义地震短临异常点位分布特征,对北京地区前兆台网的密度问题进行了探讨。

关键词: 前兆异常, 地震监测, 台网密度, 监测能力

Abstract: In this paper, we have analyzed the numbers, the observation methods and the distri-bution of the precursory monitoring network in Beijing a rea. The density of the precursory monito ring network is calculated. We research the characteristics of precursory anomalies befo re the MS 4. 0 Shunyi earthquake. The result shows that there is an anomaly-concen-trated a rea of 35 km around epicenter before the earthquake and most items of the anoma-lies in this area might contain the messages from the source. To the end, we also discuss the monitoring ability of the observational network for earthquake precursors in Beijing a rea.

Key words: Characteristics, Precursory anomaly, Monitoring ability, Observational network