嘉峪关南5．4级地震的断层气体前兆研究
|
摘要
本文对嘉峪关南５．４级地震前嘉峪关观测点观测的断层气组分氡、汞、氢的异常进行了分析研究，并通过与跨断层水准测量及地震活动性的对比分析，证实了上述异常确系５．４级地震的前兆反映。本文还对该观测点的地质构造特征进行了研究，认为其所处的构造部位对多方式力源有敏感性。
In this paper,we introduced the anomalies of fault-gases Rn,Hg and H_2 at Jiayuguan station be-fore the south Jiayuguan M5.4 earthquake. By comparing with the seismicity and leveling surveyacross the faults,it is shown that the anomalies are indeed the precursor of this earthquake. By study-ing the features of geological structures at the observation point,it is considered that Jiayuguan fault-gases correspond well to many earthquake because the point is situated in the position where the struc-tures are sensitive to multi-way force sources.
In this paper,we introduced the anomalies of fault-gases Rn,Hg and H_2 at Jiayuguan station be-fore the south Jiayuguan M5.4 earthquake. By comparing with the seismicity and leveling surveyacross the faults,it is shown that the anomalies are indeed the precursor of this earthquake. By study-ing the features of geological structures at the observation point,it is considered that Jiayuguan fault-gases correspond well to many earthquake because the point is situated in the position where the struc-tures are sensitive to multi-way force sources.
引文
1毛可，等．1992年元月12日嘉峪关5．4级地震的前兆异常及短临预报．西北地震学报，1993，15（1）．2何跟巧，常秋君，等．茫崖和共和地震与断层气体异常．内陆地震，1990，4（4）．3何跟巧，常秋君，等．甘肃景泰6．2级地震的断层气体前兆研究．西北地震学报，1992，14（增刊）．4何跟巧，等．阿尔金断裂微量气体分布与断层现今活动性研究．西北地震学报，1989，11（1）．5张炜，等．水文地球化学预报地震的原理与方法．北京：教育科学出版社，1988．
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