| 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 |
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| 引用本文： | 谷永新,马志明,高福旺.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[J].地震,1999,19(2):209-213. |
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| 作者姓名： | 谷永新 马志明 高福旺 |
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| 作者单位： | 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 |
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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ＭＳ４．０地震前在震中周围出现一个直径约３５ｋｍ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。
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| 关 键 词： | 前兆异常 地震监测 台网密度 监测能力 |
STUDY ON THE CHARACTERISTICS OF PRECURSORY ANOMALIES BEFORE THE MS 4.0 SHUNYI EARTHQUAKE AND MONITORING ABILITY OF PRECURSOR OBSERVATIONAL NETWORK IN BEIJING AREA |
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| Gu Yongxin,Ma Zhiming,Gao Fuwang.STUDY ON THE CHARACTERISTICS OF PRECURSORY ANOMALIES BEFORE THE MS 4.0 SHUNYI EARTHQUAKE AND MONITORING ABILITY OF PRECURSOR OBSERVATIONAL NETWORK IN BEIJING AREA[J].Earthquake,1999,19(2):209-213. |
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| Authors: | Gu Yongxin Ma Zhiming Gao Fuwang |
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| Abstract: | In this paper, we have analyzed the numbers, the observation methods and the distribution of the precursory monitoring network in Beijing area. The density of the precursory monitoring network is calculated. We research the characteristics of precursory anomalies before the M S 4.0 Shunyi earthquake. The result shows that there is an anomaly concentrated area of 35 km around epicenter before the earthquake and most items of the anomalies 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 area. |
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| Keywords: | Characteristics Precursory anomaly Monitoring ability Observational network |
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