1999年至2001年云南几次中强震前应力场方向动态变化及其预测意义
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摘要
利用小震综合节面解资料,分析研究了云南近期6次中强震前多分区、多时段应力场方向动态变化,并以多个震例表明,强震前应力场方向存在时空变化,对强震危险性预测具有指示意义。
Using the data of synthetic nodal plane solution of small earthquakes, we have analyzed and studied the dynamic variations of the stress orientations of multi sections and multi time segments before 6 mid-strong earthquakes occurred recently. It shows once again from the earthquake cases that there exist temporal and spatial variations to the orientations of the stress field before strong earthquake, which has directive significance to the forecast of strong earthquakes.
引文
[1] 王绍晋,秦嘉政,关雷,等.云南强震活动的多层次动力源分析[J].地震研究,2003,26(2) :142-150.
    [2] 王绍晋,阚荣举,胡克坚.云贵地区现代构造应力场空间分布与地震危险区划[A].见:云贵地区地震危险性研究文集[C].昆明:云南科技出版社,1989. 229-244.
    [3] 王绍晋,龙晓帆.强震危险区应力场环境动态分析与近期危险性预测[J].中国地震,1994(增刊):39-54.
    [4] 许忠淮,阎明,赵仲和.由多个小地震推断的华北地区构造应力场的方向[J].地震学报,1983,5(3) :268-279.

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