1983年11月7日凌晨5时9分49秒,在山东省菏泽市与东明县交界地带发生Ms5.9级地震,微观震中:N35°14′,E115°15′,震源深度约20公里。截至11日24时,共发生余震41次,其中≥3.0级的3次,≥2.0—2.9级的15次,≥1.0—1.9级的23次,而后逐渐衰减。本次地震,使震中区遭受不同程度的震害,局部发现喷砂、冒水、地裂缝等现象,少数房屋及围墙倒塌,很多民房受到破坏或损坏,并有人畜伤亡。但在党和政府的关怀下,伤病员得到及时治疗,受灾人民群众的生产、生活已得到妥善安排,恢复正常。此次地震有感范围很广,波及鲁、豫、晋、冀、鄂、皖、苏六省,有感面积达50万平方公里。据实地调查,靠近震区的黄河大 At 5:19:49 on November 7, 1983, an Ms5.9 earthquake occurred at the junction of Heze City and Dongming County in Shandong Province. The microseismic epicenter was N35 ° 14 ’and E115 ° 15’ with a focal depth of about 20 km. At 24 o’clock on the on the 11th, a total of 41 aftershocks occurred, of which ≥3.0 grade 3 times, ≥2.0-2.9 grade 15 times, ≥1.0-1.9 grade 23 times, and then gradually decayed. The earthquake hit the epicenter area with varying degrees of earthquake damage. Some of the phenomena such as sandblasting, draining of water and ground fissures were found. A few houses and walls collapsed. Many houses were damaged or damaged, and some people and livestock died. However, with the care of the party and the government, the sick and wounded have been treated promptly and the production and livelihood of the people affected have been properly arranged and returned to normal. The earthquake has a wide range of sensations and affects six provinces including Shandong, Henan, Shanxi, Hebei, Hubei, Anhui and Jiangsu provinces, with an estimated area of ​​500,000 square kilometers. According to the field survey, the Yellow River near the earthquake zone is big