1842年6月11日新疆巴里坤县发生了一次7.5级大震,造成了明显的地表形变,产生了长达23公里的地震断裂带,其垂直位移可达2米,震中烈度十度。本文根据现场考察,结合历史记载勾绘了这次地震的烈度等震线,对地震的震级、震中位置、震源深度、地震矩、应力降进行了计算和讨论,并对地震的构造背景进行了初步探讨。 On June 11, 1842, a magnitude 7.5 earthquake occurred in Barkol County, Xinjiang Province, causing obvious surface deformation and producing an earthquake-rupture zone of up to 23 km in length with a vertical displacement of up to 2 meters and an epicentral intensity of ten degrees. Based on the field investigation and historical records, this paper describes the seismic intensity isoseismic line, and calculates and discusses the earthquake magnitude, epicentral position, focal depth, seismic moment and stress drop. The tectonic setting of the earthquake was also studied Preliminary discussion.