摘要
中国南北地震带是最近提出的概念,有许多问题需要讨论。本文试图从该带发生的地震的时间、空间和强度分布的角度,叙述该地震带的范围及其地震活动性的特征。我们看到此带基本上沿东经104°线从北向南延伸,北纬33°处被分为南北两段。强地震似乎从1700年以来,正从北段向南迁移,表明两段可能是连接的。这一点,从近代该带上发生的地震的震源机制解也有一些证据。
The North-South Seismic Zone of China has been proposed only recently.There are many questions regarding this zone which need to be discussed.In this paper we try to describe the limits of this zone,and to show certain aspects of its activity from the point of view of the time,space and magnitude distributions of historical and contemporary earthquakes occured in this zone.We find that this zone extends nearly along the meridian 104°E,all the way from North to South;it is divided into two sections at about the latitude 33°N.It seems that the locations of epicenters of large earthquakes have been migrating from the north toward the south section,since 1700 A.D.indicating possibly the two sec-tions of the zone can be connected as one.This point may be further evidenced by the unison of focal mechanism solutions of recent earthquakes occurring in this zone.
作者
王振声
王周元
顾仅萍
熊晓易
WANG ZHEN-SHENG;WANG ZHOU-YUAN;GU JIN-PING;XIONG XIAO-YI(The Seismological Brigade of Lanchou,National Seismological Bureau)
出处
《地球物理学报》
1976年第2期110-117,共8页
Chinese Journal of Geophysics
