Abstract Based on computation of grey relation degree，using observation data of mobile crossfault deformation up to May 2013，new synthetic norms for striketensilevertical activity parameters
of Xianshuihe，Longmenshan and Anninghe fractures，within radius of 300 km from the Lushan earthquake，are given，in order to search for the possible middleshortterm abnormities and timespace features，analyze coseismic deformation or influence.The results show that，1）About a few months to one year before the Lushan earthquake，at the region within radius of 300 km from the epicenter，there existed fault deformation abnormities to some degree，mainly located at the Xianshuihe fracture，Baoxing site of the southern segment of Longmenshan fracture and the vicinity of the southern end of Anninghe fracture； The obvious and concentrate turning deformation possibly had shortterm prediction meaning.2）Baoxing site only 26 km away from the epicenter displayed obvious coseismic thrust deformation； Totally the influence from this earthquake to other sites was weaker； Recently continued turning and jumping abnormities of this study area also possibly reflected the relationship with future strong earthquakes to some degree.
Zhang Xi,Tang Hongtao,Li Ruisha et al. MIDDLE-SHORTTERM ABNORMITIES OF FAULT DEFORMATION
BEFORE LUSHAN EARTHQUAKE AND ITS CO-SEISMIC INFLUENCE[J]. jgg, 2014, 34(2): 1-5.
Zhang Xi,Tang Hongtao,Li Ruisha et al. MIDDLE-SHORTTERM ABNORMITIES OF FAULT DEFORMATION
BEFORE LUSHAN EARTHQUAKE AND ITS CO-SEISMIC INFLUENCE[J]. jgg, 2014, 34(2): 1-5.
