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1987年2月17日11时03分27秒,在江苏省射阳、大丰附近发生5.1级地震。据江苏省地震局测定:微观震中为北纬33°34.7′,东经120°32.1′,震源深度约15公里。经观场考察,宏观震中在射阳县、大丰县交界的中路港附近,与微观震中大致吻合。这次地震,江苏省盐城市、淮阴市、镇江市、南京市和连云港市等大部分市县有感。极震区烈度为Ⅵ度,面积约36平方公里,呈北东向张开的喇叭口,等震线向北西方向衰减较快,向南衰减较慢。
At 17:03:27 on February 17, 1987, a magnitude 5.1 earthquake hit Sheyang and Dafeng in Jiangsu Province. According to the determination of the Jiangsu Provincial Seismological Bureau, the micro epicenter is 33 ° 34.7 ’north latitude and 120 ° 32.1 east longitude with a focal depth of about 15 km. According to the field investigation, the macro epicenter near Zhonglugang at the junction of Sheyang County and Dafeng County roughly agrees with the micro epicenter. The earthquake, Yancheng City, Jiangsu Province, Huaiyin City, Zhenjiang City, Nanjing and Lianyungang City and most other cities feel. The seismic intensity is Ⅵ degree, with an area of 36 km2, flaring northeastward. The isoseismic decays rapidly to the northwest and slowly declines to the south.