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《Chinese Journal of Sinica》 1976-02
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A PRELIMINARY INVESTIGATION OF THE LIMITS AND CERTAIN FEATURES OF THE NORTH-SOUTH SEISMIC ZONE OF CHINA

WANG ZHEN-SHENG WANG ZHOU-YUAN Gu JIN-PING XIONG XIAO-YI (The Seismological Brigade of Lanchoa, National Seismological Bureau)  
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.
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