摘要
通过１９６５ 年以来云南省第Ⅲ、Ⅳ次强震活跃期间６－７ 级以上强震前一年云南地区ｂ 值全地域扫描图象的对比， 展示了丽江７ 级地震前高ｂ 值的动态演化过程， 并对照坚固体孕震模式和含硬包体试样在破裂孕育过程中声发射ｍ 值与杨氏模量Ｅ 的关系等实验结果， 以及高ｂ 值区和高波速区、余震区的关系， 均表明丽江地震的孕震区具备了坚固体孕震模式的高波速、高杨氏模量的特征。
It has shown the dynamic evolution process of high b value before the Lijiang M7 earthquake through the comparison of scanning patterns of b value one year before the M 6 7 earthquakes during the period of Ⅲ and Ⅳ since 1965. Comparing the test results between acoustic emission m value and Young′s modulus in the fracture process in the seismogenic modes of hard body and hard inclusion, considering the relations between high b value region and areas of high wave velocity and aftershocks, it is thought that there has a features of high wave velocity and high Yong′s modulus in seismogenic mode of hard body in the source area of Lijiang earthquake.
出处
《地震研究》
CSCD
北大核心
1999年第4期330-342,共13页
Journal of Seismological Research
基金
国家地震局地震科学联合基金
关键词
丽江地震
高b值
坚固体
孕震模式
地震前兆
Lijiang earthquake, high b value, seismogenic mode of hard body
