Abstract: A magnitude 7(3/4) earthquake happened in Linfen, Shanxi, on May 18, 1965(the 34th year of Qing Emperor Kangxi). In the Catalogue of Chinese Historical Strong Earthquakes, the epicenter of this earthquake is located at the northwest of Zhangli Village of Xiangfen County and Dongkang Village of Yaodu District, Linfen City(36.0°N, 111.5°E), and the epicentral intensity is Ⅹ. It was inferred by previous studies that Guojiazhuang Fault is the seismogenic structure of the earthquake. In this paper, in cooperation with the Archives of Linfen City and Earthquake Administration of Linfen, the author looked up in details the first-hand materials of the earthquake damage to the ancient town of Linfen and its surrounding areas, and based on this, drew the isoseismals of the earthquake. Through discussions with relevant experts, we consider that it would be more appropriate that the location of the macroscopic epicenter of this earthquake is in Donguan area of the ancient town of Linfen, the epicentral intensity is Ⅺ, and the major axis of the isoseismals is in NWW. Later, in the implementation of "Linfen city active fault detection and seismic risk evaluation", we found two earthquake fault outcrops near the macroscopic epicentral area of the 1695 Linfen earthquake. Shallow seismic exploration lines and drill rows perpendicular to the strike of the fault outcrops were arranged to implement the exploration. The results demonstrate that the right-lateral stepover composed of Guojiazhuang Fault and Liucun Fault, together with the Luoyunshan Fault(Longci segment), were involved in the 1695 Linfen earthquake, the intersection of the faults is the microscopic epicenter of the earthquake, and the above-mentioned three faults are the seismogenic structure of the earthquake. In addition, the seismic geological remains in this region(landslides, earthquake ground cracks, sand emitting channels, etc.) are mainly distributed on the hanging wall of the Guojiazhuang Fault, this proves from another perspective that the earthquake remains is the product of activity of Guojiazhuang Fault in 1695.

Key words: Linfen earthquake in 1695, historical earthquake materials, Guojiazhuang Fault, earthquake remains

摘要： 1695年5月18日（清·康熙三十四年四月初六）戌时山西临汾发生大地震。《中国历史强震目录》（1995）确定其震中位于36.0°N，111.5°E，震中位于今襄汾县张礼村和临汾尧都区东亢村之间偏北处，震中烈度为Ⅹ度。综合前人对该地震的研究，推测其发震构造可能为郭家庄断层。在临汾市档案馆、临汾市地震局等配合下，详细查阅了临汾古城及其周围地区在此次地震中受损情况的第一手资料，并在此基础上勾绘了1695年临汾大地震等震线图。经相关专家论证，认为"1695年临汾大地震宏观震中定在临汾市老城东关一带、震中烈度调整为Ⅺ度、等震线长轴方向为NWW向"更为合理。后在执行"临汾市活断层探测和地震危险性评价"项目过程中，在上述临汾大地震宏观震中区附近发现地震断层露头，在垂直该露头断层走向布设浅层地震测线和排钻施工，结果发现，郭家庄断层、刘村断层组成的右列阶区和罗云山断层（龙祠段）共同参与了1695年临汾大地震，其交叉部位应为此次地震的微观震中，基本可以认定这3条断裂为此次地震的发震构造。另外，该地区的地震地质遗迹（滑坡、地震地裂、喷砂管等）主要分布于郭家庄断裂上盘，从侧面证明该地震遗迹是郭家庄断裂1695年"活动"的产物。

关键词: 1695年临汾大地震, 历史地震史料, 郭家庄断裂, 地震遗迹