Property analysis of cosmic rays before and during the great Wenchuan earthquake
汶川大地震前后的宇宙线强度变化特性分析

Two methods are used to analyze the variations of cosmic rays fluxes of stations at Beijing, Guangzhou, Moscow, Irkutsk and Nagoya before and during the great Wenchuan earthquake on May 12, 2008. Results show that only Beijing cosmic ray data responded to the earthquake in a certain extent. The counting rate increase is 1.15% and 1.31%,respectively, while other stations data did not, which may be the base of using cosmic rays to alarm intense earthquakes.