1947年3月17日青海省达日地震发生在巴颜喀拉山北缘山区,震中烈度为10度,等震线长轴方向为北50°西,地震形变带长150公里,由一系列的陡坎、鼓包、凹槽和裂缝组成。从形变带的性质及其组合规律分析,震区主压应力方向为北东东—南西西。地震形变现象与挽近时期活动的北50°西的日查-克授滩断裂和北北西向断裂带的展布相一致。因此推断,此次地震是日查-克授滩断裂和北北西向断裂带现今继承性活动的结果。 On March 17, 1947, the Dari Earthquake in Qinghai Province occurred in the mountainous area of ​​the northern margin of the Bayan Kara Mountain. The epicenter intensity was 10 degrees and the long axis of the isoseismic line was 50 ° northwest. The earthquake deformation zone was 150 km long and consisted of a series of Scarps, drum kits, grooves and cracks. From the analysis of the nature of the deformation zone and its combination law, the direction of the principal compressive stress in the earthquake zone is north east east to south west west. The deformation of the earthquake is consistent with the distribution of the Rizhao-Kehaotan fault and the NW-Westerly fault zone in the north 50 ° west of the active NWT movement. Therefore, it is inferred that the earthquake is the result of the current succession activities of the Riqicha-Kechitan fault and the north-northwest fault.