云南地区中小震分布的活动构造意义

Activity Tectonic Significance of Spatial Distribution of Small and Moderate Earthquakes in Yunnan Area

利用2000年1月至2010年11年间云南地震台网有定位结果的19 737个中小地震和从公元前20年至2009年11月共567次破坏地震震中,探讨云南地区地震空间分布与构造活动的关系,结果表明:地震震中密集分布地带是现今活动构造主要位置,地震震中的空间分布具有明显的活动构造意义。

Basing on 19 737 small and moderate earthquakes with the location results which was recorded by Yunnan Seismic Network （YEN） from Jun. , 2000 to Nov. , 2010, and the epicenter of 567 destructive earthquakes from 20 BC to Nov. , 2009, we discussed the relationship between spatial distribution of these earthquakes and the tectonic activity in Yunnan. The result shows that the concentrate distribution belt of the epicenter is the most important area in current active tectonic, therefore the spatial distribution of epicenters has the obvious tectonic significance.