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地震 ›› 2018, Vol. 38 ›› Issue (4): 142-150.

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大同窗异常判定及预测效能初步分析

李丽1,2, 王霞1, 2, 宋美琴1,2, 吴昊昱1,2, 梁艳1,2   

  1. 1.山西省地震局, 山西 太原 030021;
    2.太原大陆裂谷动力学国家野外科学观测研究站, 山西 太原 030025
  • 收稿日期:2017-02-16 发布日期:2019-08-15
  • 作者简介:李丽(1981-),女,河北邯郸人,工程师,主要从事地震活动性和数字地震学相关工作研究。
  • 基金资助:
    震情跟踪定向工作任务(2016010106, 2017010112)资助

Earthquake Prediction Effectiveness based on Anomaly Judgement of Datong Window

LI Li1,2, WANG Xia1,2, SONG Mei-qin1,2, WU Hao-yu1,2, LIANG Yan1,2   

  1. 1.Earthquake Administration of Shanxi Province, Shanxi Taiyuan 030021, China;
    2.National Continental Rift Valley Dynamics Observatory, Shanxi 030025, China
  • Received:2017-02-16 Published:2019-08-15

摘要: 采用统计学方法系统分析了1990年以来大同窗微震活动与山西带ML≥4.0地震和晋冀蒙交界、 张渤带M≥5.0地震的对应关系, 并利用Molchan图表法和R值评分法对开窗指标进行预报效能统计学检验研究。 结果表明: 大同窗异常活动对未来地震的时间指示意义较强, 可以作为判定山西带ML≥4.0地震和晋冀蒙交界、 张渤带M≥5.0地震的短临预测指标; 但是大同窗小震活动频次和强度与未来地震强度关系并不显著, 需要综合区域地震活动背景和其他测震学指标及前兆异常综合判断。

关键词: 大同窗, 山西地震带, 地震预测指标, 预测效能检验

Abstract: In this paper, the correspondence between the small earthquakes in Datong, the ML≥4.0 earthquakes in Shanxi and the M≥5.0 earthquakes in the Zhangjiakou—Bohai tectonic zone of Shanxi—Hebei—Inner Mongolia boundary area since 1990 were analyzed statistically. The window indicators were used to test the validity of forecasting function by Molchan chart and R value score methods. The results show that the anomalous activity of Datong is of great significance to the future earthquakes, and it can be used as the short-term and temporary prediction index for the earthquakes with M4.0 in Shanxi and M≥5.0 in the Zhangjiakou-Bohai tectonic zone of Shanxi—Hebei—Inner Mongolia boundary area. The relationship between frequency, intensity and future earthquake intensity is not obvious, so the judgment should be made by synthesizing regional seismicity background, seismological indexes and precursory anomalies.

Key words: Earthquake prediction index, Prediction efficiency test, Datong window, Shanxi earthquake zone

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