太原盆地历史地震活动特征及未来地震形势估计  

Characteristics of Earthquake Activities of Taiyuan Basin in History and Estimation of the Seismic Situation in Future

作　　者：光春云[1] 孙国学[1] 

机构地区：[1]山西省地震局

出　　处：《山西地震》1993年第1期3-8,共6页Earthquake Research in Shanxi

摘　　要：对公元1000～1985年太原盆地M≥4.0地震进行了时序分析,结果表明,它们在时间轴上和山西地震带乃至华北地区有着相似的平静—起伏变化特点,以此划出4个地震活动期和若干活动幕.指出活动幕最大地震存在逐步升级现象;在空间上重复性高,形成3个地震巢和以巢为主的地震条带与地震跳迁现象.认为在2000年前后,太原盆地将处在地震高活动时段,有可能在地震巢附近发生若干个中强地震,山西和华北地区强震活动也有可能与之同步.Time Sequence of the earthquakes (M≥4. 0) in Taiyuan Basin during the period from the year of 1000DC to 1985 is analyzed. It shows that they have similar characteristics in changing from activity to stillnessas that in Shanxi Belt, even in North china. Accordingly 4 active seismic periods and a number of activityepisodes are drawn. The authors point out that in the earthquakes the activity epsodes of which were thebiggest there existed gradually - going - up phenomenon which repeated many times spatially and thus 3earthquake nests and belts which took nests as dominant factor and earthquake leap and migratory phenomenon were formed. The authors hold that around the year of 2000 Taiyuan basin will be in active periodand probably there will be a number of moderately strong earthquakes near the seismic nests and the srismicactivities in the area of Shanxi Province and North China will probably be synchronous with them.

关 键 词：太原盆地 历史地震 时序分析 地震活动性 山西地震带 地震活动幕 

分 类 号：P315.5[天文地球—地震学]