云南近期姚安、澄江及丘北地震的孕育

从地震学的角度对姚安、澄江和丘北地震的孕育进行追踪研究，结果表明：云南地区3个月时间内发生多次中强震，震前云南省地震学的波速比，小震调制比以及震源深度等多项参数出现了中期同步异常，并且有区域性中小地震活跃，能量的加速一平静过程以及前兆震群出现等明显的近场异常，表明云南地区快速发生的多次中强地震，在地震学方面出现明显的中短期异常的孕震特征。

Preparation of Recent Yaoan,Chengjiang and Qiubei Earthquakes in Yunnan

Tracing study on preparation of the Yaoan,Chengjiang and Qiubei earthquakes is made from the point of view of seismology.The results show that medium-strong earthquakes occurred many times in Yunnan in three months;medium-term synchronous anomalies of seismic parameters including Vp/Vs ratio,modulating ratio of small earthquakes and focal depth as well as near-field anomalies such as activation of local medium-small earthquakes,acceleration-quiet process and precursor earthquake swarm appeared before the earthquakes in Yunnan,which manifests seismogenic features of medium-short term anomalies in seismology before many medium-strong earthquakes in Yunnan.