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地震 ›› 2008, Vol. 28 ›› Issue (2): 123-130.

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云南地区水位动态图像的前兆异常特征

张立1, 赵洪声1, 刘耀炜2   

  1. 1.云南省地震局, 云南 昆明 650224;
    2.中国地震局地壳应力研究所, 北京 10085
  • 收稿日期:2007-09-26 修回日期:2007-11-15 出版日期:2008-04-30 发布日期:2021-10-29
  • 作者简介:张立(1963-), 女, 四川南充人, 高级工程师, 主要从事地下流体、 地震预报等研究。
  • 基金资助:
    “十一五”国家科技攻关项目(2006BAC01B02-03-01)

Precursor anomaly feature of dynamic pattern of groundwater level in Yunnan area

ZHANG Li1, ZHAO Hong-sheng1, LIU Yao-wei2   

  1. 1. Earthquake Administration of Yunnan Province, Kunming 650224;
    2. Institute of Crustal Dynamics, CEA, Beijing 100085, China
  • Received:2007-09-26 Revised:2007-11-15 Online:2008-04-30 Published:2021-10-29

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摘要： 利用云南地区多年的水位资料, 使用水位年变化率动态图像方法进行分析, 结果表明: ① 云南地区水位的年变化幅度似与未来地震强度有一定正比关系, 特别当某年水位最大变化率上升幅度大于0.35或下降幅度大于-0.35时, 次年往往会发生MS≥6强震; ② 水位异常对应地震有区域性特征, 滇西北至滇东北地区以水位上升对应地震为主, 滇西南和滇西以水位下降对应地震为主; ③ 2000年以来云南绝大部分MS≥5地震的发震地点都位于前一年水位上升(或下降)极值区或次极值区附近水位梯度较大的地带上。

关键词: 水位变化率, 动态图像, 异常特征, 云南地区

Abstract: By using the analytical method of the dynamic pattern of groundwater level and using many years' groundwater level data in Yunnan area, the result show that: ① There is a certain proportional relation between annual variation amplitude of Yunnan area groundwater level and intensity of future earthquakes, especially when maximum variation proportion of groundwater level in some year up and down amplitude ＞0.35 or ＞-0.35, the second year will have MS≥6 intensity earthquakes; ② Groundwater level anomalies corresponding to earthquakes show regional characteristics. The water level corresponds to earthquakes in northeast and northwest Yunnan area is mainly going up, but southwest and west Yunnan area is going down; ③ Since 2000 year, most MS≥5 earthquakes in Yunnan area take place in groundwater level great gradient belt near extremum area or secondary extremum area of previous year groundwater level up and down.

Key words: Variation proportion of groundwater level, Dynamic pattern, Characteristics of anomaly, Yunnan area

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