The maximum principal stress and shear in depth 15 km of earth crust in Fenwei basin are computed by using GPS data observed from 2004-2007. The computed results show the following situatuins. 1 ) The distribution of maximum principal stress variation are not uniform that the principal stress increased in mountain area and decreased in basin area. 2)The shear decreased in Baoji-Xianyang and increased in Tangyu-Pucheng.%利用2004-2007年观测的GPS数据,采用格林函数法对汾渭盆地地壳15 km深处的最大主应力和剪应力进行了计算.结果表明:1)汾渭盆地的应力场变化分布具有高度不均匀性,山区和盆地的应力场变化性质相反:山区应力场以增加为主,盆地应力场以减小为主;2)宝鸡至咸阳一带的剪应力变化与汤浴至蒲城一带的剪应力变化存在相反的性质.
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