利用接收函数，研究陕西及周边地区的地壳厚度和波速比，建立对陕西地区区域地壳模型的初步认识，可为后续利用层析成像构建P波和S波高精度三维速度模型等工作提供初始约束。

Westudy the crustal thicknesses and velocity ratios in Shaanxiprovince and its surrounding areas using receiver functions, and obtain primary understanding of the regional crustal model in Shaanxi province, which can provide primary constraints for further study of high resolution 3-D P wave and S wave velocity model from tomography.