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地震 ›› 1998, Vol. 18 ›› Issue (4): 391-398.

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首都圈地区气体地球化学指标区域特征初步研究①

魏家珍1), 杨玉荣2), 申春生1), 宇文欣1), 范思源3)   

  1. 1)中国北京 100036 中国地震局分析预报中心;
    2)中国北京 100045 中国地震局数据信息中心;
    3)中国北京 100039 北京市地震局
  • 收稿日期:1998-02-18 修回日期:1998-04-28 发布日期:2022-09-23
  • 作者简介:魏家珍,女,1945年10月出生,高级工程师,主要从事地震流体化学短临预报新方法研究及地震监测预报业务管理工作。

PRELIMINARY RESEARCH ON THE REGIONAL CHARACTERISTICS OF GAS GEOCHEMISTRY INDEXES IN CAPITAL CIRCLE REGION

Wei Jiazhen1), Yang Yurong2), Shen Chunshen1), Yu Wenxin1), Fan Styuan3)   

  1. 1)Center for Analysis and Prediction, CSB, Beijing 100036, China;
    2)Data and Information Center, CSB, Beijing 100045, China;
    3)Seismological Bureau of Beijing Municipality, Beijing 100039, China
  • Received:1998-02-18 Revised:1998-04-28 Published:2022-09-23

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摘要： 首都圈地震重点监视区是我国地震重点防御区和地震监视预报研究的重要试验区,区内布有流体化学测点35个,开展的多项地震流体地球化学研究已取得丰硕的成果,为地震预报研究作出了重要的贡献。笔者对部分流体地球化学组分的区域特征进行了初步分析,结果表明氡、汞、氢等组分具有较好的映震效能,它们在正常状态下,普遍具有低背景值且变化幅度不大的共性,而当地震活跃时,大部分测点的上述组分的含量均出现增髙现象,成为地震短期预报的依据之一。

关键词: 地震预报, 气体地球化学, 区域特征, 首都圈

Abstract: The capital circle region is one of the special areas for monitoring seismicity and prevention of seismic disaster in China, and is an important test area for earthquake monitoring and prediction study, where a lot of seismic fluid geochemistry researches have been done and plentiful results have been gained. This work has made an important contribution to earthquake prediction research. The authors studied the regional features of some geochemical components. The results show that under normal condition, the background values of radon, mercury and hydrogen in ground water are lower and the variation amplitudes are relatively small, while the measured values of the components at most stations become higher when seismicity is active in the region. This can be used as an index for short-term earthquake prediction.

Key words: Earthquake prediction, Capital circle region, Gas geochemistry, Regional characteristics