In this paper, the seismic activity of Jiangsu, Shandong, Anhui, Henan border area has been studied. We emphasize that Ms 3 seismic gap about 230 km long axis appear in this area from October 2006 to October 2010. It is put forward in this paper that the seismic gap and the surrounding area exist a number of medium-term anomalies, that is, Ms≥ 3 earthquake activities with high frequency, high energy, the relative concentration of moderate earthquake epicenter in the spatial distribution and low b value and so on. Then the conclusion being drown here is that the number of medium-term anomalies in the Anhui, Henan border area does not match Taikang Ms 4. 7 earthquake strength, so this region exist risk of moderately strong earthquake.%对苏、鲁、皖、豫交界地区地震活动进行研究,指出该区2006年10月-2010年10月出现一个长轴约230 km的3级地震空区.该空区及附近地区存在多项中期异常,即ML≥3地震活动具有频度高、能量强,中等地震震中空间分布相对集中及低b值等.讨论认为,苏、鲁、皖、豫交界地区存在多项中期异常,与2004年10月24日太康4.7级地震的强度不匹配,未来具有发生中强以上地震的危险.
展开▼
