中文摘要：

P波震相的自动拾取可用于地震预警中地震事件判别和地震定位,是实现基于地震台网地震预警的首要条件.针对地震预警中P波震相拾取的特点,本文发展了一套基于长短时平均（STA/LTA）和池赤准则（AIC）算法的多步骤P波自动拾取技术,应用Delaunay三角剖分提出了一种非几何相关的干扰信号剔除方法,并应用福建省数字地震台网记录对方法进行了验证,目前方法已经用到了福建省地震预警试验系统中.

英文摘要：

Automatic identification of P-arrival can be used for event recognition and earthquake location,and it is the prerequisite for regional Earthquake Early Warning（EEW） system.According to the characteristics of EEW system,a set of automatic P-arrival picking method has been developed.The picking method is based on the Short-Term-Average/Long-Term-Average（STA/LTA） and Akaike Information Criterion（AIC）,and an interference signal eliminating method is based on the Delaunay triangulation of a seismic network.The method was tested on real continuous data at Fujian Digital Seismic Network off-line and on-line.