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北天山地震带是多次发生8级大震的内陆地震带,本文研究了它的强震活动特征和地质构造的关系,将其划分出三个地震亚带,并对这三个亚带的强震活动、相关特征进行了分析对比。指出克宾—尼勒克地震亚带与乌恰—喀什地区的强震活动相关,准噶尔盆地南缘一带与阿尔泰—贝加尔地区的强震活动相关,而艾比湖地震亚带的强震活动则受南北两个方面的构造运动影响。最后从地质构造和地震活动的角度讨论了它们在地壳动力学上的意义。
The North Tianshan seismic zone is an inland seismic zone where 8 magnitude earthquakes have occurred many times. In this paper, the relationship between its strong earthquakes and its geological structure has been studied, and three seismic sub-zones have been divided. Earthquake activity, the related features were analyzed and compared. It is pointed out that the Kebin-Nilek earthquake sub-zone is related to the strong earthquakes in the Wuqia-Kashi area, that the southern margin of the Junggar Basin is related to the strong earthquakes in the Altai-Baikal region, and that the strong earthquakes in the Aibi Lake earthquake sub-zone are Affected by the tectonic movements of both North and South. Finally, we discuss their significance in crustal dynamics from the perspective of geological structure and seismicity.