摘要
以嘉峪关台的原始资料为依据 ,着重探讨了肃南 5.3级地震前祁连山西段的地震活动性异常。将本台的地磁Z分量与兰州、天水地磁台进行比较 ,结果认为 :肃南 5 3级地震的发生基本符合祁连山西段地震活动的周期性特征 ,前兆资料无明显的临震异常显示 ,但本台的自然电场、地磁日幅差和Z分量的日均值资料有明显的短期趋势性异常显示。
Seismic anomalies of western Mt.Qilian before southern Gansu earthquake with Ms5.3 are discussed on the base of the data recorded by Jiayuguan station.Compared geomagnetic Z component at Jiayuguan,Lanzhou and Tianshui stations,the results show:the characteristics of the event are agreed with the seismicity period in western Mt.Qianlian,impending anomalies are not sensible,but the natural electric field,geomagnetic daily value and Z component are sensible in short period.
出处
《高原地震》
2001年第3期35-39,共5页
Plateau Earthquake Research
