摘要
吉林省境内1976年以来仪器记录到的所有地震一般为ML1.0~4.3小震,在这些小震中约1/9的地震有感,ML≥2.5小震约1/3有感,ML≥3.5级地震全部有感。有感小震主要分布在吉林省中部和南部,与吉林省现今中小震空间分布有大致相同的格架,与发震构造密切相关。绝大多数地震听到了地声,震级小烈度值偏大,有感小震在极震区造成一定的震害。
Magnitude values of all earthquakes shown by the instrument recording over the whole Jilin province since 1976 usually are ML:10~43In these small earthquakes,about 1/9 of them are detectable,about 1/3 of the events of ML≥25 are detectable,and all those earthquakes of ML≥35 are detectableThese detectable small earthquakes mainly distribute over the southern and central Jilin,its characteristic is similar to the current spatial distribution characteniseic of middle and small earthquakes,and closely correlates to the developing tectonismMost earthquakes give off earthquake soundsIts magnitude is small and its intensity tends to be greatThe detectabel small earthquakes can lend to certain earthquake damages in the epicentral area
出处
《东北地震研究》
1997年第4期15-21,共7页
Seismological Research of Northeast China
关键词
震害
地震烈度
地震活动性
有感地震
:Detectable small earthquakes
Itensity
Earthquake damages