Abstract: The present paper elucidates the significance of relocation of earthquake hypocenters in the site region during nuclear power plant siting, basing on analysis of reliability of routinely determined hypocenter locations listed in Catalogue of Earthquakes in China and local earthquake catalogues. Several approaches by which improved hypocenter location accuracy can be obtained are also proposed, and some examples in which the seismicity pattern could been changed by relocating earthquakes are given.

Key words: Nuclear power plant, Seismicity pattern, Epicenter relocation

摘要： 通过对地震资料可靠性的分析,阐述了在核电厂厂址地震安全性评价中重新测定震源位置的必要性,提出了改善地震定位精度的途径,并且给出了通过重新定位改变地震活动图象的例证。

关键词: 核电厂, 地震活动图象, 地震重新定位