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地震 ›› 2016, Vol. 36 ›› Issue (4): 109-119.

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川滇地区强震前流体异常特征与预测指标体系初探

王俊1, 邵志刚2, 孙小龙3, 王熠熙4, 向阳5, 王喜龙6   

  1. 1.安徽省地震局, 安徽 合肥 230031;
    2.中国地震局地震预测研究所, 北京 100036;
    3.中国地震局地壳应力研究所, 北京 100085;
    4.天津市地震局, 天津 300201;
    5.新疆维吾尔自治区地震局, 新疆 乌鲁木齐 830011;
    6.辽宁省地震局, 辽宁 沈阳 110034
  • 收稿日期:2015-12-29 发布日期:2020-07-03
  • 作者简介:王俊(1984-), 男, 安徽枞阳人, 工程师, 主要从事地震地下流体研究。
  • 基金资助:
    中国地震局震情跟踪课题(2016010309)资助

A Prerliminary Study of Subsurface Fluid Precursors and Prediction Index before Strong Earthquakesin Sichuan-Yunnan region

WANG Jun1, SHAO Zhi-gang2, SUN Xiao-long3, WANG Yi-xi4, XIANG yang5, WANG Xi-long6   

  1. 1. Earthquake Administration of Anhui Province, Hefei 230031, China;
    2. Institute of Earthquake Science,CEA, Beijing 100036, China;
    3. Institute of Crustal Dynamics, CEA, Beijing 100085, China;
    4. Earthquake Administration of Tianjin Municipal City,Tianjin 300201, China;
    5. EarquakeAdministration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China;
    6. Earthquake Administration of Liaoning Province, Shenyang 110034, China
  • Received:2015-12-29 Published:2020-07-03

摘要: 为进一步跟踪川滇地区未来1~3 a的7级震情, 基于《中国震例》(1966—2012年)系统分析了川滇地区强震(MS≥6.0)前地下流体前兆异常特征, 并结合相关研究成果, 深入分析了该地区前兆信息特征, 结果表明, 该地区强震前地下流体异常具有长趋势变化特征, 且震级越大趋势性越显著, 空间上由外围沿构造带逐渐向震区收缩; 水氡、 水位异常具有时间上的配套性、 月频次加速性及空间上的群体性与分化迁移等特征。 通过拟合发现, 震级与异常数量之间存在指数关系, 并据此尝试给出了川滇地区流体异常预测指标, 希翼为今后该地区未来强震预测预报提供一定的科学依据。

关键词: 流体异常, 指标体系, 地震预测, 川滇地区

Abstract: In order to monitor situations of MS≥7.0 earthquakes in Sichuan-Yunnan region in the next few years,we systematically analyzed underground fluid precursory anomaly characteristics before MS≥6.0 earthquakes in Sichuan-Yunnan region from 1976 to 2012 from Earthquake Cases In China. Meanwhile,these cases are analyzed by using the research results regarding information characteristics of ground fluid precursors in the Key Projects of the Eleventh Five Year Plan. And then, in-depth analyses of characteristics of the precursory information in the region are also carried out. The results show that there exist some accelerations, coordination of time and space on the mass and other characteristics before strong earthquakes in this area. At last, we have tried to give its adjacent region and summarized the prediction index,and we hope that can provide some statistical bases for earthquake prediction in the future.

Key words: Fluid anomaly, Prediction index, Earthquake prediction, The Sichuan-Yunnan region

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