文档介绍：第16卷第1期 震灾防御技术 littoral fault zone and around the adjacent sea
area. There are four reflection interfaces were identified from the seismic reflection profiles. The Quaternary stratigraphy in the study
area was divided into four seismic sequences corresponding to four geological periods, as Holocene, Late Pleistocene, Middle Pleisto­
cene and Early Pleistocene. According to the regional geological structure, the fracture points Fl, F2, F3, F4 and F& F9 and F10 corres­
pond to the northern littoral fault zone in the study are, and the latest strata of fault movements are in the Late Pleistocene. Therefore, it
can be inferred that the northern segment of the littoral fault zone is of Late Pleistocene activity at Northern Jiangsu region.
Key words: Mini-multichannel seismic survey; Littoral fault zone; Fault activity
引言
苏北一滨海断裂位于南黄海滨海向苏北陆区过渡地区，是中国东部沿海重要断裂(许兵等， 1984； 田建
明等，2004； 王斌等，200&李旭东等，2018； 王恩惠等，2020),如图1所示。断裂整体走向北西，根据
几何展布，可分为北段、中段和南段。沿断裂带及附近地区发生过十余次破坏性地震，其中最大地震为
1基金项目 国家重点研发计划(2017YFC1500401)
［收稿日期］2020-12-18
［作者简介］朱孟浩，男，生于1997年。硕士研究生。主要从事构造地貌与活动构造方向的研究。E-mail： ******@1