Nelson, P. Ward, and the author, the earthquakes recorded by the Beijing Seismic Network from Jan. 1, 1979 through June 30, 1980 are relocated and the results are compared with the earlier reported ones.

• Nelson、P.；Ward 和本文作者新发展的区域台网地震定位程序HYPO81对北京台网1979年1月1日至1980年6月30日记录的地震作了重新定位处理；并与原台网测定结果进行了比较