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一、前言根据历史记载,甘肃省及宁夏回族自治区都是地震非常活动的地区,世界有名的大地震之一——1920年海原地震就发生于宁夏境内.这次地震死亡的人口总计达20多万,所遭受的损失更是不计其数.此外1927年古浪地震、1932年昌马地震、1954年山丹地震等,都是破坏性很大的近代地震.地震破坏如此严重,活动如此频繁,可惜解放前对地震研究工作很不重视,有关地震研究的文章非常少,因此到目前为止,我们对这里的地震活动的规律性认识还是不够清楚的.
I. Preface According to historical records, both Gansu and Ningxia Hui Autonomous Region are areas where earthquakes are very active. One of the world famous earthquakes occurred in Ningxia in 1920. The total number of deaths from the earthquake amounted to more than 20 In addition, the Gulang earthquake in 1927, the Changma earthquake in 1932 and the Shandan earthquake in 1954 were all highly devastating modern earthquakes, so the earthquake damage was so severe and the activities were so frequent It is a pity that before the liberation, great attention was paid to the research on earthquakes. There are very few articles on earthquake research, so far, we have not got a clear understanding of the regularity of earthquakes here.