Seismic classes O.P.C.M. 3274/2003

New seismic classification of Italian municipalities in 4 zones (1, 2, 3, 4). The municipalities in zone 1 and 2 correspond respectively to those with seismicity S=12 and S=9 (high seismicity). The remaining municipalities are classified in seismic zones 3 and 4意大利市镇的新型地震分类体系，共分为1、2、3、4四个地震区。其中1区和2区内的市镇分别对应地震活动性S=12与S=9的区域，均属于高地震活动性区域。剩余市镇则被划入地震区划3区和4区。