总磁场强度的空间相关及北黄海M_L5.0级地震异常
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
清理攻关后,虽然相关系数法被列为地磁学科预报地震的方法之一,但应用性较差,且震例不多。为了探讨该种方法预报地震的效果,本文对辽宁地区总磁场强度进行了空间相关分析,并对1993年12月31日北黄海M_L5.0级地震前的相关系数变化加以研究。结果表明,震前异常明显,属于中短期变化,而不是通常认为的短临异常。
The correlation coefficient method is still taken as the one of methods for geomagnetic anomaly to predict earthquake during 8th five-Year Plan, but its effectiveness is not good and actual examples are not many.In order to research effect for the method to predict earthquake, we make spatial correlation analysis in the case of total intensity of geomagnetic field in Liaoning area, and research correlation coefficient variation before North Yellow Sea earthquake, M_L = 5.0, on Dec. 31, 1993. The results show that preseismic anomaly is obvious and belong to mid and short range variation.
引文
1徐文耀.局部地磁场内外源部分与分离.国际地震动态文集之三,1986
    2朱兆才。空间相关性分析在地磁观测研究中的应用。地震地磁观测与研究,1989,10(5)
    3毛桐恩.中国震磁效应观测研究。国际地震动态文集之三,1986
    4赵善宏.南黄海6.2级地震前地磁总强度异常,地震, 1986(3)
    5中国科学院数学所数理统计组。回归分析法。北京:科学出版社,1973
    6姚法章。订正法在地磁绝对观测中的应用。地震地磁观测与研究,1988(6)

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心