天津市宁河地区自1976年唐山7.8级地震后,发生多次五级以上地震,这些地震的震源位置虽经许多单位测定,但结果相差甚远。本文据天津地震台网和唐山部分台站的资料,用多种方法,对震源位置作了重新测定,并据修订后的震源位置和京津唐地区的地壳速度,对一些地震的震源机制作了补充。 After the M = 7.8 Tangshan earthquake in 1976, more than five earthquakes occurred in the Ninghe area of ​​Tianjin. Although the location of the hypocenter of these earthquakes has been determined by many units, the results are far from satisfactory. Based on the data of Tianjin Seismic Network and some stations in Tangshan, this paper re-measured the location of the hypocenter by a variety of methods. Based on the revised hypocenter and the crustal velocity in the Beijing-Tianjin-Tangshan area, some focal mechanisms of earthquakes Added.