1981年11月9日凌晨2时1分,邢台地区又一次发生了较强烈地震,地震震级远台测定为六级,河北省省台测定为五点一级。震中位置在北纬37°30′,东经115°05′(宁晋县耿庄桥与隆尧县牛家桥之间)。震源深度约20公里。震中烈度为Ⅵ度。Ⅵ度区呈一长轴北北东向的椭圆形,长轴18公里,短轴7.5公里(图1)。这次地震的特点,一是震中区就在1966年3月8日六点八级地震和3月22日七点二级地震的极震区,表明这次地震是上次地震发震构造再次活动的结果。二是发震比较突然,震前无明显预兆,震后 At 2:11 AM on November 9, 1981, a relatively strong earthquake occurred again in the Xingtai area. The magnitude of the earthquake was measured at level six, and the province of Hebei Province was determined to be five points. The epicenter was located at 37°30′ north latitude and 115°05′ east longitude (between Niuzhuang Bridge, Ningjin County and Niujiaqiao, Longjiao County). The depth of the source is about 20 kilometers. The epicenter intensity is VI degrees. The VI degree zone is a long-axis north-northeast ellipse with a major axis of 18 km and a minor axis of 7.5 km (Figure 1). The characteristics of the earthquake are: the epicentral area of ​​the earthquake of magnitude 6.8 on March 8th, 1966 and the earthquake of 7:2 on March 22th, indicating that this earthquake was the last earthquake The result of the activity. The second is that the shock is more abrupt, there is no obvious omens before the earthquake, after the earthquake