区域小震平均节面解的时空分析
TEMPORAL AND SPATIAL ANALYSIS OF REGIONAL COMP-OSITE FAULT PLANE SOLUTIONS FOR SMALL EARTHQUAKES
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摘要: 本文提出了根据所研究地区地质构造特点划分小区求小震平均节面解的方法,并以晋、冀、蒙三省交界地区为例,得到107个小震平均节面解.分析了它们在唐山大震前后参数变化的时空特征,取得了一些有意义的结果.Abstract: A method is proposed in this paper for the analysis of temporal and spatial characteristics of composite fault plane solutions for small earthquakes. With this method, an interesting region is divided into small areas according to the geological features of the region. As an example, 107 composite fault plane solutions are calculated for the adjoining region of Shanxi, Hebei and Nei Monggol- The temporal and spatial characteristics of the variations of the solution parameters before and after the great Tangshan earthquake of July 28, 1976, have been analysed and some interesting results obtained.
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[1] 阎明、赵仲和,19a9,店山强震前后京、津、唐、张地区小震初动符号的时空分析.地震监测与预报方法清理成果汇编,测震学分册,256——264.地震出版社,北京.
[2] 许忠淮、阎明、赵仲和,1983.由多个小地震推断的华北地区构造应力场的方向.地震学报,5,268——279,
[3] 许忠淮、刘玉芬、张郑珍,1979.京、津、唐、张地区地震应力场的方向特征.地震学报,1,121——132,
[4] 成尔林、李桂芳、陈和川,1982. 1976年四川省松播一平武7.2级地震前后主压应力轴的方向特征.地震学报,4,136——14a,
[5] 张之立、李钦祖、谷继成、靳雅敏、杨憋源、刘万琴,1980,唐山地震的破裂过程及其力学分析.地震学报,2,111——129.
[6] Mendiguren. J. A., 1990. A Procedure to resolve areas of different source mechanism when using the method of composite nodalplane solution. Bull. Seism. Soc. Amer, 70, 4, 985——998.[1] 阎明、赵仲和,19a9,店山强震前后京、津、唐、张地区小震初动符号的时空分析.地震监测与预报方法清理成果汇编,测震学分册,256——264.地震出版社,北京.
[2] 许忠淮、阎明、赵仲和,1983.由多个小地震推断的华北地区构造应力场的方向.地震学报,5,268——279,
[3] 许忠淮、刘玉芬、张郑珍,1979.京、津、唐、张地区地震应力场的方向特征.地震学报,1,121——132,
[4] 成尔林、李桂芳、陈和川,1982. 1976年四川省松播一平武7.2级地震前后主压应力轴的方向特征.地震学报,4,136——14a,
[5] 张之立、李钦祖、谷继成、靳雅敏、杨憋源、刘万琴,1980,唐山地震的破裂过程及其力学分析.地震学报,2,111——129.
[6] Mendiguren. J. A., 1990. A Procedure to resolve areas of different source mechanism when using the method of composite nodalplane solution. Bull. Seism. Soc. Amer, 70, 4, 985——998.
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