Abstract: This paper discusses the existence of the NW-trending Heze-Kunshan seismic zone and its scale and extent from the data of geological structure,strike of the dense seismic focuses area and migration law of earthquakes in combination with the data of gravity and aeromagnetism. This seismic zone is active from historic to recent times,It has become a threat of seismic hazard to the production and constrution in a vast area from the Huaihe River to the Yangtze River, including Shanghai city,Hangzhou Bay and Ningbo area. This should draw the attention of the relevant departments concerned on the purpose to further seismlolgical study and monitoring.

Key words: seismogenic zone, Left-lateral strike-slip fault, Reverse strike-slip fault, Jiangsu, Shandong

摘要： 根据地质构造、地震稠密区走向和地震迁移活动的规律,并结合重力和航磁资料探讨了菏冷昆山北西向地震带的存在及其规模和范围。这一地震带,无论在历史上或近期均甚活跃,对江淮流域及沪、杭、甬地区构成一定的震灾威胁,值得引起有关方面的重视,并予加强研究和监测。

关键词: 地震构造带, 走滑活动断裂, 逆走滑活动断裂, 江苏, 山东