Abstract：In this paper, we process relatively dense GPS data from continuous and campaign stations spanning over 7 years ofter the 2008 Wenchuan earthquake in the Songpan-Ganzi terrane and explore a series of viscoelastic relaxation models using the PSGRN/PSCMP program. We examined the existence of the proposed lower crust flow under the eastern Tibetan plateau. Our results show that the best-fitting steady-state viscosity of the thin low velocity zone is approximately 2.51×1018 Pa·s, while the Maxwell viscosity of the middle-lower crust beneath the Plateau is around 3.98×1018 Pa·s.
HE Kefeng,ZHAO Bin,DU Ruilin. Post-Seismic Deformation Associated with the 2008 Wenchuan Earthquake by Long-Term GPS Data[J]. jgg, 2019, 39(2): 122-126.
