Abstract
Three numerical cases are considered for the simulation of loading responses of stratified viscoelastic earth to second degree harmonic load, uniform disc ice load, and last-glacial realistic ice load respectively. The surface displacements, geoid perturbation, relative sea level and the present-day velocities of these quantities are computed with the newly developed Coupled-Laplace-Finite-Element (CLFE) method and compared with the result of the traditional spectral method. The agreements between the results from two methods are found to be generally good. Therefore the CLFE method is proved to be correct, effective and can be applied to study the effects of lateral heterogeneity in the mantle. The new method is valuable since it is not limited to small perturbations in lateral heterogeneity
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