ON CRUSTAL DEFORMATION-STRAIN CHARACTERISTICS OF CENTRAL REGION OF WEIHE BASIN
Qu Wei 1,2) ; Wang Qinliang 3) ; Zhang Qin 1,2) ; and Zhang Min 1,2)
1)College of Geology Engineering and Geomatics, Chang’an Uiversity，Xi’an 710054;2)Key Laboratory of Western China’s Mineral Resources and Geological Engineering,Ministry of Education, Xi’an 710054;3)Second Monitoring and Application Center，CEA，Xi’an 710054
Abstract：On the basis of the “digital seismic network engineering” GPS monitoring results, and combined with regional tectonic features, the 2D finite element model of the Weihe basin central region is built. According to the above, the present crustal deformationstrain distribution characteristics of the studied area are obtained. The results show that the Xi’anXianyang area is of significantly high value of the surface expansion and mainly tensile strain within the area, the value respectively reaches more than 2.0×10 -6 /a and 3.5×10 -6 /a. Thus the present crustal tensile tectonic activity of Xi’anXianyang area is strong.
