【摘要】 对松辽盆地及其周边地区中强地震空间分布的地质构造背景进行了分析。盆地内部地震较少但强度较大（６级左右），主要发生在盆地南、北两端次级坳陷内。周边地区的地震强度相对弱些，但分布较为集中，主要沿盆地东侧依兰—伊通断裂带及西侧嫩江断裂带上的北西向雅鲁河等分支断裂分布。最后对研究区地震上述空间分布特点的原因从宏观上进行了讨论。更多还原

【Abstract】 Geological tectonic background of spatial distribution is analyzed in Songliao Basin and its peripheral region. Earthquakes are less in the basin, but its magnitude is stronger (generally M S=6.0 or so). And they occurred mainly in second class depression of north and south end of the basin. Comparatively, they are more in the peripheral region and their magnitude is little. Those earthquakes distributed mainly along Yilan Yitong fault zone in eastern of the basin and the NW-trending Yalu River fault, et al. of NNE-trending Nenjiang fault zone in the western of the basin. In the end, the article discuses the cause of the spatial distributed characteristics as the whole.更多还原