1. A method for constructing a velocity model of a subsurface of the earth, comprising: receiving seismic data acquired by one or more receivers; constructing a first velocity model of the subsurface having one or more salt bodies using the seismic data; constructing a second velocity model of the subsurface without the salt bodies using the seismic data and tomography; determining a set of attributes induced by the salt bodies based on the first velocity model and the second velocity model; calculating a stiffness tensor change between the first velocity model and the second velocity model, based on the set of attributes induced by the salt bodies; and updating the first velocity model based on the stiffness tensor change.