4月20日，四川地震局工程研究院院长周荣军接表示，雅安7级地震为独立地震，不是“5.12汶川地震余震。
In April 20th, Sichuan Earthquake Engineering Research Institute president Zhou Rongjun said, Ya'an earthquake of magnitude 7 earthquake is independent, not the "5.12 Wenchuan earthquake" aftershocks.
他表示，“5.12汶川地震震中位于龙门山断裂带中北段，而此次地震在该断裂带南西段，两地距离远，可以判定，此次地震不是“5.12汶川地震余震。
He said, "with the north section of Longmen Mountain Fault of Wenchuan earthquake epicenter was located 5.12", and the seismic belt Nancy section in the fracture, the two distance, can be determined, the earthquake is not the "5.12 Wenchuan earthquake" aftershocks.
此外，地震局专家说，90年代后龙门山断裂带就处于4级以上空白期，这次地震处于龙门山断裂带最南端，有地下水报告异常;本次地震比汶川还要复杂，目前无法确定地震类型及是单层还是双层断裂。
In addition, Seismological Bureau experts said, after 90 years of Longmen mountain fault zone is in more than 4 blank period, the earthquake in the southern tip of the Longmen Mountain Fault Zone, groundwater report abnormal; the earthquake is more complex than in Wenchuan, at present can not determine the type of earthquake and is single or double layer fracture.
据了解，7.0级震级是雅安历史上最大的地震。本次地震不是汶川的余震。
It is understood, 7 magnitude is the biggest earthquake in the history of Ya'an. This earthquake is not Wenchuan aftershocks.