鄂尔多斯北缘6级地震发生特征及未来趋势研究  

Study on Occurrence Characteristics and Future Trend of Earthquakes with MS ≥ 6.0 in the North Margin of Ordos

作　　者：任雪梅[1] 李文君 

机构地区：[1]宁夏回族自治区地震局,宁夏 银川

出　　处：《地球科学前沿（汉斯）》2023年第8期964-970,共7页Advances in Geosciences

摘　　要：文章结合1970年以来鄂尔多斯地块北缘的ML ≥ 4.0级地震活动的平静特征和该区域ML ≥ 4.0级地震平静打破后ML ≥ 3.0级地震分布特征,对1920年海原8 1/2级地震后鄂尔多斯地块周缘6级以上地震分布和鄂尔多斯地块北缘6级以上地震的时间分布和空间迁移等特征进行了研究,结果表明鄂尔多斯地块北缘未来有发生6级以上地震的可能性,且发生在鄂尔多斯地块北缘的西端的可能性较大。In this paper, the spatial distribution of earthquakes with MS ≥ 6.0 after Haiyuan 8 1/2 earthquake in 1920 around the Periphery of the Ordos Block and the time distribution and spatial migration of earthquakes with MS ≥ 6.0 in the Northern Margin of the Ordos Block were studied. Combined with the analysis of the quiet characteristics of earthquakes with ML ≥ 4.0 and the distribution characteristics of earthquakes with ML ≥ 3.0 after the break of the calm of earthquakes with ML ≥ 4.0 in the Northern Margin of the Ordos Block since 1970. The results show in the Northern Margin of the Ordos Block there is the possibility of an earthquake with MS ≥ 6.0 in the future. It is more likely to occur at the Western end of the Northern Margin of Ordos Block.

关 键 词：鄂尔多斯地块北缘 平静 空间迁移 指示地震 

分 类 号：P31[天文地球—固体地球物理学]