As an important segment of the North China Craton, Trans-North Orogen (TNCO) has experienced strong tectonic deformation and magmatic activities since Cenozoic is characterized by significant seismicity. To understand mechanism crustal seismic hazards, we determined thickness ( H ), Vp / Vs ratio κ ) anisotropy (the fast polarization direction φ splitting time τ beneath TNCO its adjacent areas ...