民勤位于阿拉善大沙漠的边区,周围人烟稀少,故缺乏历史地震的記載。 1954年7月31日在民勤东南約70公里的地方发生了一次強烈地震。震中位置見图1,其震級为6 3/4,相当于震中烈度为9度。在这次地震后的若于年中,相继发生了一系列震級大于4級的地震,較小的地震还更多,直到1961年还有地震陆續发生。本文是我們对民勤东側地震活动带的几点初步认识。 Minqin is located in the border area of ​​Alashan Great Desert, surrounded by sparsely populated areas, so it lacks records of historical earthquakes. On July 31, 1954, a severe earthquake occurred about 70 km southeast of Minqin. The location of the epicenter is shown in Figure 1, with a magnitude of 6 3/4, which corresponds to an epicentral intensity of 9 degrees. In the middle of this earthquake, a series of earthquakes larger than 4 were occurred in succession, with smaller earthquakes even more. It was not until 1961 that earthquakes occurred one after another. This article is a brief introduction to the seismic activity belt on the east side of Minqin.